d b 40D Reference Sound Choice Pro Audio User Manual
- May 15, 2024
- d b
Table of Contents
- d b 40D Reference Sound Choice Pro Audio
- Product Usage Instructions
- Frequently Asked Questions
- IMPORTANT SAFETY INSTRUCTIONS
- Intended use
- Scope of supply
- Description
- Technical specifications
- Overview
- Startup
- Device configuration
- Web Remote interface
- Operation
- Service/Maintenance and care
- Manufacturer’s declarations
- Read User Manual Online (PDF format)
- Download This Manual (PDF format)
d b 40D Reference Sound Choice Pro Audio
Specifications
- Model: xD40D
- Version: 1.3
- Power Cord: Z2612.024 NEMA 5-20P (US)
- Compliance: EN 55032:2019 Class B
- Impedance: 4 ohms minimum per channel
Product Usage Instructions
1. Intended Use
The d&b 40D amplifier is designed for installation purposes and is intended to be used with applicable d&b loudspeakers. It can be used in LINEAR mode as a power amplifier for linear installations.
Note: d&b audiotechnik will not be liable for any damages to third-party loudspeakers when used with d&b amplifiers in LINEAR mode.
2. Safety Instructions
Before using the product, carefully read and follow these safety instructions:
- Keep these instructions for future reference.
- Read and heed all warnings.
- Follow all instructions provided.
- Do not connect output pins to other amplifier inputs/outputs or to the ground to avoid damage or electric shock.
- Lay cables carefully to prevent crushing or tripping hazards.
- Use the mains plug as the disconnecting device and keep it accessible.
- An experienced user should supervise equipment usage, especially by inexperienced individuals.
3. Loudspeaker Types
The maximum number of cabinets driven by each channel varies based on their nominal impedance. Refer to the respective loudspeaker manual or the d&b website for detailed information on supported loudspeakers and configurations.
The minimum recommended impedance per channel is 4 ohms.
Frequently Asked Questions
- Q: What should I do if I encounter acoustic interference or malfunctions with the amplifier?
- A: If you experience acoustic interference or malfunctions, ensure that the unit is not operated in the immediate vicinity of high-frequency transmitters such as wireless microphones or mobile phones. While damage to the device is unlikely, it is best to operate it away from such sources to avoid potential issues.
“`
xD40D Reference manual 1.3 en
Notes on document version All previous versions of this document are hereby no
longer valid. Version 1.3: 1. US power cord Z2612.024 NEMA 5-20P within
delivery as
standard added. Refer to: Þ Chapter 2 “Scope of supply” on page 6 2. Chapter
“Hardware reference” Þ Section “Power supply” revised. Refer to: Þ Chapter 8.1
“Power supply” on page 31.
General information 40D Reference manual Version: 1.3 en, 02/2024, D2039.EN
.01 Copyright © 2024 by d&b audiotechnik GmbH & Co. KG; all rights reserved.
Keep this document with the product or in a safe place so that it is available
for future reference. We recommend you to regularly check the d&b website for
the latest version of this document. When reselling this product, hand over
this document to the new owner. If you supply d&b products, please draw the
attention of your customers to this document. Enclose the relevant documents
with the systems. If you require additional documents for this purpose, you
can order them from d&b. d&b audiotechnik GmbH & Co. KG Eugen-Adolff-Str. 134,
D-71522 Backnang, Germany T +49-7191-9669-0, F +49-7191-95 00 00
docadmin@dbaudio.com, www.dbaudio.com
IMPORTANT SAFETY INSTRUCTIONS
IMPORTANT SAFETY INSTRUCTIONS
Explanation of graphical symbols
The lightning symbol within a triangle is intended to alert the user to the
presence of uninsulated “dangerous voltages” within the unit’s chassis that
may be of sufficient magnitude to constitute a risk of electric shock to
humans.
Before using this product, carefully read the applicable items of the
following safety instructions.
1. Keep these instructions for future reference. 2. Read these instructions.
3. Heed all warnings. 4. Follow all instructions. 5. WARNING! To reduce the
risk of fire or electric shock:
Do not expose this unit to rain or moisture. Keep water or other liquids
away from the unit. Do not place liquid filled containers, for example
beverages, on top of the unit. Do not operate the unit while it is wet or
standing in liquid. 6. Always operate the unit with the chassis ground wire
connected to the electrical safety earth. Do not defeat the safety purpose of
a grounding-type plug. A grounding-type plug has two blades and a third
grounding prong. The third prong is provided for your safety. If the provided
plug does not fit into your outlet, consult an electrician for replacement of
the obsolete outlet. 7. Do not use this unit if the power cord is damaged or
frayed. Protect the power cord from being walked upon or pinched, particularly
at the plugs and the point where it exits from the apparatus. 8. The unit is
intended for use in a 19″ rack. Follow the mounting instructions. When a rack
on wheels is used, exercise caution when moving the loaded rack to avoid
injury from tipping over. 9. Unplug this apparatus during lightning storms or
when unused for long periods of time.
The exclamation point within a triangle is intended to alert the user to the
presence of important operating and service instructions in the literature
accompanying the product.
10. Never connect an output pin to any other amplifier input or output pin or
to the earth (ground). This may damage the unit or lead to electric shock.
11. Lay all cables connected to the unit carefully so that they cannot be
crushed by vehicles or other equipment and that no one can either step on them
or trip over them.
12. Refer all servicing to qualified service personnel. Servicing is required
when the apparatus has been damaged in any way such as: Power-supply cord or
plug is damaged. Liquid has been spilled into the unit. An object has
fallen into the unit. The unit has been exposed to rain or moisture. The
unit does not operate normally. The unit was dropped or the chassis is
damaged. Do not remove top or bottom covers. Removal of the covers will
expose hazardous voltages. There are no user serviceable parts inside and
removal may void the warranty.
13. Use the mains plug as the disconnecting device and keep it readily
accessible. If the mains plug is not readily accessible due to mounting in a
19″ equipment cabinet, then the mains plug for the entire rack must be readily
accessible.
14. An experienced user must always supervise the equipment, especially if
inexperienced adults or minors are using the equipment.
d&b 40D Reference manual 1.3 en
d&b 40D Reference manual 1.3 en
Intended use
Intended use
The d&b 40D amplifier is designed for installation purposes and is intended to
be used with applicable d&b loudspeakers.
A “LINEAR” setup is available allowing the amplifier to be used as a linear
installation power amplifier.
Note: d&b audiotechnik will accept no liability for any damages to third-party
loudspeakers when operated with d&b amplifiers in “LINEAR” mode.
NOTICE!
The device complies with the electromagnetic compatibility requirements of EN
55032:2019 (product family standard for audio, video, audio-visual and
entertainment lighting control apparatus for professional use) for the
environment Class B (residential).
Acoustic interference and malfunctions may occur if the unit is operated in
the immediate vicinity of high-frequency transmitters (e.g. wireless
microphones, mobile phones, etc.). Damage to the device is unlikely, but
cannot be excluded.
1.1 Loudspeaker types The maximum number of cabinets driven by each channel
varies depending on their nominal impedance. It can be found in the respective
loudspeaker manual and also in the data section of each loudspeaker product
page on the d&b website at www.dbaudio.com.
The minimum recommended impedance per channel is 4 ohms.
Nom. impedance 4 8 12 16 20
Cabinets per channel 1 2 3 4 5
A list of d&b loudspeakers supported by the amplifier is included in the Release notes of the amplifier firmware. The latest version can be found on the d&b website at www.dbaudio.com.
d&b 40D Reference manual 1.3 en
5
Scope of supply
Scope of supply
Before starting up the device, please verify the shipment for completeness and
proper condition of the items. If there is any sign of obvious damage to the
unit and/or the power cord, do not operate the unit and contact your local
dealer from whom you received it.
Pos. Qty.
[1]
1
Including:
[1.1*] 1 [2]
9
d&b Code Z2830
Z2612.xxx
[3]
2
[4]
1
[5]
1
[6]
1
D2036.EN .01
Description
d&b 40D Amplifier
Power cord (specific to country*)
3-pin Phoenix Euroblock female: Intended for the INPUT/LINK/FAULT connector
sockets. Connector type: MSTB 2.5 / 3-STZ – Phoenix order code: 1776168
4-pin Phoenix Euroblock male: Intended for the SPEAKER OUTPUTS connector
sockets. Connector type: IPC 5/4-STF-7.62 – Phoenix order code: 1709173
9-pin Phoenix Euroblock female: Intended for the GPI connector socket.
Connector type: MSTB 2.59-STZ-5.08 – Phoenix order code: 1764316
5-pin Phoenix Euroblock female: Intended for the GPO connector socket.
Connector type: MSTB 2.55-STZ-5.08 – Phoenix order code: 1776142
d&b 40D Start-up manual.
Z2612.000 3-pin Schuko CEE 7/7
Z2612.010 3-pin UK BS 1363A
Z2612.024 3-pin U.S. NEMA 5-20P within delivery
Z2612.025 3-pin U.S. NEMA L6-20P optional
Z2612.035 3-pin Japan NEMA L6-20P
Z2612.040 3-pin South Korea KS C8305
Z2612.050 3-pin Australia AS 3112
Z2612.060 3-pin China GB 2099
Z2612.070 3-pin Switzerland SEV 1011
Z2612.090 3-pin Denmark Afsnit 107-2-D1
*Mains plug types and associated standards (Similar illustrations, not in scale)
Z2612.100 3-pin South Africa SANS 164-1
Z2612.110 3-pin Argentina IRAM 2073
Z2612.120 3-pin Brazil NBR 14136
Z2612.130 3-pin India IS 1293
6
d&b 40D Reference manual 1.3 en
Technical specifications
Technical specifications
Operating conditions Operating temperature (*continuous/**short-term)
10 °C … +40*/+50* °C (+14 °F … +104/+122** °F)
Storage temperature
20 °C … +70 °C (4 °F … +158 °F)
Humidity (rel.), non-condensating
< 70 %
Power supply Switched mode power supply with automatic mains range selection and active Power Factor Correction (PFC).
Mains connector
powerCON® TRUE 1 TOP
Rated mains voltage (High range)
208 – 240 V, 50 – 60 Hz
Rated mains current (High range)
13 A
Rated mains voltage (Low range)
100 – 127 V, 50 – 60 Hz
Rated mains current (Low range)
20 A
Protection circuits Mains and power supply: Overvoltage and undervoltage,
inrush current limiter, internal fuse.
Output: Overcurrent, DC offset, HF voltage limiter, pop-noise suppression.
Cooling: Temperature-dependent fan, self-resetting overtemperature protection.
Power consumption (typical values) Standby Idling Peak output
13 W 130 W 2900 W
Audio power outputs* SPEAKER OUTPUTS A/B/C/D
2 x 4-pin Phoenix Euroblock female
Maximum output voltage/current
180 Vpeak/35 Apeak
Output power rating EIA-426B noise CF 12 dB
4 x 2000 W/8
4 x 2400 W/4
Sine wave 1 kHz, long term, +40 °C (+104 °F)
4 x 250 W/4
Frequency response (1 dB, Linear mode)
35 Hz 25 kHz
Gain (Linear mode @ 0 dB)
31 dB
Output noise/Dynamic range
Output noise (BW 20 kHz)/dynamic range (BW 20 kHz, reference
180 Vpk)
Analog input
350 µVRMS/111 dB
Analog input, A-weighting
250 µVRMS/114 dB
Digital input
200 µVRMS/116 dB
Digital input, A-weighting
150 µVRMS/119 dB
THD+N / Crosstalk THD+N (unweighted, 20 20 kHz) 4 x 250 W/8 ohms 4 x 250 W/4 ohms Crosstalk (20 20 kHz)
< 86 dB/0.005 % < 83 dB/0.007 %
< 70 dBr 4 x 250 W into 8/4
Analog inputs and outputs INPUT A1 – A4
3-pin Phoenix Euroblock male
Pin assignment
( ) GND, neg., pos.
Input impedance
32 k, electronically balanced
CMRR @ 100 Hz/1 kHz / 10 kHz
80/>80/>70 dB
Maximum input level (balanced/unbalanced)
+25/+18 dBu
+27.3 dBu @ 0 dBFS
Digital inputs and outputs
INPUT – D1/2, D3/4)
3-pin Phoenix Euroblock male, AES3
Pin assignment
( ) GND, AES Signal, AES Signal
Input impedance
110 , transformer balanced
Sampling frequency
44.1 | 48 | 96 | 192 kHz
Word length
16 – 24 bit
LINK – D1/2, D3/4
3-pin Phoenix Euroblock male
Pin assignment
( ) GND, AES Signal, AES Signal
electronically balanced
Output modes
Mains on: analog signal buffering (refresh)
Mains off/power fail: bypass relay
ETHERNET 1 (PRI)/ETHERNET 2 (SEC)
Connector type
2 x RJ 45
ETHERNET 1 (PRI)
Remote control via R1, Star topology
ETHERNET 2 (SEC)
Currently disabled
IP settings (factory default)
IP address/Subnet mask
192.168.1.40/255.255.255.0
GPI/GPO/FAULT External power supply
24 VDC ±25% (18 30 VDC)/150 W
GPI
8 x Opto-coupled (galvanic isolation)
High-level
18 … 30 VDC
Low-level
0 … 9 VDC
Serial resistance
5.4 kOhms
Forward voltage drop (Uf (max.))
3.7 V
Input current draw per pin @ 9/18/24/30 VDC
1.5/2.6/3.7/4.8 mA
Connector type
1 x 9-pin Phoenix Euroblock male
Pin assignment
( ) GND, GPIs 1 8
GPO High-state Low-state Max. current draw Connector type Pin assignment
4 x Low-Side-Switch-Relay Closed (connected to common GPO GND)
Open (high resistive) 1 A/Total: 4 A
1 x 5-pin Phoenix Euroblock male ( ) GND, GPOs 1 4
FAULT
NO – Normally Open | NC – Normally Closed 1 x 3-pin Phoenix Euroblock male
d&b 40D Reference manual 1.3 en
7
Technical specifications
Digital Signal Processing System start-up time
< 21 sec.
Time to tone (Standby/ReadyStandby)
< 4/< 1 sec.
Time to tone (Off/Wake on Audio)
< 21 /< 4 sec.
Conversion
96 kHz
Latency analog/digital (AES) input
0.3/0.3 msec.
A/D conversion
27 Bit (dual-stacked A/D converters)
Internal processing
Combination of high-resolution fixed point
and floating point processing
Equalizer
two user definable 16-band equalizers
Filter types: PEQ/Notch/HiShlv/LoShlv/Asym
Delay
0.3 msec. – 10 sec.
Frequency generator
Pink noise or Sine wave 10 Hz 20 kHz
Controls and indicators RESET
TFT color touchscreen
Recessed push-button (rear panel) 4.3″/480 x 272 pixels
Fan noise emission Rack mounted, measured on axis, 1 m (3.3 ft) to front panel, A-weighting.
Min./Max. RPM
30/50 dB(A)
Ambient temperature 23 °C/73.4 °F
Dimensions and weight Height x width x depth
Weight
2 RU x 19″ x 465 mm (18.3″) 13.3 kg/29.3 lb
40D enclosure dimensions in mm [inch] 8
d&b 40D Reference manual 1.3 en
Technical specifications
*Audio power output Measurement references:
All data is valid for 23 °C (73.4 °F) ambient temperature and 230 VAC/50 Hz
mains supply. The power rating of noise signals is defined as the maximum of
the instantaneous output power divided by a factor of two.
The power of burst signals refers to the power during the “on” period.
The duration of the peak output of a sine wave signal is defined at a drop of
0.5 dB/10% relative to the maximum output power.
EIA-426B noise Crest factor 12 dB
9 dB
6 dB
1 kHz burst On/off time 20 ms/0 dB 480 ms/20 dB 200 ms/0 dB 600 ms/20 dB 1
kHz sine wave Channels used 1
4
Load 4 ohms 8 ohms 4 ohms 8 ohms 4 ohms 8 ohms
Load 4 ohms 8 ohms 4 ohms 8 ohms
Load 4 ohms 8 ohms 4 ohms 8 ohms
Power rating 4 x 2400 W 4 x 2000 W 4 x 1300 W 4 x 2000 W 4 x 700 W 4 x 1150 W
Power 4 x 1200 W 4 x 1150 W 4 x 700 W 4 x 750 W
Max. output power 1 x 2400 W 1 x 2000 W 4 x 2400 W 4 x 2000 W
Power average 4 x 300 W 4 x 250 W 4 x 325 W 4 x 500 W 4 x 375 W 4 x 575 W
Duration of max. output 110 ms 2000 ms 5 ms 4 ms
d&b 40D Reference manual 1.3 en
9
Technical specifications
Measurement references
For all noise signals, the values are measured at the maximum level just
before any amplifier limiter activity (no Gain Reduction).
Noise CF 12 dB: Noise signal according to EIA-426-B with a crest factor of 12
dB. This represents the use case of live music or less compressed recorded
music.
Noise CF 9 dB: Noise signal according to EIA-426-B with a crest factor of 9
dB. This represents the use case of music with medium compression.
3.1 Current/power draw and thermal dissipation
Noise CF 6 dB: Noise signal according to EIA-426-B with a crest factor of 6
dB. This represents the use case of heavily compressed music.
Sine wave (100 ms): 1 kHz sine wave signal, 0 dBFS input level and a duration
of 1 s. The RMS current value is calculated over a 100 ms time window. This
window is stepped in increments of 10 ms over the recording. The resulting
value is the highest current within a window of 100 ms.
230 VAC / 50 Hz / 0.5 Source impedance – all channels driven
State
Load Mains [ohms] current
[A RMS]
Power factor
Input power
[W]
Standby
–
0.26
0.22
13.5
Standby/Wake on Audio
–
0.29
0.31
20.8
ReadyStandby
–
0.43
0.54
52.6
Eco
–
0.83
0.54
103
Idling
–
0.75
0.74
127
Noise CF 12 dB
8
6.1
4
7.8
0.95
1300
0.96
1700
Noise CF 9 dB
8
11.6
0.98
2550
4
8.2
0.97
1800
Noise CF 6 dB
8
13
4
8.8
0.99
2900
0.98
1950
Sine wave max. 1 s
8
16.6
–
–
4
16.5
–
–
Output power [W] –
–
–
–
–
1000 1200
2000 1300
2300 1400
–
Power loss [W] 13.5
20.8
52.6
103
127
300 500
550 500
600 550
–
BTU/hr kCal/hr
46
12
71
18
179
45
351
89
433
109
1024
258
1706
430
1876
473
1706
430
2047
516
1876
473
–
–
–
–
208 VAC / 60 Hz / 0.5 Source impedance – all channels driven
State
Load Mains [ohms] current
[A RMS]
Power factor
Input power
[W]
Standby
–
0.28
0.20
11.9
Standby/Wake on Audio
–
0.32
0.32
20.8
ReadyStandby
–
0.46
0.53
50.2
Eco
–
0.86
0.54
97
Idling
–
0.82
0.74
126
Noise CF 12 dB
8
6.8
4
8.8
0.96
1350
0.96
1750
Noise CF 9 dB
8
13.1
0.98
2600
4
9.2
0.98
1850
Noise CF 6 dB
8
13.7
0.99
2750
4
9.9
0.98
2000
Sine wave max. 1 s
8
18.4
–
–
4
18.4
–
–
Output power [W] –
–
–
–
–
1000 1200
2000 1300
2100 1400
–
Power loss [W] 11.9
20.8
50.2
97
126
350 550
600 550
650 600
–
BTU/hr kCal/hr
41
10
71
18
171
43
331
83
430
108
1194
301
1876
473
2047
516
1876
473
2218
559
2047
516
–
–
–
–
10
d&b 40D Reference manual 1.3 en
Technical specifications
120 VAC / 60 Hz / 0.2 Source impedance – all channels driven
State
Load Mains [ohms] current
[A RMS]
Power factor
Input power
[W]
Standby
–
0.23
0.41
11.4
Standby/Wake on Audio
–
0.32
0.50
18.8
ReadyStandby
–
0.60
0.72
52.0
Eco
–
1.44
0.60
104
Idling
–
1.26
0.86
130
Noise CF 12 dB
8
12.1
0.96
1350
4
15.9
0.96
1800
Noise CF 9 dB
8
18.8
0.98
2100
4
16.6
0.98
1900
Noise CF 6 dB
8
19.7
0.99
2250
4
17.7
0.98
2000
Sine wave max. 1 s
8
25.2
–
–
4
27.7
–
–
Output power [W] –
–
–
–
–
1000 1200
1600 1300
1650 1400
–
Power loss [W] 11.4
18.8
52.0
104
130
350 600
500 600
600 600
–
BTU/hr
39 64 177 355 444 1194 2047 1706 2047 2047 2047 –
kCal/hr
10 16 45 89 112 301 516 430 516 516 516 –
100 VAC / 60 Hz / 0.2 Source impedance – all channels driven
State
Load Mains [ohms] current
[A RMS]
Power factor
Input power
[W]
Standby
–
0.21
0.49
10.3
Standby/Wake on Audio
–
0.34
0.55
18.7
ReadyStandby
–
0.65
0.75
48.2
Eco
–
1.54
0.61
94.8
Idling
–
1.45
0.88
128
Noise CF 12 dB
8
14.9
0.97
1400
4
19.9
0.96
1850
Noise CF 9 dB
8
21.2
0.98
2000
4
20.8
0.98
1950
Noise CF 6 dB
8
21.0
0.99
2000
4
21.1
0.99
2000
Sine wave max. 1 s
8
30.3
–
–
4
32.7
–
–
Output power [W] –
–
–
–
–
1000 1200
1450 1300
1450 1350
–
Power loss [W] 10.3
18.7
48.2
94.8
128
400 650
550 650
550 650
–
BTU/hr
35 64 164 323 437 1365 2218 1876 2218 1876 2218 –
kCal/hr
9 16 41 82 110 344 559 473 559 473 559 –
d&b 40D Reference manual 1.3 en
11
Overview
4.1 Connections
Overview
[1] Mains connector socket.
Refer to Þ Chapter 5.2.1 “Mains connection” on page 14. [3] Output connectors.
[2] Audio INPUT (analog/digital) and
Refer to Þ Chapter 5.2.3 “SPEAKER
LINK connectors.
OUTPUTS” on page 16.
Refer to Þ Chapter 5.2.2 “Audio
input and output connectors”
on page 15.
[4] ETHERNET.
Refer to Þ Chapter 5.2.4 “ETHERNET (Dual Ethernet port)” on page 17. [5] GPI
/GPO connector.
[6] Refer to Þ Chapter 5.2.5 “GPI/GPO (Hardware description)” on page 18. [7]
FAULT connector.
Refer to Þ Chapter 5.2.6 “FAULT” on page 18.
4.2 Controls and indicators – User interface
[9] User interface / Status indicators Refer to [8] RESET
Refer to Þ Chapter 5.3.1 “RESET (System reset)” on page 19
12
d&b 40D Reference manual 1.3 en
Startup
Startup
5.1 Rack mounting and cooling
Rack mounting The enclosure is designed to fit standard 19″ equipment racks or
cabinets.
NOTICE!
When mounting the device into 19″ equipment racks or cabinets, it is strongly
recommended that you: Always fix the device at its front AND rear-mounted
rack ears using appropriate rack mounting screws and U washers, as shown in
the graphic opposite. Alternatively use shelves fixed to the inner sides of
the equipment rack or cabinet.
Cooling Thermal conditions are a vital factor to ensure operational safety of
the power amplifiers. The amplifiers are equipped with two internal fans that
draw cool air from the front into the housing and channel the warm air towards
the back of the device. Please ensure that adequate cool airflow is provided.
Do not block or cover the front panel air intake or the vents on
the rear panel. If the amplifiers are installed in sealed cabinets (e.g. in
fixed
installations), use additional fan modules with filters that can be easily
replaced without opening the sealed cabinets. Do not combine the amplifiers
with D6 or D12 amplifiers in one rack. Do not rack up the amplifiers together
with other devices producing additional heat with opposing airflow.
d&b 40D Reference manual 1.3 en
13
5.2 Connections
Startup
5.2.1 Mains connection
WARNING! Potential risk of electric shock or fire.
The device is a protective class 1 unit. A missing earth (ground) contact may
cause dangerous voltages in the housing and controls and may lead to electric
shock. Connect the device to mains power supplies with protective
earth only. If there is any sign of obvious damage to the power cord
and/or mains plug, do not use the power cord and replace it before further
use. Please ensure the mains connector is accessible at any time to disconnect
the device in case of malfunction or danger. If the mains plug is not readily
accessible due to mounting in a 19″ rack or equipment cabinet, then the mains
plug for the entire rack or cabinet must be readily accessible. Do not connect
or disconnect the mains plug under load.
Before connecting the device to mains voltage, check that the mains voltage
and frequency correspond to the specifications on the rating label next to the
mains connector socket on the rear panel of the unit.
Mains voltage range: 100 to 240 VAC, ~50/60 Hz, 1800 W.
A powerCON® TRUE 1 TOP mains connector socket [1] is fitted on the rear panel
and an appropriate power cord [1.1] is supplied.
14
d&b 40D Reference manual 1.3 en
Startup
5.2.2 Audio input and output connectors The rear panel features eight
installation specific Phoenix Euroblock connectors with the following
assignments:
four analog inputs (A1 – A4) two digital AES3 inputs (D1/2 and D3/4 – four
channels) with
corresponding LINK outputs.
Each input channel can be routed to any of the output channels A to D Þ Input routing.
Analog INPUT (A1 – A4)
A 3-pin Phoenix Euroblock connector (male) is provided for each analog input
to accept the supplied 3-pin Phoenix Euroblock connector (female). To feed
(link) the input signal on to the next device in the signal chain, the
connector can also be used as a cable tap.
Specifications Pin assignment
( ) GND, neg., pos.
Input impedance
32 kOhms, electronically balanced
CMRR @ 100 Hz/1 kHz/10 kHz
80/>80/>70 dB
Maximum input level (balanced/unbalanced)
+25/+18 dBu
+27.3 dBu @ 0 dBFS
Digital INPUT and LINK (D1/2 – D3/4)
A 3-pin Phoenix Euroblock connector (male) is provided for each pair of
digital inputs to accept the supplied 3-pin Phoenix Euroblock connector
(female).
The corresponding digital LINK output (1/2, 3/4) can be used to feed a refreshed input signal to the next device in the signal chain. The signal shape (the rising and falling edges of the signal) and level are refreshed with an analog buffer amplifier.
A power fail relay is incorporated to prevent interruption of the signal chain should there be a power failure. In this situation, the digital input signal bypasses the analog buffer amplifier and is routed directly to the LINK output.
Specifications Pin assignment
( ) GND, AES Signal, AES Signal
Input impedance
110 ohms, transformer balanced
Sampling frequency
44.1 | 48 | 96 | 192 kHz
Word length
16 – 24 bit
Digital LINK (D1/2, D3/4)
3-pin Phoenix Euroblock male
electronically balanced
analog signal buffering (refresh), power fail relay (Bypass)
d&b 40D Reference manual 1.3 en
15
Startup
5.2.3 SPEAKER OUTPUTS
WARNING! Potential risk of electric shock or fire.
Risk of electric shock The amplifier output pins can carry dangerous voltages.
Only use isolated loudspeaker cables with correctly fitted
connectors. Never connect an amplifier output pin to any other input or
output connector pin or protective earth (ground). Bridge mode is not
applicable. Risk of fire To avoid any heating of the output connector terminal
(glowing contact), the wires need to be properly fitted to the output
connector terminal. Only use the enclosed Phoenix Euroblock connector
terminals
[3]. Observe the maximum cross-section of 6 mm2 (AWG 10). Ensure all contact
screws are properly tightened.
Recommended torque settings (min/max): 0.7/0.8 N×m. Ensure the fixing screws
of the connector terminal are properly
fitted to the output connector socket of the device.
The amplifier is equipped with two Phoenix Euroblock connector sockets
(female), one for each pair of amplifier output channels (A/B, C/D).
All pins of both output connectors are hardwired and permanently driven using
the following pin assignment.
SPEAKER OUTPUTS A (B, C, D) + = Amp A (B, C, D) pos. — = Amp A (B, C, D) neg.
16
d&b 40D Reference manual 1.3 en
Star topology
Startup
5.2.4 ETHERNET (Dual Ethernet port)
NOTICE! Only shielded network cables (STP) must be used!
The device allows standard remote control via the d&b Remote network using the
d&b R1 Remote control software or the integrated Web remote interface. For
this purpose, use the upper RJ45 (ETHERNET 1/PRI) connector socket (1
Gbit/s/100 Mbit/s peer-to-peer) requiring star topology network wiring.
Daisy-chaining is not supported.
Note: The bottom RJ45 connector socket (ETHERNET 2/SEC) is not enabled but is
reserved for future feature implementations.
LED indicators
The two LED indicators above the respective connector in use indicate the
following states:
Green Yellow
Illuminates permanently when the device is connected to an active network and
flashes as long as a data stream is transmitted.
Is off when the speed is 100 Mbit/s. Illuminates permanently when the speed is
1 Gbit/s.
d&b 40D Reference manual 1.3 en
17
GPI | GPO Schematic circuit diagrams and logic level chart (GPI)
FAULT Schematic circuit diagram and switching status: a) Device is On and
operating b) Device is Off or general device error
18
Startup
5.2.5 GPI/GPO (Hardware description) Up to eight opto-coupled GPI pins [5]
(General Purpose Input) and up to four GPO pins [6] (General Purpose Output)
are available as additional digital control lines. This enables external
control and detection functions.
Note: A detailed description of how to configure the GPIOs and assign the
available software objects (functions) correspondingly is given in Þ Chapter
6.2 “GPIO Configuration” on page 25.
Each GPI provides either level (Hi/Lo active – non-latching) or edge
(rising/falling – latching) triggering.
Note: When using a GPI or GPO contact, observe the following:
An external DC power supply is required. GPI: The corresponding pin is
connected via an opto-
coupler with a serial resistance of 5.4 k. GPO: The corresponding pin is
connected to ground
(GND/ ) via a relay (Low-Side-Switch). Make sure the current per GPO pin does
not exceed 1 A.
Technical specifications
External power supply
24 VDC ±25% (18 30 VDC)/150 W
GPI
8 x Opto-coupled (galvanic isolation)
High-level
18 … 30 VDC
Low-level
0 … 9 VDC
Serial resistance
5.4 kOhms
Forward voltage drop (Uf (max.))
3.7 V
Input current draw per pin @ 9/18/24/30 VDC
1.5/2.6/3.7/4.8 mA
Connector type
1 x 9-pin Phoenix Euroblock male
Pin assignment
( ) GND, GPIs 1 8
GPO High-state Low-state Max. current draw Connector type Pin assignment
4 x Low-Side-Switch-Relay Closed (connected to common GPO GND)
Open (high resistive) 1 A/Total: 4 A
1 x 5-pin Phoenix Euroblock male ( ) GND, GPOs 1 4
5.2.6 FAULT An additional 3-pin Phoenix Euroblock fault contact [7] is
provided allowing a general device error to be remotely indicated.
Note:
The assignment of the corresponding software object is fixed and cannot be
changed by the user.
During a firmware update, the fault contact switches to status b), as shown in
the graphic opposite.
NO Normally Open
C
Common
NC Normally Closed
d&b 40D Reference manual 1.3 en
d&b 40D Reference manual 1.3 en
5.3 Controls and indicators
Startup
5.3.1 RESET (System reset) A reset button (RESET [8]) is located on the rear
panel next to the digital LINK D3/D4 connector terminal. To prevent accidental
system reset, the button is slightly recessed. To perform a system reset,
proceed as follows:
Note: All device preferences will be set to factory defaults except for the
network and fixed device settings.
1. Isolate the device from mains power by releasing the powerCON connector
and turn it counterclockwise.
2. Press and hold the «RESET» button using an appropriate pen. 3. While
holding the «RESET» button pressed, repower the
device by turning the powerCON connector clockwise. Long confirmation beep. 4.
Release the «RESET» button and briefly press the button again within 2 sec.
Short confirmation beep Þ the device will reboot.
5.3.1.1 Network reset option (IP settings) Executing the following reset
procedure allows you to locally change/edit the network (IP) settings, if
required. Once the settings have been changed and the device has been shut
down, the access to the network settings will be disabled again after
repowering the device. 1. During normal operation, press and hold the «RESET»
button
for 5 sec. Long confirmation beep. 2. Release the «RESET» button and briefly
press the button again within 2 sec. Short confirmation beep.
The network settings will become accessible for editing by tapping the
«Network» navigation button as shown in the graphic opposite.
19
Screen access and structure chart
Startup
5.3.2 TFT color touchscreen – User interface
NOTICE!
The touch panel utilizes a thin flexible sheet that may be damaged by sharp
objects or heavy treatment.
The user interface consists of a 4.3″ TFT color touchscreen [9] with a
resolution of 480 x 272 pixels. The resistive touchscreen responds to pressure
and therefore can be operated by a fingertip, even when wearing gloves or by
an appropriate stylus tip (pen).
Screen contents The display provides comprehensive information regarding the
channel settings/statuses as well as the device settings/statuses. The
structure of the screen content(s) is divided into two main axes, the «Home»
view, including the «Channel» settings/statuses, and the «Device»
settings/statuses views. Accessing the screen contents Þ To access a
particular subscreen, simply tap ( ) the
corresponding screen item, shown as an example in the graphic below.
5.4 Screen contents
5.4.1 Home From the Home screen, the screen structure is divided into two main
sections (axes), the Header and Data (Channel strip) sections.
The navigation buttons allow for vertical access to the subscreens while the
tab structure on the right side of each subscreen provides a clear horizontal
order.
In addition, the header gives direct access to the Network subscreen.
The Home screen can be accessed from any subscreen at any level using the Home
button ( ).
Header The header section features the most vital device status information.
This includes (from left to right):
20
d&b 40D Reference manual 1.3 en
d&b 40D Reference manual 1.3 en
Startup
1. Power-on indicator
Yellow: Indicates the start-up phase of the power supply.
Green: Indicates that the device is switched on.
Grey: Indicates that the device is in standby mode.
Red:
Indicates a device error.
2. Device name and output mode settings
This navigation button provides direct access to the Þ Input subscreen.
3. Network settings and status
This navigation button provides direct access to the Þ Network subscreen.
OCA IP:
Green: The device is connected to the d&b Remote network and R1 is in «Online»
mode.
Black: The device is not connected to the d&b Remote network or R1 is offline.
IP adress.
ID: Remote ID.
In addition, the network speed is indicated by dedicated LEDs with the following color code:
Green 1 Gbit/s network. Yellow 10/100 Mbit/s network.
Grey No link up.
4. Additional information field regarding the power on status of the device.
Data – Channel strips The data section features the actual channel strips
starting with the input connector and then following the real signal flow from
left to right. All vital information is displayed. This includes:
1. Input signal present (ISP).
2. Channel configuration and signal status (ISP/GR/OVL).
3. Channel mute status.
4. Error messages.
5.4.2 Input The data section of the Input subscreen provides the following
information:
1. The Fallback and Override settings.
2. Input metering for both the digital (AES (D)) and analog (Analog (A))
inputs.
3. Underneath the meter bars the input monitoring (IM) status is indicated by
a dedicated LED with the following color code: Grey IM not activated Blue IM
activated Red IM fault
A corresponding error message will be issued in the header of the Home screen
and in addition, the affected channel is indicated within the ISP indicators
on the left of the data area.
21
Startup
5.4.3 Output The data section of the Output subscreen provides the following
information:
Note: The values indicated in the graphic opposite do not correspond to real-
world conditions.
1st line Speaker Input Output GR/ Headrm.
Impedance Power Temperature ISP/OSP
GR/OVL
Mains/SMPS
Mute status of each channel.
Loudspeaker setups selected for the individual channels.
Actual input signal levels of the individual channels.
Actual output voltages of the individual amplifier channels.
Relationship between headroom (Headrm.) and gain reduction (GR) with peak hold for 1 sec.
Display ranges:
GR:
0 dB Þ +32 dB.
Headrm.: 32 dB Þ 0 dB.
Actual load impedance values for the individual amplifier channels.
Power actually delivered by the individual amplifier channels.
Actual temperatures of the individual amplifier channels.
Indicates whether the input signal (ISP) as well as the amplifier output signal (OSP) of the individual channel are present.
Indicates whether gain reduction (GR Yellow) of the respective channel is active or the respective channel is overloaded (OVL Red).
Displays the actual mains voltage and frequency followed by the actual power
consumption of the power supply.
In addition the actual temperature of the power supply is indicated.
5.4.4 Network
The data section of the Network subscreen provides the following information:
Mode: IP: IP mask: IP gateway: MAC:
Status: Remote ID
Actual IP mode. Actual IP settings.
Displays the fixed MAC address of the device. Provides status information on
the network. Unique Remote identifier of the respective device in the format
[nn].[nn]. The first two digits represent the Subnet. Within the network up to
100 subnets can be defined (values 0 to 99).
22
d&b 40D Reference manual 1.3 en
Startup
The following two digit represents the Device ID for each subnet (values 1 to 63).
In addition the network speed is indicated by dedicated LEDs with the following color code:
Green Yellow Grey
1 Gbit/s network. 10/100 Mbit/s network. No link up.
5.4.5 More
In the More subscreen, additional information is provided via further
navigation buttons (subscreens) and information fields.
In addition, the current firmware version («Firmware CO») and the «Serial
number» of the devices are indicated at the bottom of the screen.
5.4.5.1 GPIO The data section of the GPIO subscreen provides a general
overview of the assigned functions and the actual statuses of both the GPI and
the GPO contacts at one glance.
In addition, a more detailed view is provided on separate tabs for either the
GPI or the GPO configurations (Mode/Function) and their current states.
Status Three status LEDs are provided indicating the following states:
1. The first LED indicates the status of the GPIOs.
For GPIs the logical status and for GPOs the status of the relay ( ).
2. The second LED indicates the status of the related Object (binary object)
or AmpPreset ( ).
3. The third LED illuminates as soon as an error has occurred ( ).
d&b 40D Reference manual 1.3 en
23
Startup
5.4.5.2 Event log The event log stores a maximum of 10000 records. Once the
maximum number of records is reached, the system starts deleting the first
ones.
5.4.5.3 AmpPresets The number of the currently active AmpPresest is shown.
24
d&b 40D Reference manual 1.3 en
Device configuration
Device configuration
6.1 Initial device setup The device is mainly intended to be set up and
operated via the d&b Remote network using the d&b R1 Remote control software.
Provided R1 is already installed and the device has been connected either
directly or through the network, proceed as follows:
Þ From the startup menu, choose the «R1 V3 Initial device setup» entry. R1 is
launched and automatically switches to «Online» mode and the «Service» view is
displayed. In the left pane of the view, the connected device is listed. In
the right pane, the corresponding «Filter» Þ «Initial device setup» is set by
default and provides you with basic parameters (in alphabetical order) to set
up the device.
6.2 GPIO Configuration 1. To configure the GPIOs, switch R1 to «Configuration»
mode. 2. From the «System views» select «Service».
R1 enters the «Service» view with the «Interfaces» tab being active.
3. Select the «Devices» tab. In the right pane of the «Service» view the
«Properties» tab becomes accessible
4. From the «Filter» drop-down list select «GPIOs» or «Initial device setup»
The table will become accessible indicating the GPI/GPO states and providing
the related parameter function and mode.
d&b 40D Reference manual 1.3 en
25
GPI function
Display only Mainly intended as Debug function. Displays the status of the
respective GPIO without any assignment to Objects or Presets.
Power on Channel mute (Mute Ch A … Mute Ch D, Mute all) AmpPreset 1 … 15 Alarm
preset 1 … 3 Backup 1 … 3 Input Fallback/Input Override
GPO function
Mains Voltage OK Power OK
Indicates when the power amplifier stage has reached its full rail voltage and
the device is ready for operation (Þ not Standby). Channel error Ch A Error …
Ch D Error, Error Ch any (cumulative output) Channel protection Ch A
Protection … Ch D Protection, Protection Ch any (cumulative output) Internal
Error Indicates an internal error of the device which causes an interruption
of the audio signal. Explicitly excluded are “Load monitoring, System check
and Overvoltage or Undervoltage” conditions/states. Channel mute (Mute Ch A …
Mute Ch D, Mute any, Mute all)
Device configuration
Within the «GPIOs» table, the parameter are listed for either GPIs and GPOs.
GPI state GPO state
GPI internal state GPO internal state GPI function GPO function GPI mode GPO
mode
The GPIO state corresponds to the voltage applied in relation to the selected
GPI mode. The GPIO internal state depends on the selected GPI/O function.
Assigns the corresponding function (Object). Trigger/switching behavior of the
corresponding GPI/GPO contact. It can be combined with either level (non-
latching) or edge (latching) triggering, as detailed below.
GPI mode Off: The corresponding GPI contact is disabled. Input, level, lo: Level triggered – Lo active Input, level, hi: Level triggered – Hi active Input, edge, rising: Edge triggered – rising Input, edge, falling: Edge triggered – falling –
GPO mode Off: The corresponding GPO contact is disabled.
Output, level, NO: Level triggered – normally open (NO)
Output, level, NC: Level triggered – normally closed (NC)
GPO manual control: Manual operation (hand control). Mainly intended for test
purposes.
26
d&b 40D Reference manual 1.3 en
Device configuration
Status Three status LEDs are provided indicating the following states:
The first LED indicates the status of the GPIOs.
For GPIs the logical status and for GPOs the status of the relay.
For outputs, the logical status is “1” ( ) when the relay is closed.
For edge triggered inputs, the internal Object/AmpPreset states are the same
as the GPI status and vice versa.
For outputs in “NO” mode (normally open), the statuses of the Object and GPO
are the same. In “NC” mode (normally closed), the status of the GPO is
inverted.
For level triggered inputs, the GPI status is defined by the external voltage
applied. However, the triggered Object/AmpPreset can be changed for whatever
reason, i.e. an AmpPreset was modified or an AmpPreset, which is defined for a
dedicated GPI is loaded.
The second LED indicates the status of the related Object (binary object) or
AmpPreset.
Objects/AmpPresets and GPIs are evaluated separately.
For Objects, the logical status is “1” ( ) when the Object is logical “1”
(binary object).
For AmpPresets, the logical status is “1” ( ) when the AmpPreset is loaded and
not modified.
The third LED illuminates as soon as an error has occurred ( ).
Provided the corresponding GPI/GPO is selected, a corresponding message will
be issued on the bottom left of the GPIO screen.
Recommended and tested browsers:
Windows:
Firefox V22.0 or higher Microsoft Internet Explorer V11 or higher Microsoft Edge V12 or higher Google Chrome V21 or higher Opera V15 or higher
macOS:
Safari V6.0 or higher Firefox V22.0 or higher Google Chrome V21 or higher Opera V15 or higher
iOS:
iOS 6 or higher
Android:
Mobile Firefox V27.0 or higher Android Browser V4.4 or higher
6.3 Web Remote interface Alternatively, the integrated Web Remote interface
also provides direct access to the user interface using a standard web
browser. The Web Remote interface is mainly intended for configuring a single
device.
Note: A detailed description of the Web Remote interface is given in Þ Chapter
7 “Web Remote interface” on page 28.
Physical setup and direct connection Simply connect the LAN connector port of
your computer to the upper RJ45 (ETHERNET 1/PRI) connector socket [4] of the
device. By factory default, the IP address is set to: 192.168.1.40. To access
the device, manually assign an IP address to the computer in your network in
the same subnet as the device. 1. Navigate to the network settings of your
computer associated
with your network adapter. 2. Open the corresponding network properties
dialog. 3. Enter a static IP address (e.g. 192.168.1.11) in the same
subnet (255.255.255.0) as the device. 4. Confirm the changes and close the
network properties dialog. 5. To display the Web Remote interface page of the
device,
enter its IP address (192.168.1.40) in the address bar of your web browser.
d&b 40D Reference manual 1.3 en
27
Web Remote interface
Web Remote interface
In addition, a Web Remote interface is integrated which provides direct access
to the user interface of a single amplifier using a standard web browser.
Note: The user interface of the amplifier can only be accessed after
connecting the amplifier to a computer via Ethernet. It is possible to connect
the computer and the amplifier directly, however, this requires the IP mode
DHCP+LL.
The use of a router with DHCP server is recommended for setting up the network
connection. If the router also provides a wireless access point, the amplifier
may also be controlled using mobile devices.
Recommended and tested browsers:
Windows:
Firefox V22.0 or higher Microsoft Internet Explorer V11 or higher Microsoft Edge V12 or higher Google Chrome V21 or higher Opera V15 or higher
macOS:
Safari V6.0 or higher Firefox V22.0 or higher Google Chrome V21 or higher Opera V15 or higher
iOS:
iOS 6 or higher
Android:
Mobile Firefox V27.0 or higher Android Browser V4.4 or higher
Remote control
To enable remote control via the Web Remote interface, proceed as follows:
1. Establish a connection between the network connector of the amplifier and
the router.
After a while, the «Remote» tab of the amplifier screen will display the IP
address the DHCP server has assigned to the device.
2. Type this address into the address field of the browser or the mobile
device that is connected to the network.
In this case: 10.5.2.78
3. For multiple amplifiers, open one browser tab for each amplifier connected and apply the corresponding IP address.
Web Remote interface page The Web Remote interface page is split into four
tabs: the «Web Remote», «Event log», «Commands» and «Service» tabs.
Web Remote tab The «Web Remote» tab shows the actual screen of the connected
amplifier.
All screens and screen items can be accessed by simply clicking the relevant
item.
28
d&b 40D Reference manual 1.3 en
d&b 40D Reference manual 1.3 en
Web Remote interface
Password dialog Once the device is locked with a password, the Web Remote
interface is also locked and can no longer be accessed. A corresponding dialog
will pop up to allow you to unlock the device.
Event log tab The «Event log» stores a maximum of 10000 records. Once the
maximum number of records is reached, the system starts deleting the first
ones Þ Ring buffer. The number of records displayed depends on the size of the
browser window.
Located on the right-hand side of the record list are various Navigation
buttons allowing you to scroll through the list using the «Page Up/Down» or
«Line Up/Down» buttons or by directly jumping to the «Latest» record. In
addition, the editable «Record» field allows you to enter a dedicated record
number. The corresponding record will be displayed at the very bottom of the
record list.
Storage option ( ) In addition, a storage option is provided which allows you
to store the Event log data locally. This is mainly intended for service
and/or troubleshooting purposes. To save the Event log data locally, proceed
as follows: 1. Select the «Save» button at the bottom right corner of the web
browser window. A corresponding dialog will pop up providing you with a
drop-down list from which you can select either the number («Last [n]») of
records or «All» records to be saved. 2. Choose the desired option from the
drop-down list and select «Save». The event log data will be downloaded and
the download progress will be displayed. Once the download is completed, a
corresponding message will be displayed. 3. Select «Save» to store the Event
log data locally. Your web browser will display the corresponding dialog and
the file will be saved as Event.log to the local download directory you have
specified in the download settings of your browser.
Commands tab This functionality is intended for service purposes only.
29
Web Remote interface
Service tab The «Service» tab provides a «Backup»/«Restore» function for the
complete device configuration.
Note: Backups can only be restored on devices of the same type and that have a
matching firmware version.
Login
To access the service functions, you first have to log in.
If the device is locked by password protection, use the corresponding password
to log in. If no password protection is applied, use “dbaudio” as a password.
Backup
Þ Select the «Download backup file from device» button to store the backup
file (*.backup) locally.
Your web browser will display the corresponding dialog and the file will be
saved to the local download directory you have specified in the download
settings of your browser.
Restore
1. Select the «Upload backup file to device» button to upload the backup file
onto the device.
Your web browser will display the corresponding dialog.
Once the backup file is uploaded, the «Remote ID» and «IP settings» become
accessible and can be edited, if necessary by simply clicking into the
corresponding input field..
2. As a final step, select the «Activate backup file on device» button to
apply the backup and remote settings.
Log file collection
For service or trouble shooting purposes, a log file collection can be
downloaded.
Þ Select the «Download log file collection» button to store the collection
file (*.logpack.) locally.
Your web browser will display the corresponding dialog and the file will be
saved to the local download directory you have specified in the download
settings of your browser.
Logout
To exit the «Service» tab functions, click the «Logout» button at the top.
Licenses and Copyright
Selecting the d&b logo at the top left opens the «Licenses and Copyright»
information page.
30
d&b 40D Reference manual 1.3 en
Operation
Operation (Hardware references)
8.1 Power supply The device utilizes a switch mode power supply with active
Power Factor Correction (PFC) and automatic mains range selection.
The power supply is equipped with mains voltage monitoring, overvoltage and
undervoltage protection as well as an inrush current limiter.
8.1.1 Active Power Factor Correction (PFC)
The active Power Factor Correction provides a clean and highly efficient
sinusoidal current draw, thus providing highest performance under adverse
mains conditions or when very long power cabling is necessary. The power
factor is above 0.9 for mains power consumption values of 350 W or higher.
8.1.2 Mains voltage monitoring
The mains voltage and frequency are recorded by the power supply and can be
viewed on screen. Where voltages outside of this range are present, a self-
resetting protective circuit responds quickly to isolate the internal “Main
Power Supply” leaving only a supervisory circuit running to monitor the mains
voltage. The device accepts mains voltages of up to 400 VACRMS without damage
to the device in case of a missing neutral line or running phase to phase.
8.1.3 Automatic mains range selection The automatic mains range selection
enables the device to be used with any mains supply worldwide without the need
for manual action. The automatic range selection is only available on plug-in
but not during operation. Once in high or low range, the SMPS expects a
permanent mains voltage in this range. To switch from one range to the other,
the unit must be disconnected from the mains.
The power supply incorporates a “Mains Power Supply” and an “Auxiliary Power
Supply”.
Mains Power Supply The Mains Power Supply feeds the power amplifiers within
the following nominal mains ranges:
High range Low range
208 – 240 VAC 100 – 127 VAC
Auxiliary Power Supply
The Auxiliary Power Supply feeds the DSP section and the device control and
operates within the range from 55 VACRMS to 400 VACRMS.
d&b 40D Reference manual 1.3 en
31
Operation (Hardware references)
55 Ü
75
Undervoltage
Standby (Protection)
55
Þ
85
Ü
133
Low range
Operation
Þ
140
Behavior with fluctuating mains voltages With mains voltages other than the
nominal voltages specified above, the device switches to the adequate mode for
either “Standby” (Protection) or “Operation”.
The voltage thresholds are dependent on the slope of the mains voltage change.
Undefined
Standby (Protection)
170
Ü
High range
Operation
190
Þ
266
Ü
400
Overvoltage
Standby (Protection)
276
Þ
400
Undervoltage Undefined Overvoltage
Depending on the operating state, the device will be switched to Standby mode (Protection).
NOTICE!
In Overvoltage state with mains voltages above 400 V, damage to the device
cannot be excluded.
In Undervoltage state, the Auxiliary Power Supply for the device control
operates down to 55 VACRMS.
Up to this threshold …: The display remains active and the device can be
operated
locally. The LED indicators on the front panel remain active. Remote control
via web remote or R1 is still possible without
restrictions. Below this threshold, the device will be switched off.
8.1.4 Mains inrush current limiter The Main Power Supply is started softly to
limit inrush current. Up to two 40D may be powered up at the same time without
triggering a line circuit breaker of 13 – 16 A (@ 230 V) or 20 A (@ 100 – 120
V) respectively.
8.1.5 Mains supply requirements Due to its automatic mains voltage selection,
the amplifier can be fed from all usual mains voltages within the rated ranges
as stated in Þ Chapter 8.1.3 “Automatic mains range selection” on page 31.
For the average and peak current requirements for specific mains voltages
please refer to Þ Chapter 3.1 “Current/power draw and thermal dissipation” on
page 10.
To ensure safe and stable operation, observe the following recommendations and
specifications: Operate a single amplifier on a 13 A circuit breaker at 208 to
240 V (high range) or on a 20 A circuit breaker at 100 to 127 V (low range).
Operate the amplifier at a high-range supply (208 to 240 V), if possible. A
low-range supply (100 to 127 V) requires a cable cross section that is 4 times
higher to achieve comparable power performance.
32
d&b 40D Reference manual 1.3 en
Operation (Hardware references)
When three amplifiers are operated with a three-phase (120°) mains supply, the
current on the N (neutral) conductor can be minimized by matching loads and
signals between the three devices.
Keep the supply line as short as possible and its cross section as high as
possible, especially when operating the device at 100 to 127 V. Voltage drop
at full load (20/13 A at 115/230 V) should not exceed 5 %. For reference
specifications, refer to the following table.
Maximum cable lengths for 5 % voltage drop at 3600 W mains power draw
Cable cross section 100 V
120 V
208 V
1.3 mm2 – AWG 16
Not permitted
Not permitted
21 m/69 ft
1.5 mm2
Not permitted
Not permitted
24 m/79 ft
2.1 mm2 – AWG 14
Not permitted
Not permitted
33 m/108 ft
2.5 mm2
Not permitted
Not permitted
40 m/131 ft
3.3 mm2 – AWG 12
12 m/39.5 ft
18 m/60 ft
53 m/174 ft
4.0 mm2
15 m/50 ft
21 m/69 ft
63 m/206.5 ft
5.3 mm2 – AWG 10
19 m/62 ft
28 m/92 ft
83 m/272 ft
6.0 mm2
22 m/72 ft
32 m/105 ft
95 m/312 ft
8.4 mm2 – AWG 8
31 m/101 ft
44 m/144 ft
133 m/436 ft
230 V 25 m/82 ft 29 m/95 ft 40 m/131 ft 49 m/161 ft 64 m/210 ft 78 m/256 ft 102 m/334.5 ft 116 m/380.5 ft 162 m/531.5 ft
8.1.6 Generator operation/UPS requirements
To operate the amplifier using a mains generator or uninterruptible power
supply (UPS), observe the following:
With the 40D amplifier the apparent power figure (VA value) is about the same
as the effective power figure (W value).
Use a generator or UPS that can deliver the maximum power required by the
entire system. Assume a short time power draw of 3 kVA per 40D. This is
particularly important when using a UPS without dedicated short-time overload
capability.
Run the generator or UPS at 220 to 240 V, if available. 50 or 60 Hz is not an
issue.
8.2 Power amplifiers
The power amplifiers fitted to the 40D utilize Class D technology similar to a
switch mode power supply. Compared to the known linear amplifier concept
(Class A, AB, G or H), Class D power amplifiers produce less heat and allow
for a compact and lightweight design.
While supplying very high maximum output swing, they maintain high efficiency
with any kind of signal and load and run as cool as possible. Channels share
the same power supply and are thermally coupled to provide even higher average
power figures when unevenly loaded. TOP/SUB setups and active cardioid
subwoofers are cases of typical use. A sophisticated circuit design decreases
the impact of the load on the amplifier performance and enables a well defined
sound reproduction. A comprehensive set of protection features individually
prevents each channel from overload and/or damage/fault. Channels that are not
affected will continue to operate, if safely possible.
d&b 40D Reference manual 1.3 en
33
Operation (Hardware references)
8.3 Cooling fans Two temperature and level controlled fans are incorporated
for cooling the internal components, which allows greater cooling during
louder program material. The fan speed is consequently reduced during quieter
passages preventing background noise interference. If the unit heats up a
«Temp. Warning» is issued and the fans will give full cooling power
permanently.
34
d&b 40D Reference manual 1.3 en
Service/Maintenance and care
Service/Maintenance and care
9.1 Service
CAUTION! Potential risk of explosion.
The device incorporates a lithium battery which may cause danger of explosion
if not replaced correctly. Refer replacement only to qualified service
personnel authorized by d&b audiotechnik.
Do not open the device. No user serviceable parts inside. In case of any
damage do not operate the device under any circumstances. Refer servicing only
to qualified service personnel authorized by d&b audiotechnik. In particular
if: objects or liquids have entered the device. the device does not operate
normally. the device was dropped or the housing is damaged.
9.2 Maintenance and care During normal operation, the amplifier provides
maintenance-free service. Due to the cooling concept, no dust filters are
required. As a result, filter exchange or cleaning the filters is not
necessary. However, the air-intake is covered by a grill which should be
regularly cleaned (vacuumed) using an appropriate vacuum cleaner.
9.2.1 Touchscreen cleaning After a certain period of time, the touchscreen may
require cleaning. For this purpose, proceed as follows: Use a soft cloth only.
Do not use any solvent cleaners. To remove very heavy dirt from the panel, it
may be helpful to use a special cleaning spray for TFT screens. In this case,
proceed as follows: 1. Spray on the soft cloth before wiping the screen.
Never apply/spray directly on the screen as the liquid could penetrate the
device.
2. Wipe the screen with moderate pressure.
d&b 40D Reference manual 1.3 en
35
ID 11 15 16 19 20 21 25 27
28 30 32-34 35 36 37
38
39
Service/Maintenance and care
9.3 Possible error messages
The following table lists possible error messages appearing within the Web
Remote interface ordered by the error Id.
Display text
Eventlog text
Description
Location
Possible reasons
System error 128
System error 128 (I2C, IC 0x%02X, Pos %d)
Internal I2C comm. DS error
Internal hardware or software fault
Unknown device type Unknown device type Unknown device type %d
Wrong or missing serial No.
Invalid device ident Invalid device ident Invalid hardware
%d
configuration
ADDAC, Amp, SMPS Missing or wrong module identification
Invalid display ident Invalid display board Invalid DISPLAY
ident %d
identification
Display
Missing or wrong DISPLAY identification
Program error %u Program error %d, Program error
DSP
%d, %d, %d
Various
Invalid DSP Data
Invalid DSP database Invalid DSP data
DSP
(Position %d, Error
%d)
Software error
Program error %u Program error %d: Program error
DSP
AWL error %d in
AWL %d, line %d
Various
SMPS in bootloader SMPS stuck in bootloader
Software missing on SMPS SMPS controller
Firmware update failed or flash corruption, retry update
SMPS comm. error
SMPS communication SMPS comm. error SMPS error (error %04X) Missing keepalive
for
1 sec
SMPS fault or internal communication disturbed
SMPS temp. error %d SMPS temperature Critical SMPS
°C
error %3d°C (power temperature
%uW)
SMPS
Insufficient cooling
SMPS supply error
SMPS supply error XXXVXXX (%5dmV, err %04X)
Supply voltage out of SMPS range
Fluctuating mains voltage, SMPS fault
SMPS ZK1 overvoltage
SMPS supply error Zk1 overvoltage (Zk1 %3dV, %04X)
Supply voltage out of SMPS range
Mains surge
Mains surge detected SMPS surge restart (Zk1 peak %3dV, Mains peak %3dV)
SMPS
Rapid surge on mains voltage
Mains undefined range
Mains undefined
Mains voltage out of SMPS
range (avg %3dV, err range at startup
%04X)
Refer to: Þ Chapter 8.1 “Power supply” on page 31
SMPS overcurrent
SMPS overcurrent (i- SMPS overcurrent peak %3.1dA, avg %3dV, err %04X)
SMPS
Refer to: Þ Chapter 8.1 “Power supply” on page 31
Mains overvoltage
Mains overvoltage (avg %3dV, peak %3dV, err %04X)
Mains voltage too SMPS high for current range
Refer to: Þ Chapter 8.1 “Power supply” on page 31
36
d&b 40D Reference manual 1.3 en
Service/Maintenance and care
ID
Display text
Eventlog text
Description
Location
Possible reasons
40
Mains undervoltage Mains undervoltage Mains voltage too SMPS
Refer to:
(avg %3dV, peak low for current range
Þ Chapter 8.1
%3dV, err %04X)
“Power supply”
on page 31
41
Mains frequency faul Mains frequency fault Mains frequency out SMPS
External
(%3d Hz, err %04X) of range
43
SMPS restart error SMPS error: too
SMPS restart fault SMPS
An error prevents
many restarts (restart
startup or SMPS fault
count %d)
44
SMPS rail “Eco” erro SMPS rail “Eco” error SMPS rail “Eco” error SMPS
Power consumption
(i-peak %3.1dA, rail
too high in “Eco”
%3dV, err %04X)
45
SMPS rail startup SMPS rail startup SMPS rail error at SMPS
Power consumption
error
error (i-peak %3.1dA, startup
too high during
rail %3dV, err %04X)
startup phase
46
SMPS rail run error SMPS rail run error (i- SMPS rail error
SMPS
Power Consumption
peak %3.1dA, rail
too high in normal
%3dV, err %04X)
mode.
47
SMPS controller reset SMPS controller
SMPS controller
SMPS
Various
unexpectedly reset unexpectedly reset
(reason: %04X)
50
Invalid device para Channel ‘%c’: invalid Invalid device
DSP
Software error or
device parameters parameters
wrong device type
(device ident %d)
detected
51
Invalid DSP prog %u Channel ‘%c’ : invalid DSP program invalid DSP
Software error
DSP program %d
52
DSP boot error
Channel ‘%c’: DSP DSP boot error
DSP
DSP or software error
boot error (DSP
program %d)
53
DSP systick stall
DSP ‘%c’ system ticker DSP Systick stalled DSP
DSP or software error
stalled
58
DSP comm. error
Channel ‘%c’: DSP DSP comm. error
DSP
DSP fault or software
communication error
error
59
Invalid setup data Channel ‘%c’: invalid DSP invalid setup DSP
Software error
speaker setup
data
(speaker id %d, no.
%d, err %d)
61
Invalid AP slot %d Channel ‘%c’: invalid Invalid
AP slot %d (file
ArrayProcessing data
version %d)
Software error
78
Full amp. error.
Full amp. error
Full amp. error
SMPA
All channels show an
(SMPA AB %04X,
error
SMPA CD %04X)
79
Amp. in bootloader Channel ‘%c’ stuck in Amp. in bootloader SMPA
Firmware update
bootloader
failed or flash
corruption, Retry
update
80
Amp. comm. error Channel ‘%c’
Amp. comm. error SMPA
Communication
communication error No keepalive for 1
disturbed or SMPA
(error %04X)
sec
fault
82
Temperature error %d Channel ‘%c’
Critical amp. channel SMPA
Insufficient cooling
°C
temperature error %d temperature
°C (power %uW)
d&b 40D Reference manual 1.3 en
37
ID 83-87 88
89 90 91
92
93
94 95 96 97 98 99 100 124 150 160
Service/Maintenance and care
Display text
Eventlog text
Description
Location
Supply fault
Channel ‘%c’ supply Aux. supply voltage SMPA fault XXXX (err %04X, out of range %5dmV)
Overcurrent
Channel ‘%c’ output overcurrent (CL counter %3.1ukCnt, power %uW, temp. %d°C)
Overcurrent, Overvoltage on output
SMPA
DC on output
Channel ‘%c’ DC error
DC on output
SMPA
HF on output
Channel ‘%c’ HF error HF on output
SMPA
Ext. amp. error
Channel ‘%c’ ext. amp. reported an error (ext. err %04X, err %04X)
Ext. Amp. controller in SMPA protection
Ext. amp. no comm.
Channel ‘%c’ ext. amp. no communication (ext. err %04X, err %04X)
Ext. amp. no comm.
SMPA
Sudden overtemp.
Channel ‘%c’ sudden temporary overtemperature (ipeak %3.1dA)
Sudden temporary overtemperature on channel
SMPA
Overtemperature %d Channel ‘%c’
Channel mute due to SMPA
°C
overtemperature %d overtemperatur
°C (power %uW)
Clock fault
Channel ‘%c’ clock fault (%3.1ukHz, power %uW)
Clock fault
SMPA
Supply fault
Channel ‘%c’ supply Supply fault fault 220V (err %04X, %5dmV)
SMPA
Rail loss mute
Channel ‘%c’ muted due to rail loss (err %04X, %3.1dV)
Rail unexpectedly low SMPA
Mains loss mute
Channel ‘%c’ muted Mains unexpectedly SMPA due to mains loss (err not OK %04X, avg. %3dV)
Temp. warning %d°C Channel ‘%c’
High channel
SMPA
temperature warning temperature warning
%d°C (power %uW)
SMPS temp. warning SMPS temperature
%d°C
warning %3d°C
(power %uW)
High SMPS
SMPS
temperature warning
OCA remote error
OCA remote error %u
OCA remote error
Speaker imp. fault
Load Monitoring impedance error
Input fallback
Input fallback (A1= Input Fallback %d, A2=%d, D1=%d, D2=%d)
Possible reasons Hardware fault
Short curcuit on output
Hardware fault Software error
Current peak on output
Insufficient cooling
SMPA fault
Hardware fault, short on output, SMPA, SMPS fault Mains voltage loss
Mains voltage loss
Insufficient cooling
Insufficient cooling
Speaker or cable fault Input Fallback was activated
38
d&b 40D Reference manual 1.3 en
ID 161-164
165-168
Service/Maintenance and care
Display text
Eventlog text
Description
Input monitoring fault Input monitoring fault Input Monitoring AX (level %4.1ddBu, Fault threshold %4.1ddBu)
Input monitoring fault
Input monitoring fault Input Monitoring
DX (level
Fault
%4.1ddBFS, lock %d,
DS data pri %d, DS
data sec %d)
Location
Possible reasons Cabling
Cabling, routing, unlocked
d&b 40D Reference manual 1.3 en
39
Manufacturer’s declarations
Manufacturer’s declarations
10.1 Declaration of Conformity This declaration applies to:
d&b Z2830 40D Amplifier
by d&b audiotechnik GmbH & Co. KG.
All product variants are included, provided they correspond to the original
technical version and have not been subject to any later design or
electromechanical modifications.
We herewith declare that said products are in conformity with the provisions
of the respective directives including all applicable amendments.
Detailed and applicable declarations are available on request and can be
ordered from d&b or downloaded from the d&b website at www.dbaudio.com.
10.2 WEEE Declaration (Disposal) Electrical and electronic equipment must be
disposed of separately from normal waste at the end of its operational
lifetime.
Please dispose of this product according to the respective national
regulations or contractual agreements. If there are any further questions
concerning the disposal of this product, please contact d&b audiotechnik.
WEEE-Reg.-Nr. DE: 13421928
10.3 Licenses and Copyright A list of the components and a full-text version
of all licenses and copyrights can be accessed using the amplifier’s Web
Remote interface.
Þ Selecting the d&b logo at the top left of the «Web Remote» interface page
allows access to the «Licenses and Copyright» information page.
This page provides an overview of the open source software used in this
product. As required by the GPL and LGPL licenses, we will send you a copy of
the used source code on request. If you would like to obtain a copy, please
contact us by mail to: software.support@dbaudio.com
40
d&b 40D Reference manual 1.3 en
www.dbaudio.com
D2039.EN .01, 02/2024 © d&b audiotechnik GmbH & Co. KG
www.dbaudio.com
D2039.EN .01, 02/2024 © d&b audiotechnik GmbH & Co. KG