DSP 4x4 Mini Amp 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 26.05.
Table of contents Table of contents 1 General information................................................................................................................................. 1.1 Further information........................................................................................................................... 1.2 Notational conventions.................................................................................................................... 1.3 Symbols and signal words.....
General information 1 General information This user manual contains important information on the 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 another user, be sure that they also receive this manual. Our products and user manuals are subject to a process of continuous development.
General information 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.
General information 1.2 Notational conventions This manual uses the following notational conventions: Letterings The letterings for connectors and controls are marked by square brackets and italics. Examples: [VOLUME] control, [Mono] button. Displays Texts and values displayed on the device are marked by quotation marks and italics. Examples: ‘24ch’ , ‘OFF’ .
General information Instructions The individual steps of an instruction are numbered consecutively. The result of a step is indented and highlighted by an arrow. Example: 1. Switch on the device. 2. Press [Auto]. ð Automatic operation is started. 3. Switch off the device. 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.
General information 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 pos‐ sible dangerous situation that can result in material and environmental damage if it is not avoided. Warning signs Type of danger Warning – high-voltage. Warning – danger zone.
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.
Safety instructions 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. DANGER! Electric shock caused by high voltages inside Within the device there are areas where high voltages may be present.
Safety instructions NOTICE! Risk of fire Do not block areas of ventilation. Do not install the device near any direct heat source. Keep the device away from naked flames. 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. Only operate the device within the ambient conditions specified in the chapter ‘Technical specifications’ of this user manual.
Features 3 Features n n n n n n Ultra-compact 4-channel DSP and 4-channel power amplifier Ideal for small installations and in combination with ceiling speakers Inputs: 4 × 1/4" jack socket (balanced) Outputs: 4 ×1/4" jack socket (balanced) and screw terminals USB connection for control via PC using the supplied software (cable included) Comprehensive setting options for optimal sound – Parametric Equalizer – Graphic Equalizer – High- and low-pass filters – Noise Gate – Limiter – Phase inversion digital
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.
Installation and starting up Configuration example The figure schematically shows how the device can be controlled via a computer's USB port.
Connections and controls 5 Connections and controls ö# $% INPUT 1 3 2 4 Amp SIGNAL USB CH 2 CH 1 CH 3 POWER CH 4 SPEAKER OUTPUT 230V~50Hz 4X60W @ 4Ω 4X50W @ 8Ω PASSIVE OUTPUT ( ' & DSP 4x4 Mini Amp 15
Connections and controls Front panel 1 LEDs [1], [2], [3], [4] The LED lights up when a signal is present at the respective input. 2 Inputs [CH 1] … [CH 4], designed as 1/4" phone jack (mono, balanced). 3 [USB] USB port 4 [POWER] This LED lights when the device is turned on. Rear panel 5 [SPEAKER OUTPUT] Screw terminal strip 6 [PASSIVE OUTPUT] Outputs [CH 1] … [CH 4], designed as 1/4" phone jack (mono, balanced).
Operating on the computer 6 Operating on the computer 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.
Operating on the computer Components of the programme window All tabs of the programme window have a similar structure and are divided into the following areas: # $ ö % & ' digital speaker management system 18
Operating on the computer 1 Tab for selecting a function group 2 Main menu 3 Button for the status of the connection to the PC 4 Display area 5 Control area 6 Buttons for quick access to important presets DSP 4x4 Mini Amp 19
Operating on the computer Main menu Menu item Meaning ‘File’ Loading user presets and saving them on the PC ‘Link’ Assignment of input to output channels ‘Copy’ Copying parameter settings from one input or output channel to another ‘Lock’ Changing device password ‘Test Tone’ Setting the internal test tone generator: Pink noise, white noise, sine wave 20 Hz…20 kHz ‘Language’ Language selection for the user interface of the programme (English or German) ‘About’ Information about the programme
Operating on the computer Buttons for quick access to important presets Range Meaning ‘Address’ Display of the marking of the device ‘Preset’ Display of the current user's preset ‘Store’ Saving user preset ‘Recall’ Recalling user preset DSP 4x4 Mini Amp 21
Operating on the computer ‘Gain’ tab digital speaker management system 22
Operating on the computer Range Meaning Display area The waveform of input and output channels is graphically displayed. Use the radio buttons ‘Inx’ and ‘Outx’ to determine the inputs and outputs to be displayed. Control area 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.
Operating on the computer ‘Gate’ tab digital speaker management system 24
Operating on the computer Range Meaning Display area 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.
Operating on the computer ‘Comp’ tab digital speaker management system 26
Operating on the computer Range Meaning Display area 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.
Operating on the computer ‘Delay’ tab digital speaker management system 28
Operating on the computer Range Meaning Display area Shows the set delays for all output channels. Control area 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).
Operating on the computer ‘Matrix’ tab digital speaker management system 30
Operating on the computer Range Meaning Display area Shows the current interconnection of input to output channels. Input and output channels can be renamed. Click on a function area (such as ‘PEQ’ or ‘DELAY’ ) to open the tab. Here you can enter the corresponding parameters directly. Control area 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.
Operating on the computer ‘Out 1’ – ‘Out 4’ digital speaker management system 32
Operating on the computer Range Meaning Display area Use the radio buttons ‘Mag’ or ‘Phase’ 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.
Technical specifications 7 Technical specifications Amp class Input connections Output connections D Audio signal Audio signal Frequency response Type 4 × 1/4" jack socket, balanced Level +12 dBu Impedance 20 kΩ (stereo), 10 kΩ (mono) Type 4 × 1/4" jack socket, balanced Level +12 dBu Impedance < 500 Ω 20 Hz … 20 kHz –0.3 dB Total harmonic distortion (THD) < 0.
Technical specifications Crosstalk > 70 dBu 20 Hz … 20 kHz Digital signal processing Output power Digital signal processor 32 bit A/D-D/A converter 24 bit Sampling rate 48 kHz 8Ω 4 × 50 W RMS 4Ω 4 × 60 W RMS Operating supply voltage AC 230 V Dimensions (W × H × D) 240 mm × 160 mm × 43 mm Weight 1.
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 No Bridged operation No Temperature-controlled fan No Convection cooling Yes digital speaker management system 36
Plug and connection assignment 8 Plug and connection assignment 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.
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.
