DANLEY DSA750X4 Multi Channel Amplifier User Manual
- June 10, 2024
- DANLEY
Table of Contents
DSA750X4 Multi Channel Amplifier
Product Information
The amplifier is a Class-I product intended for amplification of
audio signals and connection to moving-coil loudspeaker systems. It
has been designed to perform satisfactorily in its intended
application and environment, provided that all technical and safety
notices are followed.
Technical Notices
-
The amplifier should be installed with a mains cable including
the required earth connection to comply with Safety Class-I. -
The amplifier should be installed by competent and qualified
personnel to avoid damage or failure caused by installation or
operational errors, which may invalidate support, warranty or
guarantees of performance. -
The amplifier is not suitable for use in locations where it may
be accessible to minors. -
The amplifier is intended for amplification of audio signals
within the audio band (20Hz to 20kHz) and for connection to
moving-coil loudspeaker systems. Use of the amplifier for
amplification of signals outside the audio band or to drive
transducers other than moving-coil loudspeakers may invalidate
support, warranty or guarantees of performance. -
The amplifier should only be used within professionally
installed and configured audio systems comprising input and output
ancillary equipment known to be of an appropriate level of
performance and in good operating condition. Any damage to or
unsatisfactory performance from the amplifier caused by inadequate
or failed input or output ancillaries may invalidate support,
warranty or guarantees of performance. -
Specific warranty terms are the responsibility of the amplifier
re-seller.
Safety and Environmental Notices
The lightning flash with arrowhead symbol in a triangle
indicates the presence of uninsulated dangerous voltage within the
product’s enclosure that may constitute a risk of electric shock to
humans. The exclamation point within an equilateral triangle
indicates the presence of important safety, operating and
maintenance instructions in the manual.
To prevent fire or electric shock, do not expose the equipment
to rain or moisture. If the equipment is operated in a confined or
multiple rack installation, ensure that the internal ambient
operating temperature does not exceed the published maximum
operating temperature for the equipment.
Important Safety Instructions
-
Read and keep these instructions.
-
Heed all warnings and follow all instructions.
-
Do not use this apparatus near water or submerge it in water or
liquids. -
Do not use any aerosol spray, cleaner, disinfectant or other
chemicals on this equipment.
Product Usage Instructions
-
Ensure that the amplifier is installed with a mains cable
including the required earth connection as specified in the
technical notices. -
Only use competent and qualified personnel to install the
amplifier to avoid installation or operational errors that may
invalidate support, warranty or guarantees of performance. -
Ensure that the amplifier is installed in a location that is
not accessible to minors. -
Use the amplifier only for amplification of audio signals
within the audio band (20Hz to 20kHz) and for connection to
moving-coil loudspeaker systems. -
Use the amplifier only within professionally installed and
configured audio systems comprising input and output ancillary
equipment known to be of an appropriate level of performance and in
good operating condition to avoid damage or unsatisfactory
performance that may invalidate support, warranty or guarantees of
performance. -
Follow the specific warranty terms provided by the amplifier
re-seller. -
To prevent fire or electric shock, do not expose the equipment
to rain or moisture. If the equipment is operated in a confined or
multiple rack installation, ensure that the internal ambient
operating temperature does not exceed the published maximum
operating temperature for the equipment. -
Read and keep the important safety instructions provided in the
manual.
INSTALLATION GUIDE / USER MANUAL
DSA500X4 · DSA750X4
Rev. 20220706
Technical and Safety Notices
Please read the following important technical, safety and environmental
notices before installing and using your amplifier.
Technical Notices
All reasonable design and engineering steps have been taken to ensure that
these amplifiers always perform satisfactorily in their intended application
and environment and will provide appropriate levels of support to ensure that
all reasonable customer needs and expectations are met. Such support however
is contingent on the following provisions.
1. These amplifiers are Class-I products and should be installed with a mains
cable including the required earth connection to comply with the Safety
Class-I.
2. These amplifiers should always be installed by competent and qualified
personnel. Amplifier damage or failure caused by installation or operational
errors may invalidate support, warranty or guarantees of performance.
3. These amplifiers are not suitable for use in locations where they may be
accessible to minors.
4. These amplifiers are intended to be used specifically for the
amplification of audio signals and for connection to moving-coil loudspeaker
systems. Use of these amplifiers for amplification of signals outside the
audio band (20Hz to 20kHz) or to drive transducers other than moving-coil
loudspeakers may invalidate support, warranty or guarantees of performance.
Safety and Environmental Notices
Note: The intent of the lightning flash with arrowhead symbol in a triangle is
to alert the user to the presence of uninsulated “dangerous” voltage within
the product’s enclosure that may be of sufficient magnitude to constitute a
risk of electric shock to humans.
Note: The intent of the exclamation point within an equilateral triangle is to
alert the user to the presence of important safety, and operating and
maintenance instructions in this manual.
WARNING! TO PREVENT FIRE OR ELECTRIC SHOCK, DO NOT EXPOSE THIS EQUIPMENT TO
RAIN OR MOISTURE.
Ambient Temperature Note: If this equipment is operated in a confined or
multiple rack installation, the internal ambient operating temperature may
exceed
the external ambient temperature. It is important to ensure in these
circumstances that the published maximum operating temperature for the
equipment is not exceeded.
Reduced Air Flow: Ensure that rack or other closed installation does not
restrict the cooling airflow required for safe and reliable operation of the
equipment.
5. These amplifiers should only be used within professionally installed and configured audio systems comprising input and output ancillary equipments that is known to be of an appropriate level of performance and in good operating condition. Any damage to, or unsatisfactory performance from, these amplifiers caused by inadequate or failed input or output ancillaries may invalidate support, warranty or guarantees of performance.
6. These amplifiers are intended to be installed and operated indoor in a controlled environment (pollution degree, PD2) within an ambient temperature range of 0°C to 40°C. These amplifiers are not intended for use above 2000 meters above sea level. Amplifiers installed or operated in environments outside these limits may invalidate support, warranty or guarantees of performance.
7. Specific warranty terms are the responsibility of the amplifier re-seller.
Technical and Safety Notices
Important Safety Instructions
Environmental Statement
1. Read these instructions. 2. Keep these instructions. 3. Heed all warnings.
4. Follow all instructions. 5. Do not use this apparatus near water. 6. Do not
submerge the equipment in water or liquids. 7. Do not use any aerosol spray,
cleaner, disinfectant or
fumigant on, near or into the equipment. 8. Clean only with a dry cloth. 9. Do
not block any ventilation opening. Install in accordance
with the manufacturer’s instructions. 10. Do not install near any heat sources
such as radiators, heat
registers, stoves, or other apparatus (including amplifiers) that produce
heat. 11. To reduce the risk of electrical shock, the power cord shall be
connected to a mains socket outlet with a protective earthing connection. 12.
Do not defeat the safety purpose of the polarized or grounding type plug. A
polarized plug has two blades with one wider than the other. A grounding type
plug has two blades and a third grounding prong. The wide blade or the third
prong are provided for your safety. If the provided plug does not fit into
your outlet, consult an electrician for replacement of the obsolete outlet.
13. Protect the power cord from being walked on or pinched particularly at
plugs, convenience receptacles, and the point where they exit from the
apparatus. 14. Do not unplug the unit by pulling on the cord, use the plug.
15. Only use attachments/accessories specified by the manufacturer. 16. Unplug
this apparatus during lightning storms or when unused for long periods of
time. 17. 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 or objects have fallen into
the apparatus, the apparatus has been exposed to rain or moisture, does not
operate normally, or has been dropped. 18. The appliance coupler, or the AC
Mains plug, is the AC mains disconnect device and shall remain readily
accessible after installation. 19. Adhere to all applicable, local codes. 20.
Consult a licensed, professional engineer when any doubt or questions arise
regarding a physical equipment
installation.
This product complies with international directives, including but not limited to the Restriction of Hazardous Substances (RoHS) in electrical and electronic equipment, the Registration, Evaluation, Authorization and restriction of Chemicals (REACH) and the disposal of Waste Electrical and Electronic Equipment (WEEE). Consult your local waste disposal authority for guidance on how properly to recycle or dispose of this product.
Introduction and Overview
1. Introduction
Danley DSA power amplifiers have been designed to provide configurable,
consistent and reliable high performance audio power amplification for
residential, commercial and entertainment applications.
This manual covers the features, installation and functions of the Danley
DSA500X4 and DSA750X4 models. Please read the manual fully before installing
and using an amplifier. If you have any questions regarding amplifier
configuration, installation or operation please contact the appropriate
customer support portal.
Following this introduction, the manual is divided into sections covering the
following topics:
· 2. Overview · 3. Carton Contents · 4. Installation · 5. Configuration · 6.
Connections · 7. Operation · 8. Specifications
2. Amplifier Overview
Danley DSA500X4 and DSA750X4 amplifiers are a full rack width, 2U format power amplifiers that can drive both conventional low impedance (Lo-Z, 4 to 16) loudspeakers and high impedance (Hi-Z, 70V/100V) transformer coupled loudspeakers. They provide four analog inputs, one stereo S/ PDIF digital input, and either two or four outputs (Lo-Z mode), or one or two outputs (Hi-Z or Lo-Z BTL mode). Danley DSA amplifier model output channel counts and power outputs are as follows:
Danley DSA500X4
Mode
Channels
Lo-Z
Four
Lo-Z (BTL) Two
Hi-Z
Two
Max Rated Output per Channel 500 Watts 1000 Watts 1000 Watts
Danley DSA750X4
Mode
Channels
Lo-Z
Four
Lo-Z (BTL) Two
Hi-Z
Two
Max Rated Output per Channel 750 Watts 1500 Watts 1500 Watts
Note: In Lo-Z BTL (bridge-tied load) mode, two amplifier output channels are combined to create a single, double power output channel. BTL mode can be engaged via the amplifier Output Mode configuration setup menu described in Section 5 of this manual.
Introduction and Overview
2.1 Connections and Power Switching
3. Carton Contents
Danley DSA signal input and output connections are accomplished via RCA Phono
and Euroblock style connectors. A GPIO (General Purpose In/Out) Euroblock
connector enables some amplifier functions to be controlled externally, and
wireless or RJ45 socket Ethernet network connection options are also provided.
Cable connectors and connections are described and illustrated in Section 6 of
this manual
Danley DSA amplifiers incorporate a front panel mounted power button. Press
the button once to switch the amplifier on or off. Amplifier power management
behaviour can be configured via the Control web app Settings Menu described in
Section 5 of this manual.
Danley DSA amplifiers are shipped in a cardboard carton containing the
amplifier unit, a mains cable appropriate for the sales territory, an
accessory pack, and a document pack. The full contents is listed below.
· Amplifier unit · Rack mount ears (fitted) · Mains power cable · Input
connector x 2 · GPIO socket connector · Output connector x 1 or 2 · Adhesive
rubber feet x 4 · Document pack
2.2 Network Features
Danley DSA amplifiers are TCP/IP network connected devices that require a
wired or wireless network connection to access their configuration menus. The
configuration menus are accessed via the Control Web App interface and cover
Input, Zone, Output and General Settings functions. The Control web app
configuration menus are described in Section 5 of this
manual.
2.3 Firmware
This manual describes the features, functions and user interface of Danley DSA amplifiers running Firmware Version 1.2.0.
It is strongly recommended that the firmware version installed in the amplifier in use is checked initially, and regularly thereafter. If updated firmware is available, the amplifier should be updated as a priority.
The firmware installed in the amplifier can be identified and updated by selecting the Device option in the Control web app Settings Menu. Firmware versions can be checked, and firmware downloaded, from the website: https://www. danleysoundlabs.com
Installation
4. Installation
4.1 Amplifier Location Danley DSA amplifiers are shipped with rack “ears”
attached and are primarily intended for standard (19 inch) equipment rack
installation. If not to be installed in an equipment rack, Danley DSA
amplifiers can be placed free-standing on a flat surface. Adhesive rubber feet
are supplied for this purpose. It is important that any installation provides
space for airflow through the ventilation apertures at the front and rear of
the amplifier. This is illustrated in Diagram 1a.
Diagram 1a Danley DSA amplifier dimensions. (Shaded area defines ventilation
space.)
332 mm 13.1 in
440 mm 17.3 in
88 mm 3.5 in
Configuration
5. Configuration
Before making input, output and GPIO connections, an initial Danley DSA
amplifier configuration should be established. It is particularly important
that the amplifier output format is configured appropriately for the speakers
that are to be connected.
Configuration requires that Danley DSA amplifiers are connected to mains
power, switched on and connected to network services. These connections are
described in the following two sections.
http://192.168.64.100. The Control Web App interface will open to enable
amplifier configuration as required.
Note: Danley DSA amplifiers can be configured to use DHCP for network
connection if required. However, if a Danley DSA amplifier using DHCP is power
cycled, it is possible that the TCP/IP network router will assign it a
different IP address, leaving its configuration page inaccessible via the
previous address. If this occurs, a network scanning app can be used to
identify the new IP address. DHCP and Fixed IP address option settings can be
found in the Settings Tab menu described in Section 5.3.
5.1 Mains Power Connection
Danley DSA amplifiers incorporate a power factor corrected power supply and
can be used with mains input voltage from 100V AC to 240V AC, 50/60Hz. Use the
mains cable supplied with the amplifier and connect it to a mains supply.
Press the front panel power button to switch on the amplifier. After a short
delay the front panel Status indicator will illuminate green.
5.2 Network Services
Danley DSA amplifiers are configured via the Control Web App interface. Before
the Web App configuration menus can be accessed, Danley DSA amplifiers must be
connected to the same TCP/IP network as the computer or mobile device that is
to be used for configuration.
5.2.1 Wired (Ethernet) Network Connection To connect a Danley DSA amplifier to
a TCP/IP network using a wired connection (Ethernet) follow the steps below.
1. Use an Ethernet cable to connect the Danley DSA amplifier rear panel
Network Control socket to a free socket on a network router or switch, or
directly to an Ethernet equipped laptop or desktop computer.
5.2.2 Wireless (WiFi) Network Connection To connect a Danley DSA amplifier to
a TCP/IP network using a wireless connection (WiFi) follow the steps below.
1. With the Danley DSA amplifier connected to mains power, wait for the front
panel WiFi indicator to illuminate green.
2. Use a mobile, laptop or desktop device to search for available WiFi
networks. Connect to, Danley DSA (product serial number)’ using the password,
`password’. The amplifier serial number can be found on its rear panel.
3. Open a computer or mobile device web browser and enter the IP address:
192.168.4.1. The Control Web App interface will open to enable amplifier
configuration as required.
4. Select the Web App Settings Tab followed by WiFi > WiFi Mode > Client to
configure the amplifier to connect to the required WiFI network. The WiFi
network name and password will be required.
It is strongly recommended that the Danley DSA amplifier Access Point WiFi
password is changed following initial wireless connection.
2. Connect the Danley DSA amplifier to mains power using the supplied mains cable. Wait for the front panel Network indicator to illuminate green to indicate that the amplifier has network connectivity.
3. The Danley DSA amplifier default LAN IP address is 192.168.64.100. Configure the laptop or desktop computer for a fixed IP address in the same IP range; eg. 192.168.64.10, with Subnet mask of 255.255.255.0 (or prefix 24) and set the Gateway to 192.168.64.1.
4. Open a laptop or desktop web browser and enter the address
Configuration
5.3 Configuration Menus
Opening a web browser that is network connected to a Danley DSA amplifier
initially displays the Control Web App Dashboard illustrated in Diagram 5a.
The Dashboard is the `home’ page from which all other configuration options
can be accessed.
The Dashboard displays the amplifier status, output zones and the
configuration menu tabs. It also enables immediate access to zone volume
control The functions available under each configuration menu tab are
described in the following sections.
5.3.1 Input Tab The Input Tab provides naming, mono/stereo selection,
sensitivity, and gain trim for each amplifier input channel. An internal pink
noise source, provided for system testing and set up, can also enabled or
disabled, and adjusted for gain via the Input Tab. Diagram 5b illustrates the
Input Tab.
Diagram 5b Input Tab display (two inputs only shown)
Adjust zone volume
Input name – type to edit Select mono or stereo Select input sensitivity option Adjust input gain
Adjust zone volume
Diagram 5a Configuration Dashboard display (two output amplifier model shown)
Note: When adjusting input gain, the input level display should remain green. If it displays red, the input gain should be reduced.
Configuration
5.3.2 Zone Tab The Zone Tab enables installation zones to be defined and
named, and provides access to further sub-menus. Zones might be bar or
restaurant areas for example, or different rooms in a home. For all Zone Tab
menus, the installation zone under configuration is selected by highlighting
one of the zone identifiers (A, B, C or D) at the top of the page. Diagram 5c
illustrates the Zone Tab.
· The Source menu option enables inputs to be assigned to zones.
· The GPIO Volume Control option enables external volume control to be applied
to individual zones. The GPIO configuration menu can be found under the
Settings Tab.
· The Compressor option enables default or custom signal compression to be
applied to individual installation zones.
Note: Compression can be useful to reduce the volume difference between loud
and quiet audio material. The lower the compression threshold is set, the more
the difference between loud and soft will be reduced. The overall zone volume
may need to be increased when compression is used. The default compression
parameters are appropriate for most installations.
5.3.3 Output Tab The Output Tab enables amplifier outputs to be named and
provides access to further sub-menus. For all Output Tab menus, the amplifier
output under configuration is selected by highlighting one of the output
identifiers (1, 2, 3 or 4) at the top of the display. The Output Tab also
enables Speaker Preset configurations to be created, exported, imported or
cleared. Diagram 5d illustrates the Output Tab.
Note: The number of individual outputs available for configuration will depend
on the Danley DSA amplifier model and the input, zone and output mode
configuration.
· The Routing menu enables zones to be assigned to amplifier outputs.
Note: Routing for zones specified as stereo will automatically offer three
output options: left channel, right channel or summed mono. The summed mono
signal can potentially be used to drive a mono subwoofer.
· The Delay menu enables delay to be applied to individual amplifier outputs.
· The Equalizer menu enables parametric equalization to be applied to
individual amplifier outputs. Equalizer settings configured for one amplifier
output can be copied and applied to other outputs.
Select zone
Zone name – type to edit
Adjust zone volume
Select mono or stereo
Select input Select GPIO volume control mode Select compressor mode and enable
Select output Output name – type to edit
Select zone Enable and configure output delay if required
Enable and configure output EQ if required Configure and manage speaker
presets
Diagram 5c Zone Tab display
Diagram 5d Output Tab display
Configuration
· The Speaker Preset menu enables a set of speaker parameters to be adjusted,
and preset configurations to be created.
· Speaker Presets can be simply applied to the selected amplifier output or
imported, chosen from a library, exported or cleared. The preset
configurations can include any or all of the parameters described in Section
5.3.4 and can be locked to prevent inadvertent modification. Diagrams 5e to 5h
illustrate the application of speaker presets.
Speaker Preset data provided by third parties for use with specific speakers
can be imported and applied to amplifier outputs. To import speaker preset
parameters follow the steps described below and illustrated in the diagrams.
1. Select either the IMPORT PRESET FROM FILE or SELECT PRESET FROM LIBRARY
option from the Speaker Preset menu. If no import option is visible, select
CLEAR to delete any existing speaker preset data.
Note: The SELECT PRESET FROM LIBRARY option will be unavailable if no speaker
preset libraries have been created. Speaker preset library creation and
management is described in Section 5.3.5.
Diagram 5f Speaker Preset import file selection
Diagram 5e Speaker Preset Parameters
Select output
Select to configure Select to configure Select to configure Select to
configure Select to configure Select to configure Select to configure
2. Select the appropriate `.zcp’ format speaker preset data file to import
from either a Library or a computer folder. The preset data will be applied to
the selected amplifier output as soon as the file import is complete.
3. If the Speaker Preset data requires modification it can be customized by
selecting the CUSTOMIZE PRESET option.
Note: If an imported Speaker Preset data file includes locked parameters, they
will be unavailable for modification.
5.3.4 Speaker Preset Menu Parameters · The Crossover & Gain preset menu
enables high or low-
pass crossover filters and gain adjustment to be applied to individual
amplifier outputs.
· The Speaker EQ preset menu enables parametric equalization to be applied to
individual amplifier outputs.
· The FIR preset menu enables FIR (Finite Impulse Response) based equalization
filter coefficients generated by external speaker measurement software to be
imported and applied to individual amplifier outputs.
Note: FIR coefficient files in either .csv or .txt format can be imported.
Diagram 5g Speaker Preset applied
Configuration
Diagram 5h Speaker Preset parameter adjustment
· The Driver Alignment preset menu enables delay to be applied to individual
amplifier outputs.
· The Polarity preset menu enables the polarity of individual amplifier
outputs to be reversed.
· The Limiter preset menu enables signal limiting to be applied to individual
amplifier outputs. Clip limiting, peak limiting and RMS limiting can be
individually or collectively engaged. The Peak limiter can be set to either
automatic or custom parameter values. The RMS limiter has default parameter
values that can be adjusted but has no automatic option.
Note: In automatic mode, the peak limiter parameters adjust automatically in
response to Crossover & Gain high-pass filter settings.
· The Output Mode preset menu enables individual amplifier outputs to be
switched off or configured for Lo-Z, Hi-Z or Lo-Z BTL modes. In Hi-Z modes, a
high-pass filter can also be configured and applied to the output. The number
of outputs available will depend on the amplifier model, input setup and zone
setup. For example, a two output amplifier will have two outputs available if
Lo-Z mode is selected but only one output available if Hi-Z mode is selected.
Note: In Lo-Z BTL (bridge-tied load) mode, two amplifier output channels are
combined to create a single, double power output channel.
Note: Use of a high-pass filter with Hi-Z mode loudspeakers is useful to avoid
the possibility of distortion caused by low frequency line transformer
saturation. Begin with the default filter setting of 70Hz. If low frequency
distortion is still audible, increase the frequency setting one step at a time
until the distortion is no longer audible.
Configuration
5.3.5 Settings Tab The Settings Tab enables miscellaneous amplifier settings
to be configured and installation data to be recorded. The Settings Tab
provides access to further sub-menus. Diagram 5i illustrates the Settings Tab.
· The System Information menu provides text fields for the recording of
installation data.
· The Device menu records amplifier specific information such as the model
number and firmware version. A firmware update routine and identifier button
can also be found under the Device menu.
· The Backup & Restore menu enables amplifier configuration data to be
downloaded to an external archive, and enables previously saved configuration
files to be uploaded and adopted by the currently connected amplifier.
· The Speaker Library menu enables management of speaker preset libraries.
Existing libraries of speaker preset files (.zcl) can be created or imported,
and existing libraries edited or fully deleted. Diagram 5j illustrates the
creation and management of speaker preset libraries.
· The Power Management menu enables various automatic switch-on and standby
options to be engaged. The Power Management menu also offers a timed Mute
function.
Note: The front panel power switch will override any power management
settings.
· The GPIO menu enables configuration of the multi-purpose GPIO interface
pins.
· The LAN menu enables configuration and reset of the wired network options
and parameters.
· The WiFi menu enables configuration and reset of the wireless network
options and parameters.
Diagram 5i Settings Tab menu
Library name – type to edit Library version – type to edit
Import preset data (.zcp) to library Creat new library Rename library Edit or
delete library
Diagram 5j Speaker Library Creation and Management
Input Setup
Analog 1
Input Sensitivity
Input Gain
Zone Setup & Routing
Level Adjustment
Compressor
Gain Trim
Delay
EQ
Crossover
EQ
Analog 2
Input Sensitivity
Analog 3
Input Sensitivity
Analog 4
Input Sensitivity
SPDIF (stereo)
Input Gain
Input Gain
Input Gain
Input Gain
Input Selection
Level Adjustment
Level Adjustment
Level Adjustment
Compressor Compressor
Output Matrix Zones A – D Outputs 1 – 4
Compressor
Gain Trim Gain Trim Gain Trim
Delay Delay Delay
EQ
Crossover
EQ
EQ
Crossover
EQ
EQ
Crossover
EQ
Zone Adjustment Parameters
Pink Noise
Gain
Output Setup
FIR
Driver Alignment
Polarity
Limiter
BTL
Output 1
Amplifier
2 x Low-Z
1 x Hi-Z
FIR
Driver Alignment
Polarity
Limiter
Output 2
FIR
Driver Alignment
Polarity
Limiter
BTL
Output 3
Amplifier
2 x Low-Z
1 x Hi-Z
FIR
Driver Alignment
Polarity
Limiter
Output 4
Speaker Preset Parameters
Configuration
5.4 Setup and Signal Routing Thanks to their network based configuration
features, Danley DSA amplifiers offer considerable versatility in terms of
sources, signal routing, installation zones and output modes. Inputs can be
freely assigned to installation zones, and those zones assigned freely to the
available amplifier outputs in either Lo-Z or Hi-Z modes. This versatility
enables, for example, one amplifier simultaneously to drive both Lo-Z and Hi-Z
speakers, or for different inputs to be routed to different output zones. The
following paragraphs describe and illustrate the recommended procedure for
configuring input, zone and output routing. A general signal flow schematic is
also illustrated in Diagram 5k.
Diagram 5k Signal Flow Schematic (four output amplifier)
SPDIF Out (stereo). Zones A (left) and B (right)
Configuration
5.4.1 Input Setup Open the configuration Dashboard and select the Input Tab.
The Input Tab is shown in Diagram 5b.
· To edit default input names simply select and type in the Input Name field.
· Define a mono or stereo input by selecting the appropriate option. Defining
a stereo input will reduce the total number of discrete inputs available.
· Select an input sensitivity option from the drop-down menu: +14dB, +4dB,
-10dB and microphone’ options are available. Generally, the +14dB or +4dB options are appropriate forprofessional audio’ source hardware with balanced
outputs, while the -10dB option is more appropriate for consumer audio’ source hardware with unbalanced outputs. Themicrophone’ option provides the
significantly greater sensitivity required for microphones.
Note: Only dynamic microphones are suitable for connection. Phantom power for
condenser microphones is not provided.
· If necessary, adjust the input gain using the slider or up/ down icons. Gain
adjustment is intended to be used for fine output level adjustment following
initial use.
5.4.2 Zone Setup & Routing Open the configuration Dashboard and select the
Zone Tab. The Zone Tab is shown in Diagram 5c.
· Select the zone to be configured. The number of zones available and their
channel format (stereo or mono) will depend on the amplifier model, input
setup and output mode (Lo-Z or Hi-Z). For example, a two output amplifier can
have the following zone configurations: · 1 x stereo Lo-Z zone · 2 x mono Lo-Z
zones · 1 x mono Hi-Z zone
· A four output amplifier can have the following zones configured: · 2 x
stereo Lo-Z zones · 4 x mono Lo-Z zones · 2 x mono Hi-Z zone · 1 x mono Hi-Z
zone + 1 x stereo Lo-Z zone · 1 x mono Hi-Z zone + 2 x mono Lo-Z zones
Note: When configured in Lo-A BTL mode of Hi-Z mode Danley DSA amplifiers
operate in `bridged’ mode where the output of two channels is combined. This
means that the number of output channels available in Hi-Z mode is half that
available in Lo-Z mode .
Note: Mono signals might be mono at source, created though combining the left
and right channels of a stereo signal (summed mono) or treating the left and
right channels of a stereo signal independently (split mono).
· Name zones by typing in the Zone Name field.
· Adjust the zone volume if required by using the slider.
· Define a mono or stereo zone by selecting the appropriate option. Defining a
stereo zone will reduce the total number of further zones available.
· Specify an input for the zone by selecting from the dropdown menu. Selecting
a stereo input for a mono zone will automatically sum the stereo channels to
mono.
Configuration
5.5 GPIO Setup and Connection
Danley DSA amplifiers provide a GPIO socket that enables remote control of
volume, standby, mute and trigger functions. The GPIO connector pin functions
are described in the GPIO Settings menu illustrated in Diagram 5l. The
connection of GPIO based remote volume control and standby/mute are
illustrated in Diagram 5m and Diagram 5n respectively.
Note: The GPIO connector must not be used for any unintended purpose.
Amplifier damage may result from incorrect use of GPIO.
Note: Shielded cable must be used when connecting standby switches and
potentiometers via GPIO.
Note: GPIO Pin 8 has a low output impedance and is able to supply a maximum
current of 10mA.
Note: GPIO Pin 1 and Pin 3 both offer ground connections: Pin 1 is connected
directly to the amplifier chassis. Pin 3 is connected to the chassis via a 220
Ohm resistor. The `soft ground’ connection of Pin 3 is potentially useful for
managing ground loops that may cause audible hum.
Diagram 5l GPIO Settings Menu
Diagram 5m Potentiometer connections for remote volume control via GPIO.
Note: Diagram 6c illustrates use of the GPIO connector.
Potentiometer (>10k)
Connect Wiper to Pin 4, 5, 6 or 7.
Diagram 5n Connections for remote standby/mute switch via GPIO.
Note: Diagram 6c illustrates use of the GPIO connector.
Switch open or closed toggles Standby or Mute depending on options selected in
the GPIO Settings Menu
Ground +3V3 Ground Standby/Mute
Connections
6. Connections
Danley DSA amplifier rear panel connections are illustrated in Diagrams 6a.
6.1 Mains Power Connection
Danley DSA amplifiers incorporate a power factor corrected universal power
supply and can be used with mains input voltage from 100V AC to 240V AC,
50/60Hz. Use the mains cable supplied with the amplifier.
Danley DSA amplifiers incorporate a front panel mounted power button. Press
the button once to switch the amplifier on or off. Ensure that all signal,
GPIO and output connections are made before switching on the amplifier.
6.2 Input Connection
All Danley DSA amplifier models provide four balanced or unbalanced analog
audio inputs and a stereo S/PDIF digital audio input. Any input channel can be
routed to any output channel. Input routing options can be configured via the
Control Web App Input Tab. See Section 5 of this manual.
Analog Inputs Danley DSA analog inputs are of line level format with a default
input sensitivity of +4dBu (full output voltage swing/sensitivity) in all
output modes. Depending on the selected sensitivity, the inputs can handle up
to +24dBu without clipping. Input sensitivity options can be set via the
Control Web App Input Tab. See Section 5 of this manual.
Balanced input connections to the amplifiers are made via male `Euro Block’
connectors. Connecting cables to the supplied female input connectors is
illustrated in Diagram 6b.
Unbalanced input connections to the amplifiers are made via RCA phono sockets
connected in parallel with the balanced inputs.
Digital Inputs Danley DSA S/PDIF stereo digital audio input connections are
made via a single RCA Phono socket. The S/PDIF input is connected by default
to amplifier installation Zones A (left) and B (right).
Digital Outputs Danley DSA S/PDIF stereo digital audio output connections are
made via a single RCA Phono socket. The S/PDIF output signal by default
reflects the input to amplifier installation Zones A and B and is intended to
be used for daisy-chaining Danley DSA amplifiers.
Note: 75 RCA Phono cables specifically intended for digital audio should
always be used for S/PDIF connections. Standard Phono cables can be used but
may not result in optimal performance.
Note: The S/PDIF output level is by default set at -10dB to reduce the
possibility of downstream input clipping.
6.3 Output Connections
Output connections from the amplifiers are achieved via male `Euro Block’
connectors. Ensure that speaker connection polarity is correct throughout the
installation:
In the case of Lo-Z speaker connections, positive (+) amplifier terminals
should always be connected to positive speaker terminals and negative ()
amplifier terminals always connected to negative speaker terminals.
In the case of Hi-Z speaker connections, the two speaker cable conductors
should be connected between the positive (+) terminal of Output 1 and the
negative terminal (-) of Output 2, and likewise for Outputs 3 and 4.
Output mode options (Lo-Z or Hi-Z) can be configured via the Control Web App
Input Tab. See Section 5 of this manual.
Connecting cables to the supplied female output connector is illustrated in
Diagram 6c.
Diagram 6a Danley DSA rear panel connections.
Note: Two output amplifier model connection sockets differ only in the
deletion of channel 3 and channel 4 output connectors.
Connections
6.4 Speaker Cable Gauge
Danley DSA speaker connection cable gauge should be chosen appropriately to
reflect the type of installation. The adjacent tables specify the appropriate
cable gauge and maximum cable length for less than 0.5dB cable loss in Lo-Z
mode and less than 1.0dB cable loss in Hi-Z mode.
6.5 GPIO Connections
If any Danley DSA GPIO functionality is required, cables will need to be
connected to the supplied GPIO connector. Connecting cables to the GPIO
connector is illustrated in Diagrams 6d.
6.6 Network Connections
Danley DSA amplifiers are TCP/IP network connected devices that are configured
via a web page based interface. Wired (Ethernet) and wireless (WiFi)
connection options are available. Connecting Danley DSA amplifiers to a TCP/IP
network is described in Section 5 of this manual
Cable Gauge Table Lo-Z installations, 0.5dB attenuation. 2 , 4 & 8 loads
Cable Cross Section (mm2)
0.75
Cable Gauge (AWG)
18
Max Cable Length
(Metres, 2 load)
N/A
Max Cable Length
(Metres, 4 load)
5
Max Cable Length
(Metres, 8 load)
10
1.5
16
5
10
20
2.5
14
8
17
35
4.0
12
14
28
55
Cable Cross Section (mm2) 0.75
1.5
2.0
3.5
Cable Gauge Table 70V Hi-Z installations, 1.0dB attenuation
20 speakers evenly distributed
Cable Gauge (AWG)
18 16 14 12
Max Cable Length Max Cable Length
(Metres),
(Metres),
(1000 W/channel) (1200 W/channel)
25
20
50
40
80
60
125
100
Cable Cross Section (mm2) 0.75
1.5
2.0
3.5
Cable Gauge Table 100V Hi-Z installations, 1.0dB attenuation
20 speakers evenly distributed
Cable Gauge (AWG)
18 16 14 12
Max Cable Length Max Cable Length
(Metres),
(Metres),
(1000 W/channel) (1500 W/channel)
50
30
100
60
160
100
250
160
Diagram 6b Balanced analog input cable connections.
Connections
5 mm
Diagram 6c Output cable connections.
Low-Z Mode 5 mm
5 mm
Hi-Z/BTL Modes
Diagram 6d GPIO cable connections.
Connections
5 mm
The exclamation point printed next to the output terminals of the amplifiers is, in addition to the CLASS 2 WIRING text, intended to alert users to the risk of hazardous voltages. Output connectors that could pose a risk are marked with the exclamation point. Do not touch the output terminals while the amplifier is switched on. Make all connections with the amplifier switched off.
Operation
7. Operation
7.2 Default Reset
Once all connections have been made and configuration options selected, Danley
DSA amplifiers are ready for use. If an input signal above -60dB is present on
any
input, the front panel Input and Standby indicators will illuminate green to
indicate normal amplifier operation. Audio will be heard from any connected
speakers.
Note: Danley DSA amplifiers will by default not wake from Standby Mode unless
an input signal is present, a network `ON’ command is received, or an external
standby switch (or 12V trigger) is operated. Standby behaviour can be
configured via the Power Management menu of the Control Web App Settings Tab.
Danley DSA amplifiers can be returned to their default settings via either the
Control Web App Settings Tab or through the front panel power button.
To reset the amplifier using the front panel power button, follow the steps
below:
· Disconnect the amplifier from mains power.
· Press and hold the front panel power button while simultaneously
reconnecting mains power.
· Continue to hold the front panel power button for 3 to 5 seconds as the
amplifier restarts.
Amplifier outputs will mute if no input signal is present for 5 minutes, and the amplifier will switch automatically to Standby Mode if no signal is present on any input for more than 15 minutes. Alternative standby and mute delay times can selected via the Settings Tab. Amplifier cooling fan speed is temperature controlled. The fan will switch off when the amplifier enters standby mode.
The amplifier will restart with all settings at their default state. Any previously configured settings will be deleted.
7.1 Front Panel Indicators
Danley DSA amplifier front panel indicators illuminate to indicate the following operational states:
Status:
Off Mains power disconnected. Green Amplifier operational. Pulse Green Standby Mode. Amber GPIO triggered Standby Mode
Input:
Off No input signal present. Green Signal present on one or more inputs. Amber Signal limiting/clipping on one or more inputs.
Output:
Off No output signal present. Green Signal present on one or more outputs.
Amber Signal limiting/clipping on one or more
outputs. Red One or more channel pair is in overload/protection mode.
Network: Off No Ethernet network detected. Green Ethernet network detected.
WiFi:
Off WiFi disabled. Green WiFi enabled.
Specifications
Model Channels Output Power @ 2 Output Power @ 4
Output Power @ 8 Output Power @ 70V Output Power @ 100V Total System Power
Power Consumption
Output Voltage
Weight
DSA500X4
4 x Lo-Z/2 x Hi-Z
4 x 500 W (SE)
4 x 500 W (SE) 2 x 1000 W (BTL)
4 x 250 W (SE) 2 x 1000 W (BTL)
2 x 1000 W (BTL)
2 x 1000 W (BTL)
2000 W
700 W
65 Vp / 130 Vpp (SE unloaded) 130 Vp / 260 Vpp (BTL unloaded)
7.4 kg
DSA750X4
4 x Lo-Z/2 x Hi-Z
4 x 750 W (SE)
4 x 750 W (SE) 2 x 1500 W (BTL)
4 x 400 W (SE) 2 x 1500 W (BTL)
2 x 1200 W (BTL)
2 x 1500 W (BTL)
3000 W
700 W
80 Vp / 160 Vpp (SE unloaded) 160 Vp / 320 Vpp (BTL unloaded)
7.4 kg
Dimensions
Output Circuitry Signal To Noise-Ratio THD+N (typical) Frequency Response
Protection Circuits
Power Supply
Operating temperature Operating Voltage/ Frequency Standby Consumption
Accessories Power Ratings
88 x 440 x 332 mm (3.5 x 17.3 x 13.1 in) UMACTM Class D – full bandwidth PWM
modulator with ultra-low distortion >108 dB (A-weighted, 20 Hz-20 kHz, 8 load)
< 0.05 % (20 Hz-20 kHz, 8 load, 3 dB below rated power) 20 Hz-20 kHz (+0/-0.5
dB (8 load, 3 dB below rated power) Short circuit -, DC -, Undervoltage -,
Temperature – and Overload protection URECTM universal mains switch mode power
supply with Power Factor Correction (PFC) and standby converter
0-40° C
Universal Mains, 100 V-240 V, 50 Hz-60 Hz
<0.5 W 2x rack ears, 4 x adhesive feet 1 % THD @ 120 Vac and 230 Vac
*SE conventional, single ended output mode **BTL bridge-tied load output mode
Rev A/04/2022
References
Read User Manual Online (PDF format)
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