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.
DSP-4080
DSP-4080 Precauciones de Seguridad Safety Precautions Conserve y lea todas estas instrucciones. Siga todas las advertencias. El signo de exclamación dentro de un triángulo indica la existencia de componentes internos cuyo reemplazo puede afectar a la seguridad. Keep these instructions. Heed all warnings. Follow all instructions. The exclamation point inside an equilateral triangle indicates the existence of internal components whose substitution may affect safety.
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. Las reparaciones en garantía pueden ser realizadas, exclusivamente, por el fabricante o el servicio de asistencia técnica autorizado. Otros cargos como portes y seguros, son a cargo del comprador en todos los casos.
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 User’s Manual
DSP-4080 Contents Introduction 3 Front panel description 4 Rear panel description 5 Operating the device 6 Editing audio parameters - Input channels 11 Editing audio parameters - Output channels 12 Input ganging and output ganging 15 Memory structure 16 Remote control interface operation 18 AES inputs and outputs 23 AES diagnostics and status information 24 Security and locking 25 Advanced audio features 27 Specifications 35 Quick reference 36 Menu system overview 37 Menu s
DSP-4080 User’s Manual
DSP-4080 Introduction The DSP-4080 are powerful DSP based audio processors, ideally suited for install applications, where they combine the functions of a multitude of conventional products in a compact 1U unit with extensive remote control capabilities. To achieve this, the units have up to four inputs and eight outputs which can be configured in a selection of basic crossover modes – 4 x 2 way; 2 x 3 way + 2 Aux; 2 x 4 way; and 1 x 8 way (as applicable to i/o configurations).
DSP-4080 Front panel description 2 3 8 10 1 13 12 4 6 15 5 7 9 11 14 [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. Control Keys: Selection and adjustment of parameters. [2]-NEXT key moves forward through list of parameters. [3]-BACK key moves backwards through list of parameters.
DSP-4080 Rear panel description 1 2 3 4 5 6 [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. [2]-RS232: RS232 standard via a 9 pin D-type connector, for connection to a PC. Data is converted to RS485 standard and relayed to slave units via the RS485 sockets. [3]-RS485 IN-OUT: XLR sockets.
DSP-4080 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. Start-up procedure Switching on the unit will display a brief message detailing the unit type and software version running and all LEDs will briefly illuminate.
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.
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. 2 x 3 way crossover: Inputs A and B feed three outputs each, with output 7 being fed from input C, and output 8 from input D. Note the 'Aux' outputs are set to full range. Default suggested crossover frequencies are shown by each output.
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.
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. The display will show Design A Crossover -> Routing = 4 x 2 WAY * or whatever the current configuration is set to.
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: IPA Input A Gain Input Gain = +6.0dB The GAIN allows to change its value. Pressing ENTER to confirm. Base delay The maximum available delay between any input and output is 650mS. For example, if the input delay on channel A is set to 500mS, the maximum available output delay for any output fed from input A will be 150mS.
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: OP1 Output 1 Gain Output Gain = +6.0dB Output polarity The polarity (or phase) of each output may be switched individually as below. OP1 Output 1 Polar Polarity = [+] Using GAIN, the phase may be changed between ‘-’ (inverted phase) or ‘+’ (non inverted phase).
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. Overlap!’ will be displayed. Note that to access the 48dB/Octave filters, parametric bands 6 & 7 need to be bypassed, or set to 0dB.
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. For example, as shown below, the attack time is 2mS and release is “x16” so 32mS.
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.
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’. These, and all combinations of memory types, appear in the ‘GLOBAL MEMORY Sub Menu’, and its operation warrants a little more explanation.
DSP-4080 Through ‘STORE’ using ‘GLOBAL MEMORY Sub Menu’, we have stored 10 memories. If it is required to recall a location that contains ‘Input Only’ settings, this will limit the selection as shown below: 2, 3, 4, 6, 8, 9, and 10. But, recalling 4, 6, 8 or 10 will leave the current ‘Xover’ settings untouched. However, if it is required to recall ‘Input & Xover’ settings then 4, 6, 8, and 10 will be the only numbers available, with the option to change all the parameters.
DSP-4080 Remote control interface operation RS232 interface This interface is fitted as standard to all units and is accessed via the 9-pin D-type connector on the rear of the unit. Note that to connect to a computer's COM (serial) port correctly, a one-to-one cable must be used, and NOT a 'null modem' cable. A 'null modem' cable has the 'transmit' and 'receive' wires swapped over and will not work. The RS232 connection is suitable for distances of about a maximum of 25 feet (7.
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. RS232 Connection (Multiple Units) If control over multiple units is required, typically the slaves will be set up to run from the RS485 ports on the master unit.
DSP-4080 Shadow ID Numbers Shadow ID numbers allow extra units to share the same ID and follow the settings of the 'main' ID. This is useful for larger systems (for example anything above a 4-way stereo system) where it is only necessary to set up one side of the system, and allow the other unit to track it identically. Using the shadow IDs in this way also reduces the apparent system complexity within AudioCore.
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.
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.
DSP-4080 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.
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 AES Device Status V1: E V2: E V3: A This display shows the correct operation of the three AES transmitters V1, V2 and V3. The letter after each is the silicon version (and is of no importance to the user).
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. After the last parameter, the unit requests a password.
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. Each EDIT key represents its channel labelling, as described in the locking section. Forgotten the Password? Don't panic! Your unit can still be unlocked.
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.
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.
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. As the main signal arrives slightly after the sidechain, the output from the unit does not suffer from the overshoot problem.
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. The following section describes how to set up the units' limiters to provide exceptional protection against driver overheating, and cone over-excursion.
DSP-4080 Crossover Filter Slopes It should also be noted that the turnover frequency displayed on the screen is the -3dB point for all types except Linkwitz-Riley where the -6dB point is shown. If the -6dB point is to be used for the Bessel or Butterworth filter, take the required crossover frequency, multiply this by the appropriate factor from the following table and then select the closest available frequency on the display.
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. Note that this will only change filter types if the filter is BYPASSED or the GAIN set to 0dB. Bypassing the filter, then changing types using the ENTER key will automatically set the gain back to 0dB.
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. These affect a range of frequencies symmetrically about the centre frequency as shown in the graph, gradually cutting the level, but providing no gain.
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 above the centre frequency to the specificed value at the centre frequency, and tending towards 0º below the centre frequency.
DSP-4080 Specifications Inputs: 4 electronically balanced Impedance: > 10k ohms. CMRR : >65dB 50Hz - 10kHz. MUTE : ON/OFF Outputs: 8 electronically balanced Source Imp: < 60 ohms Min. Load: 600 ohms Max. Level: +20dBm into 600 ohms MUTE : ON/OFF Frequency Resp.: ±½dB 20Hz-20kHz -3dB @ 32kHz Dyn. Range: >116dB 20Hz-20k unweighted Distortion: < .02%@1kHz,+18dBm Maximum Delay: 650 mS Min Step Size: 0.3uS Input Gain: +6dB to -40dB in 0.1dB steps Output Gain: +15dB to -40dB in 0.
DSP-4080 36 User’s Manual MENU activates menus LCD display BACK and NEXT step through channel parameters & menus Notes The crossover (output) settings may be stored independently of the input settings, using the Global Memory sub-menu. The output meters show level, in dB from the limiter threshold, and the input meters show level from clipping the A-D converters, pre-gain and all EQ. The high and low pass crossover filters are defined independently on each output channel.
Input Reset Store a Memory User’s Manual GPI Interface Wiser 2400 Setup External Interface INTERFACE Set Date & Time Clip LED Hold Time Delay Time/Dist’nce Output Meters Filter Q/Bandwidth Wake-up Time Temperature Alarm LED Brightness LCD Contrast System Status SYSTEM Unit Locking SECURITY AES Status Info. Output Selection AES/EBU Note that if no action is taken in menu mode, the unit will return to normal 'default' mode after about twenty (20) seconds.
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.
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 Input Reset Gang (link) inputs together so their parameters track. Start wizard to reset sections of input parameters. CROSSOVER Design a Crossover Crossover Ganging Set up a new crossover from scratch.
DSP-4080 User’s Manual
UM_DSP4080_02_EN www.dasaudio.com D.A.S. AUDIO, S.A. C/. Islas Baleares, 24 46988 Fuente del Jarro Valencia, SPAIN Tel. 96 134 0525 Tel. Intl. +34 96 134 0860 Fax 96 134 0607 Fax Intl. +34 96 134 0607 D.A.S. AUDIO OF AMERICA, INC. Sunset Palmetto Park 6816 NW 77th Court. Miami, FL. 33166 - U.S.A. TOLL FREE: 1-888DAS4USA Tel. +1 305 436 0521 Fax +1 305 436 0528 D.A.S. AUDIO ASIA PTE. LTD. 25 Kaki Bukit Crescent #01-00/02-00 Kaki Bukit Techpark 1 Singapore 416256 Tel.
