DS 2/4 digital speaker management system user manual
Musikhaus Thomann Thomann GmbH Hans-Thomann-Straße 1 96138 Burgebrach Germany Telephone: +49 (0) 9546 9223-0 E-mail: info@thomann.de Internet: www.thomann.de 13.03.
Table of contents Table of contents 1 General notes............................................................................................................................................... 4 2 Safety notes.................................................................................................................................................. 6 3 Performance characteristics..............................................................................................................
General notes 1 General notes This user manual contains important information on safe operation of the device. Read and follow all safety notes and all instructions. Save this manual for future reference. Make sure that it is available to all persons using this device. If you sell the device to other users, be sure that they also receive this manual. Our products are subject to a process of continuous development. We therefore reserve the right to make changes without notice.
General notes 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.
Safety notes 2 Safety notes Intended use 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.
Safety notes 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.
Safety notes 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 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.
Performance characteristics 3 Performance characteristics n n n n n n n n n Two inputs, four outputs (2 × 2-way, 3-way, 4-way, 2-way-sub) Three digital 24-bit signal processors Parametric five-band equalizers High- and low-pass filters Controllable input and output sensitivity Runtime delay of up to seven milliseconds Limiter with adjustable threshold, attack, hold and decay RS232 interface Installation in 19-inch racks (1 rack unit) digital speaker management system 10
Installation and operation 4 Installation and operation 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.
Installation and operation 4.1 Pin assignment XLR-connections for signal in-/ outputs XLR mounting sockets are provided for signal inputs. XLR mounting plugs are provided for signal outputs. The figure and the table show the XLR pin assignment for balanced wiring.
Connectors and controls 5 Connectors and controls Front panel DS 2/4 13
Connectors and controls 1 Display 2 BACK / NEXT Cursor and navigation buttons. With the help of these buttons, you can place the cursor at the desired point in the display text and switch between the different menus. 3 MENU Button to call the menu function. 4 GAIN Button to activate the parameterisation mode. Operate the button repeatedly to switch between the channels. 5 ENTER Button to confirm changes and input values and to open the different submenus.
Connectors and controls 7 Jog wheel The jog wheel can be used to set parameters, enter values and select menu options. 8 LED-display input channel A / B The LEDs show the signal strength of the input signal. Reduce the output level of the device connected to the affected channel in the event of overdrive ("CLIP" LED flickers or is permanently lit). 9 LED-display output channel 1 to 4 with MUTE switch The LEDs show the signal strength of the output signal.
Connectors and controls Rear panel digital speaker management system 16
Connectors and controls 11 Plug for mains cable with fuse holder. 12 RS232 interface, 9-pin D-SUB socket. 13 OUTPUTS Signal output 4 to 1 (male XLR panel connector). 14 INPUTS Signal input channel A and B (female XLR panel connector).
Functions 6 Functions 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. "Xover sub menu" Operate the [MENU] button to open the "Xover sub menu". The settings of the crossover fre‐ quencies are stored in this menu. "load a Xover" This submenu permits calling of a stored configuration. 1. Operate the [ENTER] button to activate the "load a Xover" option. 2.
Functions "design a Xover" A user configuration can be created in this submenu. 1. Operate the [ENTER] button and then [NEXT] to activate the "design a Xover" option. 2. Select the desired mode with the [NEXT] / [BACK] buttons or with the jog wheel, e.g. "type: 2×2 way crossover“. 3. Confirm the selection with [ENTER]. The display shows ‘out 3&4 source B’ . Use the [NEXT] / [BACK] buttons or the jog wheel to select the desired channel assignment.
Functions 5. "store a Xover" Confirm the selection with [ENTER]. The display shows ‘new xover, ’ [ENTER] ‘to confirm’ . This submenu permits saving the user-specific and changed configurations in the device. 1. Operate the [ENTER] button and then twice the [NEXT] button to activate the "store a Xover" option. The display shows ‘… store a xover’ . 2. Operate the [ENTER] button and use the jog wheel to select the desired memory slot (1 to 10). 3. Operate the [ENTER] button.
Functions "erase a Xover" "security sub menu" Use this submenu to delete configurations stored in the device. 1. Operate the [ENTER] button and then three times the [NEXT] button to activate the "erase a Xover" option. The display shows ‘… erase a xover’ . 2. Operate the [ENTER] button and select the memory slot of the configuration you want to delete with the jog wheel (1 to 10). The display shows the safety prompt ‘erase xover memory?’ . 3. Confirm with [ENTER] to delete the configuration.
Functions Password input Access to the different device parameters is password-protected. Proceed as follows to enter the password: n Push the [BACK] and [NEXT] buttons at once. n Select one character at a time with the jog wheel and confirm each with [ENTER]. n Confirm the input of the last character again with [ENTER]. Then the device parameters can be changed as desired. "setup“ menu Different settings can be made in the setup menu.
Functions "delay time/distance" The "delay time/distance" menu item can be used to set the runtime delay of the digital speaker management system. Available units are meter (m), feet (ft) and milliseconds (ms). Confirm your selection with [ENTER]. "interface“ The "interface" menu item can be used to determine the transfer sped of the RS232 interface (2400, 4800, 9600, 19200 or 38400 Bd) and the device ID (Remote-ID 1 to 32) of the digital speaker management system. Confirm your selection with [ENTER].
Functions Parameter Function Value range Input gain Input amplification –40 … +6 dB Output Gain Output amplification –40 … +6 dB Output Phase Polarity +/– This parameter can be used to com‐ pensate for possible phase errors (deletion of certain frequency areas) at the outputs by phase reversal. Delay Runtime delay 0 … 7 ms This parameter can be used to com‐ pensate for constructively caused different signal runtimes of speakers or spatially caused run‐ time differences (speaker distance).
Functions Equalizer A parametric 5-band equalizer is available per output. Additionally, a high- or low-shelf filter can be set. For this, set the gain to 0 dB and the Q-factor to "Hishelf/Loshelf". To deactivate a certain EQ-band (bypass mode), push the [ENTER] button.
Functions Limiter There is a limiter available for each output. These limiters limit the signal level for each channel to a specific threshold and therefore offer additional protection against overdrive and damage to the connected speakers.
Technical data 7 Technical data Input impedance 10 kΩ Common-mode rejection ratio (CMRR) > 50 dB (30 Hz…20 kHz) Output impedance < 50 Ω Max. voltage difference between positive and negative peak voltage Vpp = 4 V, Vpp = 7.6 V Frequency response 20 Hz … 20 kHz Total harmonic distortion (THD) 0,01 % Maximum runtime delay 7 ms Output amplification –40 dB … +6 dB (±0.5 dB) Input amplification –40 dB … +6 dB (±0.
Technical data Dimensions (H × W × D) 44 mm × 480 mm × 220 mm (1.73 in. × 19.90 in. × 8.67 in.) Weight 3.6 kg (7.94 lbs.
Cleaning 8 Cleaning Fan grids 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.
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.
Musikhaus Thomann · Hans-Thomann-Straße 1 · 96138 Burgebrach · Germany · www.thomann.