thomann DSP 26 User Manual

DSP 26

digital speaker

management system

user manual

Musikhaus Thomann
Thomann GmbH
Hans-Thomann-Straße 1
96138 Burgebrach
Germany
Telephone: [phone]
E-mail: [e-mail]
Internet: www.thomann.de

30.01.2017, ID: 341074

Table of contents

1 General notes............................................................................................................................................... 5

1.1 Further information........................................................................................................................... 6

1.2 Notational conventions.................................................................................................................... 7

1.3 Symbols and signal words............................................................................................................... 8

2 Safety notes............................................................................................................................................... 10

3 Features....................................................................................................................................................... 14

4 Installation and starting up................................................................................................................ 15

5 Connections and controls................................................................................................................... 16

6 Operating.................................................................................................................................................... 21

6.1 UTILITY menu.................................................................................................................................... 22

6.2 INPUT A/B menu............................................................................................................................... 34

6.3 OUTPUT 1/2/3/4/5/6 menu.......................................................................................................... 38

6.4 Channel linkage................................................................................................................................ 45

6.5 Reset to factory defaults................................................................................................................ 46

7 Technical specifications....................................................................................................................... 47

Table of contents

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8 Plug and connection assignment.................................................................................................... 49

9 Cleaning....................................................................................................................................................... 51

10 Protecting the environment.............................................................................................................. 52

Table of contents

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1 General notes

This manual contains important instructions for the safe operation of the unit. Read and follow
the safety instructions and all other instructions. Keep the manual for future reference. Make
sure that it is available to all those using the device. If you sell the unit please make sure that
the buyer also receives this manual.

Our products are subject to a process of continuous development. Thus, they are subject to
change.

General notes

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1.1 Further information

On our website (www.thomann.de) you will find lots of further information and details on the
following points:

Download This manual is also available as PDF file for you to download.

Keyword search

Use the search function in the electronic version to find the topics of
interest for you quickly.

Online guides

Our online guides provide detailed information on technical basics
and terms.

Personal consultation For personal consultation please contact our technical hotline.

Service

If you have any problems with the device the customer service will
gladly assist you.

General notes

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6

1.2 Notational conventions

This manual uses the following notational conventions:

The letterings for connectors and controls are marked by square brackets and italics.
Examples: [VOLUME] control, [Mono] button.

Texts and values displayed on the device are marked by quotation marks and italics.
Examples: ‘24ch’ , ‘OFF’.

References to other locations in this manual are identified by an arrow and the specified page
number. In the electronic version of the manual, you can click the cross-reference to jump to
the specified location.

Example: See

Ä

‘Cross-references’ on page 7.

Letterings

Displays

Cross-references

General notes

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7

1.3 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 manual.

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.

CAUTION! This combination of symbol and signal word indicates a pos‐

sible dangerous situation that can result in minor injury if it
is not avoided.

NOTICE! 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.

General notes

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Warning signs Type of danger

Warning – high-voltage.

Warning – danger zone.

General notes

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2 Safety notes

This device serves sound control and distribution of incoming audio signals to the connected
speakers. 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.

DANGER!
Danger for children

Ensure that plastic bags, packaging, etc. are disposed of properly and are not
within reach of babies and young children. Choking hazard!

Ensure that children do not detach any small parts (e.g. knobs or the like) from
the unit. They could swallow the pieces and choke!

Never let children unattended use electrical devices.

Intended use

Safety

Safety notes

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DANGER!
Electric shock caused by high voltages inside

Within the device there are areas where high voltages may be present. Never
remove any covers.

There are no user-serviceable parts inside.

DANGER!
Electric shock caused by short-circuit

Always use proper ready-made insulated mains cabling (power cord) with a pro‐
tective contact plug. Do not modify the mains cable or the plug. Failure to do so
could result in electric shock/death or fire. If in doubt, seek advice from a regis‐
tered electrician.

Safety notes

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11

CAUTION!
Possible hearing damage

With loudspeakers or headphones connected, the device can produce volume
levels that may cause temporary or permanent hearing impairment.

Do not operate the device permanently at a high volume level. Decrease the
volume level immediately if you experience ringing in your ears or hearing
impairment.

NOTICE!
Risk of fire

Do not cover the device nor any ventilation slots. Do not place the device near
any direct heat source. Keep the device away from naked flames.

Safety notes

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NOTICE!
Operating conditions

This device has been designed for indoor use only. To prevent damage, never
expose the device to any liquid or moisture. Avoid direct sunlight, heavy dirt, and
strong vibrations.

NOTICE!
Power supply

Before connecting the device, ensure that the input voltage (AC outlet) matches
the voltage rating of the device and that the AC outlet is protected by a residual
current circuit breaker. Failure to do so could result in damage to the device and
possibly injure the user.

Unplug the device before electrical storms occur and when it is unused for long
periods of time to reduce the risk of electric shock or fire.

Safety notes

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3 Features

n Two input channels
n Six output channels
n Digital 24-bit signal processors
n RS485 interface
n USB port
n Suitable for installation in 19-inch racks (1 RU)

Features

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4 Installation and starting up

Unpack and carefully check that there is no transportation damage before using the unit. Keep
the equipment packaging. To fully protect the device against vibration, dust and moisture
during transportation or storage use the original packaging or your own packaging material
suitable for transport or storage, respectively.

Establish all connections as long as the unit is switched off. Use the shortest possible high­quality cables for all connections.

The unit has been designed for rack mounting in a standard 19-inch rack; it occupies one rack
unit.

Rack mounting

Installation and starting up

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5 Connections and controls

Front panel

Connections and controls

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1 Display
2 [NAV/PM1]

Rotary switch for setting of values in submenus.

3 [PM2]

Rotary switch for setting of values in submenus.

4 [PM3]

Rotary switch for setting of values in submenus.

5 [ENTER]

Button to confirm changes and input values.

6 [ESC]

Button to exit an open menu or a menu function.

7 [UTILITY]

Button to open the menu for setting the device parameters.

Connections and controls

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8 LED display input channel A / B

The LEDs show the level of the input signal.
[A], [B]

Briefly pressing the button activates the edit mode for the input channel A and/or B, and the corresponding [EDIT]
LED lights up blue. Changes always affect all active channels.

Hold down the buttons for a second to mute the input channel A or B. In this case, the [MUTE] LED lights up red.
Hold down the buttons again for a second to switch the input channel A or B back on. The [MUTE] LED goes out.

9 LED display output channel 1 to 6

The LEDs show the level of the input signal or the response of the limiter.
[1] … [6]

Briefly pressing the button activates the edit mode for the output channel 1 … 6. In this case, the [EDIT] LED lights up.
Changes always affect all active channels.

Hold down the buttons for a second to mute the output channel 1 … 6. In this case, the [MUTE] LED lights up red.
Hold down the buttons for a second to switch the output channel 1 … 6 back on. The [MUTE] LED goes out.

10 USB port

Connections and controls

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Rear panel

Connections and controls

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11 Mains switch to turn the device on and off.
12 IEC chassis plug with fuse holder for the power supply.
13 [MAIN | LIFT | GND]

Switch to disconnect the signal ground from the chassis ground to avoid hum loops.

14 [RS485 OUT | IN]

RS485 interface with output for looping through the signal to other devices.

15 [USB/RS485 | LIFT | GND]

Switch to disconnect the signal ground from the USB or RS485 interface to avoid hum loops.

16 [OUTPUTS]

Signal output 6 to 1 (XLR panel connector).

17 [INPUTS]

Signal input B and A (XLR panel socket).

Connections and controls

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6 Operating

First switch on the speaker management system and then switch on the connected
devices to avoid activation crackling and possible damage to the connected speakers.

When the device is switched on, the model name, the start-up status, and the last active oper‐
ating mode (default: ‘2×3 WAY X-OVER’ ) appear one after another in the display.

Afterwards, there is the option to activate a desired operating mode or to adjust the device
settings.

Operating

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6.1 UTILITY menu

Press [UTILIY] to enter the ‘UTILITY’ menu. Select the required submenu with[NAV/PM1] and
confirm with [ENTER].

Select the required option in the open submenu with[NAV/PM1] and confirm with [ENTER]. The
selected menu item is marked with an asterisk (*).

Adjust the settings with [PM2] or [PM3] and confirm by pressing [ENTER] to apply the new set‐
tings.

Pressing [ESC] exits the menu without applying changes.

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UTILITY menu overview

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This menu is used to select the operating mode. In the [UTILITY] menu, select the ‘System
Utilities’ option and confirm with [ENTER].

Select the ‘System Setup’ menu item and confirm with [ENTER]. The active operating mode is
shown on the display.

Select the required operating mode with [PM2] or [PM3] and confirm by pressing [ENTER] to
apply the new setting.

Operating modes

n ‘2 × 2 WAY + SUB’ – in this operating mode, two inputs are assigned to four outputs as

follows:
– Input A to output 1/3 (1 = Low-A, 3 = High-A)
– Input B to output 2/4 (2 = Low-B, 4 = High-B)
– Input A and B to output 5/6 (5 = Sub-A, 6 = Sub-B)

n ‘2 × 3 WAY.XOVER’ – in this operating mode, two inputs are assigned to six outputs as fol‐

lows:
– Input A to output 1/3/5 (1 = Low-A, 3 = Mid-A, 5 = High-A)
– Input B to output 2/4/6 (2 = Low-B, 4 = Mid-B, 6 = High-B)

n ‘6 WAY.XOVER’ – in this operating mode, input A is assigned to six outputs as follows:

– Input A to output 1/2/3/4/5/6 (1 = Near-1, 2 = Near-2, 3 = Mid-1, 4 = Mid-2, 5 = Far-1, 6

= Far-2)

"System Utilities" – "System
Setup"

Operating

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Pressing [ESC] exits the menu without applying changes.

This menu is used to set the signal delay of the digital speaker management system. In the
[UTILITY] menu, select the ‘System Utilities’ option and confirm with [ENTER].

Select the ‘Delay Units’ menu item and confirm with [ENTER]. The display shows the current
setting.

Press [PM2] or [PM3] to switch between the available units of meters (m) and milliseconds (ms).
Turn [PM2] or [PM3] to set the unit required and confirm by pressing [ENTER] to apply the new

setting.
Pressing [ESC] exits the menu without applying changes.

This menu item is used to display the currently loaded software version. In the [UTILITY] menu,
select the ‘System Utilities’ option and confirm with [ENTER].

Select the ‘Software Version’ menu item and confirm with [ENTER]. The display shows the cur‐
rent software version

"System Utilities" – "Delay
Units"

"System Utilities" - "Software
Version"

Operating

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This menu is used to load stored configurations. A total of 24 storage locations are available for
configurations. In the [UTILITY] menu, select the ‘Program Utilities’ option and confirm with
[ENTER].

Select the ‘Recall a Program’ menu item and confirm with [ENTER].
Select the required entry with [PM2] or [PM3] and confirm by pressing [ENTER] to apply the

new setting.
If there are no configurations stored on the device, the message ‘No Stored Xovers’ is dis‐

played.
Press [ESC] to cancel the operation at any time.

"Program Utilities" - "Recall a
Program"

Operating

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This menu is used to save current device settings as a configuration. A total of 24 storage loca‐
tions are available for configurations. In the [UTILITY] menu, select the ‘Program Utilities’ option
and confirm with [ENTER].

Select the ‘Save a Program’ menu item and confirm with [ENTER].
Select the required storage location with [PM2] or [PM3] and confirm by pressing [ENTER].

Existing records can be overwritten. In this case, a corresponding confirmation prompt
appears on the display. Press [ENTER] to confirm that the settings should be overwritten.

The following screen is used to enter a name under which the configuration is to be stored (up
to 16 characters). Enter letters and numbers with [PM2] or [PM3]. The cursor can be placed in
any position with [NAV/PM1], for example to overwrite a character that has been entered incor‐
rectly.

Use [ENTER] to confirm that the configuration is to be stored under the new name.
Press [ESC] to cancel the operation at any time.

"Program Utilities" - "Save a Pro‐
gram"

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This menu is used to delete stored configurations. In the [UTILITY] menu, select the ‘Program
Utilities’ option and confirm with [ENTER].

Select the ‘Delete a Program’ menu item and confirm with [ENTER].
Highlight the configuration to be deleted with [PM2] or [PM3]. Confirm with [ENTER].
A corresponding confirmation prompt appears on the display. Press [ENTER] to confirm that

the settings should be deleted.
Press [ESC] to cancel the operation at any time.

"Program Utilities" - "Delete a
Program"

Operating

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This menu is used to define which interface is used to control the device.
In the [UTILITY] menu, select the ‘Interface Utilities’ option and confirm with [ENTER].
Select the ‘Interface Setup’ menu item and confirm with [ENTER]. The display shows the current

setting.
Switch between the two available options with [PM2] or [PM3] and confirm by pressing [ENTER]

to apply the new setting.
Interface

n ‘USB’ - This selection establishes a connection to an external device via the USB interface.
n ‘RS485’ - This selection establishes a connection to an external device via the RS485 inter‐

face

Pressing [ESC] exits the menu without applying changes.

"Interface Utilities" - "Interface
Setup"

Operating

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This menu is used to define if the device parameters are displayed or hidden.
In the [UTILITY] menu, select the ‘Security Utilities’ option and confirm with [ENTER].
Select the ‘Show Parameter’ menu item and confirm with [ENTER]. The display shows the cur‐

rent setting.
Switch between the available options with [PM2] or [PM3] and confirm by pressing [ENTER] to

apply the new setting.
Parameter display

n ‘Parameter will be shown’ – This selection displays all device parameters.
n ‘Parameter will not be shown’ – This selection hides all device parameters.

Pressing [ESC] exits the menu without applying changes.

"Security Utilities" - "Show
Parameter"

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This menu is used to define the access rights to the different device parameters.
In the [UTILITY] menu, select the ‘Security Utilities’ option and confirm with [ENTER].
Select the ‘Lock Unit’ menu item and confirm with [ENTER]. The display shows the current set‐

ting.
Switch between the available options with [PM2] or [PM3] and confirm by pressing [ENTER] to

apply the new setting.
Parameter access

n ‘Lock: Off’ - With this selection, all device parameters can be edited without entering a

password.

n ‘Lock: On’ - With this selection, the device parameters can only be accessed after entering

a valid password.

Pressing [ESC] exits the menu without applying changes.

"Security Utilities" – "Lock Unit"

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This menu is used to set a password to control access to the different device parameters.
In the [UTILITY] menu, select the ‘Security Utilities’ option and confirm with [ENTER].
Select the ‘User Password’ menu item and confirm with [ENTER]. The ‘Insert Password’ prompt

appears on the display.
Use [PM2] or [PM3] to enter a password with a maximum of six characters. The cursor can be

placed in any position with [NAV/PM1], for example to overwrite a character that has been
entered incorrectly.

Confirm the input with [ENTER]. The ‘Confirm Password’ prompt appears on the display. Retype
the password for confirmation and confirm with [ENTER], to finally accept the password.

Pressing [ESC] exits the menu without applying changes.

"Security Utilities" - "User Pass‐
word"

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This menu is used to activate or deactivate the password protection of the device.
In the [UTILITY] menu, select the ‘Security Utilities’ option and confirm with [ENTER].
Select the ‘Enable Password’ menu item and confirm with [ENTER]. The display shows the cur‐

rent setting.
Switch between the available options with [PM2] or [PM3] and confirm by pressing [ENTER] to

apply the new setting.
Password protection

n ‘Password: Enable’ - With this selection, the device parameters can only be accessed after

entering a valid password.

n ‘Password: Disable’ - With this selection, all device parameters can be edited without

entering a password.

Pressing [ESC] exits the menu without applying changes.

"Security Utilities" - "Enable
Password"

Operating

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6.2 INPUT A/B menu

Press [A] or [B] to activate the edit mode for channel A or B and to open the ‘INPUT A/B’ menu.
On the device, the [EDIT] display LED of the activated input channel A or B lights up blue. Press
[ENTER]. An arrow is shown on the display. The individual input parameters can now be
adjusted.

Changes always affect all active input channels.
Select the required option with[NAV/PM1] and confirm with [ENTER]. The selected menu item is

marked with an asterisk (*).
Adjust the settings with [PM2] or [PM3] and confirm by pressing [ENTER] to apply the new set‐

tings.
Pressing [ESC] exits the menu without applying changes.

Operating

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INPUT A/B menu overview

Operating

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This menu is used to lower or raise the level of the input signal in a range of –12 dB to +12 dB.
Press [A] or [B] to activate the edit mode for channel A or B and to open the ‘INPUT A/B’ menu.

Use [PM2] or [PM3] to adjust the level of the input signal as required. Confirm the new setting
with [ENTER].

Pressing [ESC] exits the menu without applying changes.

This menu is used to customise the signal delay in a range of 000.0000 ms to 848.9984 ms.
Press [A] or [B] to open the ‘INPUT A/B’ menu.

Press [ENTER] and use [PM2] to roughly adjust the signal delay in increments of 1 ms , or use
[PM3] to finely adjust it in increments of 20.8 ms. Confirm the new setting with [ENTER].

Pressing [ESC] exits the menu without applying changes.

"Gain"

"Delay"

Operating

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This menu is used to activate five shelving filters/bell filters for all inputs. Press [A] or [B] to
open the ‘INPUT A/B’ menu. Set the signal gain (Gain) to zero.

Turn [PM2] in a clockwise direction to activate a bell filter.
Press [ENTER] to open the edit mode and select the following parameters:

n Bypass the EQ with [PM2]: Bypass active if ‘Byp=On’ , bypass inactive if ‘Byp=Off’
n Type of filter: Bell filter ‘Peaking_EQ’ , High Shelving ‘Hi-Shelv_Q’ or Low Shelving ‘Lo-

Shelv_Q’ (Shelving filter)

To adjust the parameters of the selected filter, press [ENTER] again. The following options are
available on this level:

n Frequency range with [NAV/PM1], range ‘20 Hz’ … ‘20 kHz’
n Quality with [PM2], range ‘Q=0.3’ … ‘Q=20’
n Signal enhancement with [PM3], range ‘–15 dB’ … ‘

+

15 dB’

Press [ESC] to return to the filter bypass menu. Press [ENTER] to return to the filter selection.

"EQ-X"

Operating

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6.3 OUTPUT 1/2/3/4/5/6 menu

Press [1], [2], [3], [4], [5] and/or [6], to activate the edit mode for channel 1, 2, 3, 4, 5 and/or 6
and open the ‘OUTPUT 1/2/3/4/5/6’ menu. On the device, the [EDIT] display LED of the acti‐
vated output channel lights up blue. Press [ENTER]. An arrow is shown on the display. The indi‐
vidual output parameters can now be adjusted.

Select the required option with[NAV/PM1] and confirm with [ENTER]. The selected menu item is
marked with an asterisk (*).

Adjust the settings with [PM2] or [PM3] and confirm by pressing [ENTER] to apply the new set‐
tings.

Pressing [ESC] exits the menu without applying changes.

Operating

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1/2/3/4/5/6 menu overview

Operating

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This menu is used to activate a high-pass filter for all outputs. Press [1], [2], [3], [4], [5] and/or [6],
to activate the editing mode for channel 1, 2, 3, 4, 5 and/or 6 and adjust the following parame‐
ters as required:

n Cutoff frequency with [PM2], range ‘20 Hz’ … ‘20 kHz’
n Filter type with [PM3]

– Butterworth, 6 dB, display ‘Butwrth 6dB’
– Butterworth, 12 dB, display ‘Butwrth 12dB’
– Linkwitz/Riley, 12 dB, display ‘Lnk/Ril 12dB’
– Bessel, 12 dB, display ‘Bessel 12dB’
– Butterworth, 18 dB, display ‘Butwrth 18dB’
– Butterworth, 24 dB, display ‘Butwrth 24dB’
– Linkwitz/Riley, 24 dB, display ‘Lnk/Ril 24dB’
– Bessel, 24 dB, display ‘Bessel 24dB’

Pressing [ESC] exits the menu without applying changes.

"HPF"

Operating

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This menu is used to activate a low-pass filter for all outputs. Press [1], [2], [3], [4], [5] and/or [6],
to activate the editing mode for channel 1, 2, 3, 4, 5 and/or 6 and adjust the following parame‐
ters as required:

n Cutoff frequency with [PM2], range ‘20 Hz’ … ‘20 kHz’
n Filter type with [PM3]

– Butterworth, 6 dB, display ‘Butwrth 6dB’
– Butterworth, 12 dB, display ‘Butwrth 12dB’
– Linkwitz/Riley, 12 dB, display ‘Lnk/Ril 12dB’
– Bessel, 12 dB, display ‘Bessel 12dB’
– Butterworth, 18 dB, display ‘Butwrth 18dB’
– Butterworth, 24 dB, display ‘Butwrth 24dB’
– Linkwitz/Riley, 24 dB, display ‘Lnk/Ril 24dB’
– Bessel, 24 dB, display ‘Bessel 24dB’

Pressing [ESC] exits the menu without applying changes.

"LPF"

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This menu is used to activate five shelving filters/bell filters for all outputs. Press [1], [2], [3], [4],
[5] and/or [6], to activate the edit mode for channel 1, 2, 3, 4, 5 and/or 6. Set the signal gain

(Gain) to zero.
Turn [PM2] in a clockwise direction to assign a bell filter.
Press [ENTER] to open the edit mode and select the following parameters:

n Bypass the EQ with [PM2]: Bypass active if ‘Byp=On’ , bypass inactive if ‘Byp=Off’
n Type of filter: Bell filter ‘Peaking_EQ’ , High Shelving ‘Hi-Shelv_Q’ or Low Shelving ‘Lo-

Shelv_Q’ (Shelving filter)

To adjust the parameters of the selected filter, press [ENTER] again. The following options are
available on this level:

n Frequency range with [NAV/PM1], range ‘20 Hz’ … ‘20 kHz’
n Quality with [PM2], range ‘Q=0.3’ … ‘Q=20’
n Signal enhancement with [PM3], range ‘–15 dB’ … ‘

+

15 dB’

Press [ESC] to return to the filter bypass menu. Press [ENTER] to return to the filter selection.

"EQ-X"

Operating

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This menu is used to define the parameters that are visualised by the LEDs of the output chan‐
nels. Press [1], [2], [3], [4], [5] and/or [6], to activate the edit mode for channel 1, 2, 3, 4, 5 and/or

6.
Press [ENTER]and use [NAV/PM1] or [PM2] to switch between the options ‘Limiter Act’ (limiter

response) and ‘Level’ (signal level).
Pressing [ESC] exits the menu without applying changes.

This menu is used to assign an individual name to each output channel. Press [1], [2], [3], [4], [5]
and/or [6], to activate the edit mode for channel 1, 2, 3, 4, 5 and/or 6.

Use [PM2] or [PM3] to enter a desired name with a maximum of six characters. The cursor can
be placed in any position with [NAV/PM1], for example to overwrite a character that has been
entered incorrectly.

Pressing [ESC] exits the menu without applying changes.

This menu is used to adjust the assignment between the input and output channels. Press [1],
[2], [3], [4], [5] and/or [6], to activate the edit mode for channel 1, 2, 3, 4, 5 and/or 6.

Press [ENTER] and assign the required input to the active output with [PM2] or [PM3].
Pressing [ESC] exits the menu without applying changes.

"Vu Meter"

"Name"

"Source"

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This menu is used to lower or raise the level of the output signal on a per channel basis in a
range of –12 dB to +12 dB. Press [1], [2], [3], [4], [5] and/or [6], to activate the edit mode.

Use [PM2] or [PM3] to adjust the level of the output signal as required. Confirm the new setting
with [ENTER].

Pressing [ESC] exits the menu without applying changes.

This menu is used to adjust the limiter function settings on a per channel basis. Press [1], [2],
[3], [4], [5] and/or [6], to activate the edit mode and adjust the following parameters as
required:

n Response time with [NAV/PM1], range ‘5 ms’ … ‘200 ms’
n Ramp-down time with [PM2], range ‘5 ms’ … ‘200 ms’
n Threshold with [PM3], range ‘–10 dB’ … ‘

+

20 dB’

Pressing [ESC] exits the menu without applying changes.

"Gain"

"Limiter"

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This menu is used to customise the signal delay in a range of 000.0000 ms to 848.9984 ms.
Press [1], [2], [3], [4], [5] and/or [6], to activate the edit mode for channel 1, 2, 3, 4, 5 and/or 6.

Press [ENTER] and use [PM2] to roughly adjust the signal delay in increments of 1 ms , or use
[PM3] to finely adjust it in increments of 20.8 ms. Confirm the new setting with [ENTER].

Pressing [ESC] exits the menu without applying changes.

This menu is used to reverse the polarity of the channels. Press [1], [2], [3], [4], [5] and/or [6], to
activate the edit mode for channel 1, 2, 3, 4, 5 and/or 6.

Press [ENTER] and invert the active channel with [NAV/PM2] or [PM2] (Display ‘Normal’ or

‘Inverted’ ).

Pressing [ESC] exits the menu without applying changes.

6.4 Channel linkage

The device offers the option to freely link input and output channels, making it easier to edit
the channel parameters.

"Delay"

"Polarity"

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First edit an input or output channel as required, see Ä Chapter 6.1 ‘UTILITY menu’ on page 22,

Ä

Chapter 6.2 ‘INPUT A/B menu’ on page 34 and Ä Chapter 6.3 ‘OUTPUT 1/2/3/4/5/6 menu’

on page 38. Then press the [EDIT] button of all channels for which these settings are to be

applied (blue LED is lit).
Confirm the changes for all active channels with [ENTER].

6.5 Reset to factory defaults

Proceed as follows to restore the factory default settings:

1. Switch off the device.

2. Press and hold [ENTER], [ESC] and [UTILITY].

3. Switch on the device.

4. Release the three buttons as soon as the following message appears on the display:

‘Please Wait … Memory Reset’ .

5. Wait until the startup screen is displayed.

Operating

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7 Technical specifications

Inputs 2 × XLR input socket, balanced
Input level

max. +20 dBu
Outputs 6 × XLR output socket, balanced
Output level

max. +20 dBu
Interfaces USB, RS485
Frequency response 20 Hz … 20 kHz
Total harmonic distortion (THD+N)

0.005 %
Signal-to noise ratio (SNR) 110 dBA
A/D converter, D/A converter 24 bit
Sampling rate 48 kHz
Digital S/PDIF stereo input 32 kHz, 44.1 kHz, 48 kHz
Operating supply voltage

100 … 230 V 50/60 Hz

Technical specifications

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Fuse 5 mm × 20 mm, 800 mA, 250 V, slow-blow
Dimensions (W × D × H) 440 mm × 45 mm × 220 mm
Weight 2.7 kg

Technical specifications

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8 Plug and connection assignment

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 or ‘just’ in poor transmission quality!

Unbalanced transmission is mainly used in semi-professional environment and in hifi use.
Instrument cables with two conductors (one core plus shielding) are typical representatives of
the unbalanced transmission. One conductor is ground and shielding while the signal is trans‐
mitted through the core.

Unbalanced transmission is susceptible to electromagnetic interference, especially at low
levels, such as microphone signals and when using long cables.

In a professional environment, therefore, the balanced transmission is preferred, because this
enables an undisturbed transmission of signals over long distances. In addition to the conduc‐
tors ‘Ground’ and ‘Signal’, in a balanced transmission a second core is added. This also transfers
the signal, but phase-shifted by 180°.

Introduction

Balanced and unbalanced trans‐
mission

Plug and connection assignment

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Since the interference affects both cores equally, by subtracting the phase-shifted signals, the
interfering signal is completely neutralized. The result is a pure signal without any noise inter‐
ference.

1 Ground, shielding
2 Signal (in phase, +)
3 Signal (out of phase, –)

1 Ground, shielding
2 Signal
3 Bridged to pin 1

XLR plug (balanced)

XLR plug (unbalanced)

Plug and connection assignment

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9 Cleaning

Clean the device components that are accessible from the outside regularly. The cleaning fre‐
quency depends on the operating environment: damp, smoky or particularly dirty environ‐
ments can cause greater accumulation of dirt on the device components.

n Clean with a dry soft cloth.
n Stubborn dirt can be removed with a slightly dampened cloth.
n Never use solvents or alcohol for cleaning.

The fan grids of the device must be cleaned on a regular basis to remove dust and dirt. Before
cleaning, switch off the device and disconnect AC-powered devices from the mains. Use a lint­free damp cloth for cleaning. Never use solvents or alcohol for cleaning.

Device components

Fan grids

Cleaning

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10 Protecting the environment

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.

This product is subject to the European Waste Electrical and Electronic Equipment Directive
(WEEE). 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.

Disposal of the packaging mate‐
rial

Disposal of your old device

Protecting the environment

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Notes

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Notes

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Musikhaus Thomann · Hans-Thomann-Straße 1 · 96138 Burgebrach · Germany · www.thomann.de