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Table of Contents
Related Manuals for D.A.S. DSP-4080
Summary of Contents for D.A.S. DSP-4080
- Page 1 User’s Manual DSP-4080 Antes de utilizar el equipo, lea la sección “Precauciones de seguridad” de este manual. Conserve este manual para futuras consultas. Before operating the device, please read the “Safety precautions” section of this manual. Retain this manual for future reference.
- Page 2 DSP-4080...
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Page 3: Safety Precautions
DSP-4080 Precauciones de Seguridad Safety Precautions Conserve y lea todas estas instrucciones. Keep these instructions. Siga todas las advertencias. Heed all warnings. Follow all instructions. El signo de exclamación dentro de un triángulo indica la The exclamation point inside an equilateral triangle indicates the... - Page 4 DSP-4080 GARANTÍA Todos nuestros productos están garantizados por un periodo de 24 meses desde la fecha de compra. Las garantías sólo serán válidas si son por un defecto de fabricación y en ningún caso por un uso incorrecto del producto.
- Page 5 DSP-4080 DECLARACIÓN DE CONFORMIDAD DECLARATION OF CONFORMITY D.A.S. Audio, S.A. C/ Islas Baleares, 24 - 46988 - Pol. Fuente del Jarro - Valencia. España (Spain). DSP-4080 Declara que el DSP-4080 Declares that Cumple con los objetivos esenciales de las Directivas: Abide by essential objectives relating Directives: Directiva de Baja Tensión (Low Voltage Directive)
- Page 6 DSP-4080 User’s Manual...
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Page 7: Table Of Contents
DSP-4080 Contents Introduction Front panel description Rear panel description Operating the device Editing audio parameters - Input channels Editing audio parameters - Output channels Input ganging and output ganging Memory structure Remote control interface operation AES inputs and outputs AES diagnostics and status information... - Page 8 DSP-4080 User’s Manual...
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Page 9: Introduction
(program change) purposes. Security lock-out is available for all controls. The DSP-4080 are also equipped with AES/EBU digital inputs and outputs, and include a sample rate converter, capable of accepting anything from 32kHz up tp 192kHz. -
Page 10: Front Panel Description
DSP-4080 Front panel description [1]-LCD Screen: Shows, by default, the name of the last recalled memory on the bottom line of the screen, and the current routing on the top line. Also used to show all parameters as they are edited, and all menu selections. -
Page 11: Rear Panel Description
DSP-4080 Rear panel description [1]: Power Switch: turns the unit’s mains supply off and on. Mains Fuse: located in a finger-proof holder adjacent to the mains inlet. A spare fuse is also located in this holder. Mains Inlet: connected via a standard IEC socket. -
Page 12: Operating The Device
Operating the device Note about operation with AudioCore software: The following operating information covers setup and control of the DSP-4080 via the front panel controls only. Please consult the manual supplied with this software for information regarding full computer control. - Page 13 DSP-4080 Routing Options and Processing Blocks Due to the completely new DSP platform, the routing possibilities within the DSP-4080 has been made completely flexible, with a matrix available allowing any combination of inputs to be routed to any output. The additional DSP power has permitted the inclusion of more processing blocks, even considering the extra inputs and outputs, and the doubling of sample rate.
- Page 14 DSP-4080 4 x 2 way crossover: As shown, each input feeds a pair of outputs, odd numbers being the low frequency split, and even numbers being the high part of the spectrum. Default suggested crossover frequencies are shown by each output.
- Page 15 DSP-4080 2 x 4 way crossover: Inputs A and B feed four outputs each, with inputs C & D being unused. Default suggested crossover frequencies are shown by each output. 1 x 8 way crossover: Inputs A is fed to all eight outputs, with initial settings being all full bandwidth. The crossover points can be adjusted as desired.
- Page 16 DSP-4080 Free Assign Routing If none of the preset configurations are appropriate to the required system setup, it is possible to manually select the routing of the crossover. This is achieved through the ‘Crossover Menu’ -> ‘Design A Crossover’. Pressing ENTER will start the crossover design wizard, with the first option being to choose the routing.
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Page 17: Editing Audio Parameters - Input Channels
DSP-4080 Editing audio parameters - Input channels Input gain The range of the control over the input gain is -40dB to +6dB in 0.1dB steps. Pressing EDIT, the display shows: Input A Gain Input Gain = +6.0dB The GAIN allows to change its value. Pressing ENTER to confirm. -
Page 18: Editing Audio Parameters - Output Channels
DSP-4080 Editing audio parameters - Output channels Output gain The range of the control over the output gain is -40dB to +15dB in 0.1dB steps. Pressing EDIT the display shows: Output 1 Gain Output Gain = +6.0dB Output polarity The polarity (or phase) of each output may be switched individually as below. - Page 19 DSP-4080 Output high pass filter The high pass crossover filter on each output has a frequency range of <10Hz up to 32kHz in 1/36th Octave steps. If you try to set the high pass filter to a higher frequency than the low pass (which would be pointless and result in no output), the message ‘High/Low Freq.
- Page 20 DSP-4080 Information: Note that 2 bands each will be lost when using 48dB slope crossover filters, resulting in a maximum of 5 bands of EQ when both high and low pass are set to 48dB/Octave. Output limiter The limiter on each output has adjustable attack and threshold, with a release time that is selectable to be a multiplier of the attack time.
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Page 21: Input Ganging And Output Ganging
DSP-4080 Input ganging and output ganging The method of linking inputs or outputs together during editing is achieved in the same way, so only crossover (output) ganging will be explained here. Having selected ‘Crossover Ganging’ from the menu under the ‘Crossover Sub-menu’, the current ganging set-up will be displayed. This will either be a preset selection as would be useful in a standard crossover configuration –... -
Page 22: Memory Structure
DSP-4080 Memory structure The DSP-4080 has its memories split into sections, allowing independent recall of crossover settings (i.e. all parameters associated with outputs), and input settings. There are, therefore, two types of memory available: ‘Input Only’ and ‘Crossover Only’,also combinations ‘Input & Xover’. - Page 23 The DSP-4080 has 256 memory locations, but these are dynamic in nature – obviously a memory containing Input and Crossover settings takes up more space than one containing just Input settings.
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Page 24: Remote Control Interface Operation
A typical interface set-up might involve running an RS232 link from laptop or a desktop computer to a DSP-4080 unit set up as a master unit. The diagram below shows this method of connection, the required menu options are also given. Note that the RS232 cable must be a 1-1 connection type, NOT a null modem cable (which has connections crossed internally). - Page 25 DSP-4080 Loading New Software via a PC The unit's internal software may be updated via the RS232 port ONLY, one unit at a time. We recommend disconnecting all other devices when updating the software. The unit's interface must be set as RS232 Master on ID1 for the PC loader program to recognise it and allow the update to be sent.
- Page 26 RS485 network is 128. RS485 interface This interface is fitted as standard to DSP-4080 units and is accessed via the 3-pin XLR sockets on the rear of the unit. Cables to connect units...
- Page 27 DSP-4080 RS485 connection To use RS485 communication directly from a computer, a master unit must be configured to receive RS485. You must have a suitable RS485 port on your computer, or a converter connected to the serial port in use. This configuration is shown below, along with the required unit setup.
- Page 28 DSP-4080 If your laptop or PC does not have a spare serial port (or any serial ports for that matter!), the RS485 converter must be connected through a USB – Serial converter. The RS485 converter that DAS recommend is available in two types – the standard K2, and the more advanced K2-ADE version. Only K2-ADE version will work with USB-Serial converters, as these converters do not support the extra handshake lines used with the standard converter.
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Page 29: Aes Inputs And Outputs
AES inputs and outputs The DSP-4080 units have a full AES implementation built in as standard. This allows the unit to both receive digital audio directly, and to transmit digital audio on to other devices. The switching of input and output can be performed independently, and the inclusion of sample rate converters on the inputs allows the unit to accept sample rates from 32kHz up to 192kHz. -
Page 30: Aes Diagnostics And Status Information
DSP-4080 AES diagnostics and status information Also under the AES/EBU Sub Menu is the AES Status Information option, which can be used to check the incoming sample rate(s) and confirm that the data is being received correctly. Pressing ENTER will first show... -
Page 31: Security And Locking
DSP-4080 Security and locking After selecting the Security Sub Menu and pressing ENTER, select one of the lock types, choosing the most appropriate one for your application. As ever, ENTER will confirm your selection. User Specific Upon pressing ENTER to select this type of lock, each parameter group is presented in turn. Choose the type of lock (as above) using the FREQ encoder, and press ENTER to confirm each parameter. - Page 32 DSP-4080 Unlocking the Unit To unlock the unit press ENTER and then type the code in. This can be entered by using the FREQ control to select a character, and the BACK and NEXT keys to move to the next character. Alternatively, the EDIT keys can be used to enter a code by pressing any combination of the eight buttons.
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Page 33: Advanced Audio Features
DSP-4080 Advanced audio features Program Limiter High performance digital limiters are provided for each output with control over attack time, release time and threshold parameters - see details below. This level of control allows the user to balance the required subjective quality of the limiter against the driver protection requirements. - Page 34 DSP-4080 “D-Max” Clip Limiter The main limitation with traditional dynamics control is the inability of the processing to react truly instantaneously to the signal. One of the most significant advantages of digital signal processing over analogue is the ability to delay the audio signal precisely and without extensive complex hardware. The entire...
- Page 35 DSP-4080 The DSP-4080's “D-Max” limiter predelays the sidechain signal, resulting in a “zero overshoot” limiter, which is able to catch all peaks and provide a reliable absolute maximum setting for the output of any channel. The predelayed sidechain is shown in green, with the main signal in red.
- Page 36 DSP-4080 Setting Accurate Limiter Thresholds The limiters built into the DSP-4080 are intended to be used for loudspeaker driver protection, as opposed to amplifier protection. All modern professional power amplifiers designed for live sound use have their own limiters, which are tailored to protecting the amplifier from clipping.
- Page 37 Please see page 12 for details of how to adjust the high and low pass crossover filter settings. Time Alignment A further advantage of the DSP-4080 over conventional products is the provision of an independently adjustable delay section for each output. This allows the true arrival time from multiple drivers to precisely aligned rather than relying on the compromise 'phase adjust' approach.
- Page 38 DSP-4080 Parametric Filter Types and Their Uses A wide selection of filter types has been made available under the PEQ section when editing input or output filters. Scrolling through the various filter types is achieved by repeated presses of the ENTER key.
- Page 39 DSP-4080 <- Bandpass filter InA Input A BPS:1/\ 1k00Hz Q = 3.0 Bandpass Remember – to change filter types, press BYPASS to bypass the filter, and then use ENTER to select the filter type. The bandpass filter has adjustable frequency and 'Q' (or Bandwidth) controls.
- Page 40 DSP-4080 <- Phase filter InA Input A PHF:10 1k00Hz 150º Phase Remember – to change filter types, press BYPASS to bypass the filter, and then use ENTER to select the filter type. The phase filter has adjustable frequency, and phase shift controls. This introduces a phase shift that gradually changes from 180º...
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Page 41: Specifications
DSP-4080 Specifications Inputs: 4 electronically balanced Limiters Impedance: > 10k ohms. Program Limiter: CMRR : >65dB 50Hz - 10kHz. Threshold: +22dBu to -10dBu MUTE : ON/OFF Attack time: 0.3 to 90 milliseconds Outputs: 8 electronically balanced Release time: 2/4/8/16/32 x Attack time Source Imp: <... -
Page 42: Quick Reference
DSP-4080 Quick reference Editing channels : press channel's GAIN key. First press accesses that channel's gain. To scroll through channel's parameters, use the BACK and NEXT keys. Second press accesses last viewed parameter. Third press will drop back to the default screen. -
Page 43: Menu System Overview
DSP-4080 Menu system overview User’s Manual... -
Page 44: Menu System Shortcuts
DSP-4080 Menu system shortcuts A lot of functions have been assigned menu shortcuts – these are accessible directly from the default screen by pressing MENU followed by the appropriate MUTE or EDIT button as shown. The entire list of features accessible in this way is given below. -
Page 45: Menus In Detail
DSP-4080 Menus in detail GLOBAL MEM. Recall a Memory Recall Input and Crossover Memories or combinations of. Store a Memory Store Input and Crossover Memories or combinations of. Erase a Memory Erase Input and Crossover Memories or combinations of. INPUT SECTION Input Ganging Gang (link) inputs together so their parameters track. - Page 46 DSP-4080 User’s Manual...
- Page 48 www.dasaudio.com D.A.S. AUDIO, S.A. D.A.S. AUDIO OF AMERICA, INC. D.A.S. AUDIO ASIA PTE. LTD. C/. Islas Baleares, 24 Sunset Palmetto Park 25 Kaki Bukit Crescent #01-00/02-00 46988 Fuente del Jarro 6816 NW 77th Court. Kaki Bukit Techpark 1 Valencia, SPAIN Miami, FL.
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