the t racks DSP 4×4 Amp Controller User Manual
- June 15, 2024
- the t racks
Table of Contents
DSP 4×4 Amp Controller
Specifications
-
Product Name: DSP 4×4 Amp 4.250, DSP 4×4 Amp100V
Controller -
Model Numbers: DSP 4×4 Amp 4.250, DSP 4×4 Amp100V
-
Date of Manufacture: 24.11.2023
-
ID Numbers: 555931, 555941
General Information
This document contains important instructions for the safe
operation of the product. Read and follow the safety instructions
and all other instructions. Keep the document for future reference.
Make sure that it is available to all those using the product. If
you sell the product to another user, be sure that they also
receive this document.
Our products and documentation are subject to a process of
continuous development. They are therefore subject to change.
Please refer to the latest version of the documentation, which is
ready for download under www.thomann.de.
Symbols and Signal Words
| Signal Word | Meaning |
|---|---|
| DANGER! | This combination of symbol and signal word indicates an |
immediate dangerous situation that will result in death or serious
injury if it is not avoided.
NOTICE!| This combination of symbol and signal word indicates a possible
dangerous situation that can result in material and environmental
damage if it is not avoided.
Safety Instructions
Intended Use
This device is intended to be used for amplification, mixing,
and playback of signals from musical instruments and microphones.
Use the device only as described in this user manual. Any other use
or use under other operating conditions is considered to be
improper and may result in personal injury or property damage. No
liability will be assumed for damages resulting from improper
use.
This device may be used only by persons with sufficient
physical, sensorial, and intellectual abilities and having
corresponding knowledge and experience. Other persons may use this
device only if they are supervised or instructed by a person who is
responsible for their safety.
Safety
DANGER!
Risk of injury and choking hazard for children!
DANGER!
Danger to life due to electric current!
A short circuit could lead to a fire hazard and risk of death.
Always use proper ready-made insulated triple-core mains cable with
a safety plug. Do not modify the mains cable or the plug. In case
of isolation damage, disconnect immediately the power supply and
arrange repair. If in doubt, seek advice from a qualified
electrician.
Features
DSP 4×4 Amp 4.250
DSP 4×4 Amp100V
Product Usage Instructions
FAQ
User Manual
DSP 4×4 Amp 4.250, DSP 4×4 Amp100V
Controller
Thomann GmbH Hans-Thomann-Straße 1 96138 Burgebrach Germany Telephone: +49 (0)
9546 9223-0 Internet: www.thomann.de
24.11.2023, ID: 555931, 555941
Table of contents
Table of contents
1 General information………………………………………………………………………………………………………………… 5 1.1 Symbols
and signal words………………………………………………………………………………………………… 5
2 Safety instructions……………………………………………………………………………………………………………………. 7 3
Features………………………………………………………………………………………………………………………………………. 9 4 Installation
and starting up…………………………………………………………………………………………………. 11 5 Connections and
controls……………………………………………………………………………………………………. 12 6 Operating on a
PC………………………………………………………………………………………………………………….. 15 7 Technical
specifications……………………………………………………………………………………………………….. 31 8 Plug and pin
assignments……………………………………………………………………………………………………. 37 9 Protecting the
environment……………………………………………………………………………………………….. 39
3 DSP 4×4 Amp 4.250, DSP 4×4 Amp100V
Controller
4 DSP 4×4 Amp 4.250, DSP 4×4 Amp100V Controller
General information
1 General information
This document contains important instructions for the safe operation of the
product. Read and follow the safety instructions and all other instructions.
Keep the document for future refer- ence. Make sure that it is available to
all those using the product. If you sell the product to another user, be sure
that they also receive this document.
Our products and documentation are subject to a process of continuous
development. They are therefore subject to change. Please refer to the latest
version of the documentation, which is ready for download under
www.thomann.de.
1.1 Symbols and signal words
In this section you will find an overview of the meaning of symbols and signal words that are used in this document.
Signal word DANGER!
NOTICE!
Meaning
This combination of symbol and signal word indicates an immediate dangerous
situation that will result in death or serious injury if it is not avoided.
This combination of symbol and signal word indicates a pos- sible dangerous
situation that can result in material and environmental damage if it is not
avoided.
5 DSP 4×4 Amp 4.250, DSP 4×4 Amp100V
Controller
General information
Warning signs
Type of danger Warning high-voltage.
Warning danger zone.
6 DSP 4×4 Amp 4.250, DSP 4×4 Amp100V Controller
Safety instructions
2 Safety instructions
Intended use
This device is intended to be used for amplification, mixing and playback of
signals from musical instruments and microphones. Use the device only as
described in this user manual. Any other use or use under other operating
conditions is considered to be improper and may result in personal injury or
property damage. No liability will be assumed for damages resulting from
improper use.
This device may be used only by persons with sufficient physical, sensorial,
and intellectual abilities and having corresponding knowledge and experience.
Other persons may use this device only if they are supervised or instructed by
a person who is responsible for their safety.
Safety
DANGER!
Risk of injury and choking hazard for children!
Children can suffocate on packaging material and small parts. Children can
injure themselves when handling the device. Never allow children to play with
the packaging material and the device. Always store packaging material out of
the reach of babies and small children. Always dispose of packaging material
properly when it is not in use. Never allow children to use the device without
supervi- sion. Keep small parts away from children and make sure that the
device does not shed any small parts (such knobs) that children could play
with.
DANGER!
Danger to life due to electric current!
A short circuit could lead to a fire hazard and risk of death. Always use
proper ready-made insulated triple-core mains cable with a safety plug. Do not
modify the mains cable or the plug. In case of isolation damage, disconnect
immediately the power supply and arrange repair. If in doubt, seek advice from
a qualified electrician.
7 DSP 4×4 Amp 4.250, DSP 4×4 Amp100V
Controller
Safety instructions
DANGER! Danger to life due to electric current! Within the device there are
areas where high voltages may be present. Never remove any covers. There are
no user-serviceable parts inside. Do not use the device when covers, safety
equipment or optical components are missing or damaged. DANGER! Risk of death
from electrical current! The output voltages of modern high-performance
amplifiers may result in death or serious injury. Never touch the bare ends of
loud- speaker cables when the amplifier is on. NOTICE! Risk of fire due to
covered vents and neighbouring heat sources! If the vents of the device are
covered or the device is operated in the immediate vicinity of other heat
sources, the device can over- heat and burst into flames. Never cover the
device or the vents. Do not install the device in the immediate vicinity of
other heat sources. Never operate the device in the immediate vicinity of
naked flames. NOTICE! Damage to the device if operated in unsuitable ambient
conditions! The device can be damaged if it is operated in unsuitable ambient
conditions. Only operate the device indoors within the ambient conditions
specified in the “Technical specifications” chapter of this user manual. Avoid
operating it in environments with direct sun- light, heavy dirt and strong
vibrations. Avoid operating it in environments with strong temperature
fluctuations. If temperature fluc- tuations cannot be avoided (for example
after transport in low outside temperatures), do not switch on the device
immediately. Never subject the device to liquids or moisture. Never move the
device to another location while it is in operation. In environments with
increased dirt levels (for example due to dust, smoke, nicotine or mist): Have
the device cleaned by qualified specialists at reg- ular intervals to prevent
damage due to overheating and other malfunctions.
8 DSP 4×4 Amp 4.250, DSP 4×4 Amp100V Controller
3 Features
DSP 4×4 Amp 4.250
Features
n 4-channel DSP installation power amplifier n Front-side power switch n 4 ×
250 W into 8 ohms or 4 × 350 W into 4 ohms n Programming via USB n 3 front-
side buttons for preset switching n 3 rear-side contact inputs via screw
terminals for preset switching n Inputs: 4 × XLR (balanced) n Outputs: 4 ×
Speaker Twist and 4 × 6.35 mm (1/4-inch) TRS jack (pre-out) n Frequency
response: 20 Hz…20 kHz n Class-D power amplifier
9 DSP 4×4 Amp 4.250, DSP 4×4 Amp100V
Controller
Features
DSP 4×4 Amp100V
n 4-channel DSP installation power amplifier n Front-side power switch n 4 × 40 W into 8 ohms n Programming via USB n 3 front-side buttons for preset switching n 3 rear-side contact inputs via screw terminals for preset switching n Inputs: 4 × XLR (balanced) n Outputs: 4 × screw terminals and 4 × 6.35 mm (1/4-inch) TRS jack (pre-out) n Frequency response: 20 Hz…20 kHz n Class-D power amplifier
10 DSP 4×4 Amp 4.250, DSP 4×4 Amp100V Controller
Installation and starting up
4 Installation and starting up
Unpack and check carefully there is no transportation damage before using the
unit. Keep the equipment packaging. To fully protect the product against
vibration, dust and moisture during transportation or storage use the original
packaging or your own packaging material suitable for transport or storage,
respectively.
Create all connections while the device is off. Use the shortest possible high-quality cables for all connections. Take care when running the cables to prevent tripping hazards.
Configuration example
The figure schematically shows how the device can be controlled via a computer’s USB port.
11 DSP 4×4 Amp 4.250, DSP 4×4 Amp100V
Controller
Connections and controls
5 Connections and controls
Front
ö#$
%
&
‘(
1
[CLIP] LED for each channel | The LED lights up when the signal on the respective input is overloading.
2
[SIG] LEDs for each channel | The LED lights up when a signal is present at the respective input.
3
Rotary control [CH 1]…[CH 4] | Controls the output level of the corresponding channel.
4
Buttons [U01], [U02], [U03] | Buttons for calling up the presets. Press and hold the button for 2 seconds to call them up.
5
[USB] | USB interface for connecting to a PC
6
[POWER] | The LED lights when the device is on.
7
[POWER] button | Button for switching on and off
12 DSP 4×4 Amp 4.250, DSP 4×4 Amp100V Controller
Back
) *+
,
Connections and controls -.
DSP 4×4 Amp 4.250
8
Connection for the power cable
9
Screw terminal strip for switching the presets. The relevant preset is called up through potential-free bridging of pins
[Gnd] and [U01]…[U03] for 2 seconds.
10 Switch to toggle the supply voltage
11 [AMP OUT] | Outputs [CH1]…[CH4], designed as Speaker Twist
12 [PRE OUT] | Outputs [1]…[4], designed as 6.35 mm (1/4-inch) jack sockets (mono, balanced)
13 [INPUT] | Inputs [CH1]…[CH4], designed as XLR (mono, balanced)
13 DSP 4×4 Amp 4.250, DSP 4×4 Amp100V
Controller
Connections and controls )
+, –
DSP 4×4 Amp100V
8
Connection for the power cable
9
[MODE] | Screw terminal strip for switching the presets. The relevant preset is called up through potential-free bridging of
pins [Gnd] and [U01]…[U03].
10 [AMP OUT] | 100 V outputs [CH 1]…[CH 4], designed as screw terminal strip
11 [PRE OUT] | Outputs [1]…[4], designed as 6.35 mm (1/4-inch) jack sockets (mono, balanced)
12 [INPUT] | Inputs [CH1]…[CH4], designed as XLR (mono, balanced)
14 DSP 4×4 Amp 4.250, DSP 4×4 Amp100V Controller
Operating on a PC
6 Operating on a PC
Install and start the software.
1. Insert the software CD into the disk drive of your Windows PC and start
the installation programme that matches the device version.
2. Follow the instructions of the installation programme to completion. 3.
Connect your PC to the device via a USB cable and turn on the device.
ð The operating system detects the newly added USB device.
4. Open the PC programme. It automatically detects the connected device. ð In
the upper right corner of the programme window the marking `Online’ appears.
Exiting the software
1. Click the `Online’ button in the programme window. 2. Close the programme window.
15 DSP 4×4 Amp 4.250, DSP 4×4 Amp100V
Controller
Operating on a PC
Components of the programme window
All tabs of the programme window have a similar structure and are divided into the following areas:
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%
& ‘
1
Tab for selecting a function group
2
Main menu
3
Button for the status of the connection to the PC
16 DSP 4×4 Amp 4.250, DSP 4×4 Amp100V Controller
Operating on a PC
4
Display area
5
Control area
6
Buttons for quick access to important presets
Main menu Menu item File’Link’ Copy’Lock’ Test Tone’Language’ `About’
Meaning Loading user presets and saving them on the PC Assignment of input to output channels Copying parameter settings from one input or output channel to another Changing device password Setting the internal test tone generator: pink noise, white noise, sine wave 20 Hz…20 kHz Selecting the language for the user interface of the programme (English or German) Information about the programme version
17 DSP 4×4 Amp 4.250, DSP 4×4 Amp100V
Controller
Operating on a PC
Buttons for quick access to important presets
Area Address’Preset’ Store’Recall’
Meaning Display of the marking of the device Display of the current user’s preset Saving a user preset Recalling a user preset
18 DSP 4×4 Amp 4.250, DSP 4×4 Amp100V Controller
“Gain” tab
Operating on a PC
19 DSP 4×4 Amp 4.250, DSP 4×4 Amp100V
Controller
Operating on a PC
Area Display area
Control area
Meaning
Indicates the waveform of the input and output channels. Use the radio buttons
Inx’ andOutx’ to determine the inputs and outputs to be displayed.
Drag the faders with the mouse to adjust the levels for the input and output
channels. The Mute’ button mutes or unmutes the respective channel. The Normal’ / `Inverse’ button inverts the phase of the respective channel by
180° when needed.
20 DSP 4×4 Amp 4.250, DSP 4×4 Amp100V Controller
“Gate” tab
Operating on a PC
21 DSP 4×4 Amp 4.250, DSP 4×4 Amp100V
Controller
Operating on a PC
Area Display area
Control area
Meaning
Shows the current settings of the noise gate for the respective channel, with
a symbolic level indicator symbol appearing next to it for the input channels.
The red dot represents the threshold level at which the noise gate opens.
Drag the faders with the mouse to set the noise gate parameters for all input
and output channels: Threshold, hold, attack, release
22 DSP 4×4 Amp 4.250, DSP 4×4 Amp100V Controller
“Comp” tab
Operating on a PC
23 DSP 4×4 Amp 4.250, DSP 4×4 Amp100V
Controller
Operating on a PC
Area Display area
Control area
Meaning
Shows the current settings of the compressor function for the respective
output channel, with a sym- bolic level indicator symbol appearing next to it
for all output channels. The red dot marks the threshold from which the
compressor operates.
Drag the faders with the mouse to set the compressor parameters for the output
channels: Threshold, ratio, knee, attack, release
24 DSP 4×4 Amp 4.250, DSP 4×4 Amp100V Controller
“Delay” tab
Operating on a PC
25 DSP 4×4 Amp 4.250, DSP 4×4 Amp100V
Controller
Operating on a PC
Area Display area Control area
Meaning
Shows the set delays for all output channels.
Drag the faders with the mouse to adjust the delay for the respective channel.
In the `Unit’ area, you can select the measuring unit milliseconds (ms),
meters (m) or feet (ft).
26 DSP 4×4 Amp 4.250, DSP 4×4 Amp100V Controller
“Matrix” tab
Operating on a PC
27 DSP 4×4 Amp 4.250, DSP 4×4 Amp100V
Controller
Operating on a PC
Area Display area
Control area
Meaning
Shows the current interconnection of input to output channels.
Input and output channels can be renamed. Click on a function area (such as
PEQ’ orDELAY’ ) to open the tab. Here you can enter the corresponding
parameters directly.
With a mouse click you can interconnect each input with each output channel.
To each output channel, an input channel or the mix of several input channels
can be freely assigned. The green input channels are assigned to the
respective output channel. You can adjust the level for each combination of
input and output channel.
28 DSP 4×4 Amp 4.250, DSP 4×4 Amp100V Controller
Tabs “Out 1” “`Out 4″
Operating on a PC
29 DSP 4×4 Amp 4.250, DSP 4×4 Amp100V
Controller
Operating on a PC
Area Display area
Control area
Meaning
Use the radio buttons Mag’ orPhase’ to switch the diagram from Cartesian
coordinates (level vs. fre- quency) to polar coordinates (angle vs.
frequency).
Use the radio button SHOW ALL EQ’ to show the parameters for all seven of the frequency bands. The corner points of the equalizer can be moved in the display area with the mouse. You can enter the parameters of the parametric equalizer for each input channel and all seven fre- quency bands (numbered withPEQ’ ) in the left
part of the window directly as numerical values: Centre frequency, filter
quality, slope, filter type. With the Bypass’ button, the equalizer for the respective fre- quency band and the respective channel can be turned off temporarily. In the middle part of the window (PEQ Parameter’ ) you can set the
parameters centre frequency, filter quality, and slope using the faders. The
setting refers to the frequency band that is highlighted green in the left
part of the window.
You can select the cut-off frequency and the filter type for the low pass and
the high pass filter. Use the Bypass’ button to temporarily turn off the filter. Drag the fader in the right part of the window using the mouse to set the level for the input channel. TheMute’ button mutes or unmutes the respective
channel. The Normal’ /Inverse’ button inverts the phase of the respective
channel by 180° when needed.
30 DSP 4×4 Amp 4.250, DSP 4×4 Amp100V Controller
7 Technical specifications
DSP 4×4 Amp 4.250 Amp class Input connections
Power supply USB interface Audio signal
Output connections
Audio signal
D IEC chassis plug C14 1 × USB-B Type Level Impedance Type
Output power
Level Impedance 8 4
Technical specifications
4 × XLR (mono, balanced) +12 dBu 20 k (balanced), 10 k (unbalanced) 4 ×
Speaker Twist (balanced, Amp Out) 4 × 6.35 mm (1/4-inch) jack socket (mono,
balanced, Pre Out) +35 dBu < 500 4 × 250 W RMS 4 × 350 W RMS
31 DSP 4×4 Amp 4.250, DSP 4×4 Amp100V
Controller
Technical specifications
Frequency response
Signal-to-noise ratio Total harmonic distortion (THD) Crosstalk
Digital signal processing
Supply voltage Dimensions (W × H × D) Weight Ambient conditions
20 Hz…20 kHz 0.3 dB
105 dBu
< 0.03 % (1 kHz, 10 dBu, 4 )
70 dBu 20 Hz…20 kHz
Digital signal processor
32 bit
A/D-D/A converter
24 bit
Sampling rate
48 kHz
230 V 50 Hz
482 mm × 44 mm × 339 mm | 1 RU
5.8 kg
Temperature range
0 °C…40 °C
Relative humidity
20 %…80 %, non-condensing
32 DSP 4×4 Amp 4.250, DSP 4×4 Amp100V Controller
Further information
2-way stereo
Yes
3-way stereo
No
Digital
Yes
Delay
Yes
EQ
Yes
Limiter
Yes
Computer remote
Yes
Suitable for rack mounting
Yes
Bridged operation
No
Temperature-controlled fan
Yes
Convection cooling
No
Technical specifications
33 DSP 4×4 Amp 4.250, DSP 4×4 Amp100V
Controller
Technical specifications
DSP 4×4 Amp 100V Amp class Input connections
Power supply USB interface Audio signal
Output connections
Audio signal
Output power Frequency response Signal-to-noise ratio
34 DSP 4×4 Amp 4.250, DSP 4×4 Amp100V Controller
D IEC chassis plug C14 1 × USB-B Type Level Impedance Type
Level Impedance 200
20 Hz…20 kHz 0.3 dB > 105 dBu
4 × XLR (mono, balanced) +12 dBu 20 k (balanced), 10 k (unbalanced) Screw terminal strip 4 × 6.35 mm (1/4-inch) jack socket (mono, balanced, Pre Out) +43 dBu 100 4 × 40 W RMS (89 V) 4 × 50 W RMS (100 V)
Total harmonic distortion (THD) Crosstalk
Digital signal processing
Supply voltage Dimensions (W × H × D) Weight Ambient conditions
Technical specifications
< 0.03 % (1 kHz, 10 dBu, 200 )
70 dBu 20 Hz…20 kHz
Digital signal processor
32 bit
A/D-D/A converter
24 bit
Sampling rate
48 kHz
230 V 50 Hz
482 mm × 44 mm × 339 mm | 1 RU
8.1 kg
Temperature range
0 °C…40 °C
Relative humidity
20 %…80 %, non-condensing
35 DSP 4×4 Amp 4.250, DSP 4×4 Amp100V
Controller
Technical specifications
Further information
2-way stereo
Yes
3-way stereo
No
Digital
Yes
Delay
Yes
EQ
Yes
Limiter
Yes
Computer remote
Yes
Suitable for rack mounting
Yes
Bridged operation
No
Temperature-controlled fan
No
Convection cooling
Yes
36 DSP 4×4 Amp 4.250, DSP 4×4 Amp100V Controller
Plug and pin assignments
8 Plug and pin assignments
Introduction
This chapter will help you select the right cables and plugs to connect your
valuable equip- ment in such a way that a perfect sound experience is ensured.
Please note these advices, because especially in Sound & Light’ caution is indicated: Even if a plug fits into the socket, an incorrect connection may result in a destroyed power amp, a short circuit orjust’ in poor
transmission quality!
XLR plug (balanced)
1
Ground, shielding
2
Signal (in phase, +)
3
Signal (out of phase, )
4
Shielding on plug housing (option)
37 DSP 4×4 Amp 4.250, DSP 4×4 Amp100V
Controller
Plug and pin assignments
1/4” TRS phone plug (mono, bal- anced)
1 2 3
Speaker Twist chassis connector
1, +
1,
2, +
2,
ö
Signal (in phase, +) Signal (out of phase, ) Ground
Signal 1 (in phase) Signal 1 (out of phase) Signal 2 (in phase) Signal 2 (out
of phase)
38 DSP 4×4 Amp 4.250, DSP 4×4 Amp100V Controller
Protecting the environment
9 Protecting the environment
Disposal of the packaging mate- rial
For the transport and protective packaging, environmentally friendly materials
have been chosen that can be supplied to normal recycling.
Ensure that plastic bags, packaging, etc. are properly disposed of.
Do not just dispose of these materials with your normal household waste, but
make sure that they are collected for recycling. Please follow the notes and
markings on the packaging.
Disposal of your old device
This product is subject to the European Waste Electrical and Electronic
Equipment Directive (WEEE) in its currently valid version. Do not dispose with
your normal household waste.
Dispose of this device through an approved waste disposal firm or through your
local waste facility. When discarding the device, comply with the rules and
regulations that apply in your country. If in doubt, consult your local waste
disposal facility.
39 DSP 4×4 Amp 4.250, DSP 4×4 Amp100V
Controller
Notes
40 DSP 4×4 Amp 4.250, DSP 4×4 Amp100V Controller
Notes
41 DSP 4×4 Amp 4.250, DSP 4×4 Amp100V
Controller
Notes
42 DSP 4×4 Amp 4.250, DSP 4×4 Amp100V Controller
Musikhaus Thomann · Hans-Thomann-Straße 1 · 96138 Burgebrach · Germany · www.thomann.de
References
Read User Manual Online (PDF format)
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