XTA DPA SERIES Operator's Manual
  1. Manuals
  2. Brands
  3. XTA Manuals
  4. Amplifier
  5. DPA SERIES
  6. Operator's manual

XTA DPA SERIES Operator's Manual

Digital processing amplifiers
Hide thumbs
Table of Contents

Advertisement

Quick Links

Download this manual

Advertisement

Table of Contents
loading

Related Manuals for XTA DPA SERIES

Summary of Contents for XTA DPA SERIES

  • Page 2 Page 2 DPA Series — DPA80/DPA100 Operating Instructions...

  • Page 3: Table Of Contents

    DPA Series — DPA80/DPA100 Operating Instructions Page 3 CONTENTS DECLARATION OF CONFORMITY ................ 6 THANKS ........................7 INTRODUCTION ....................7 IMPORTANT SAFETY INSTRUCTIONS ..............8 INSTRUCTIONS DE SECURITE IMPORTANTES ..........9 Installing Your Amplifier: Unpacking ............... 10 Additional Symbols and Warnings ..................10 Installing Your Amplifier: Electrical Considerations .........
  • Page 4 Page 4 DPA Series — DPA80/DPA100 Operating Instructions Operating Your Amplifier: Advanced Editing Features ........36 Overview ..........................36 Selecting Available Sources (Analogue, AES, Network Audio) ..........36 Switching from Analogue to AES Sources ................37 Choosing Sources to Route to Input Processing Channels ............ 38 Changing Network Output Source ..................
  • Page 5 DPA Series — DPA80/DPA100 Operating Instructions Page 5 Appendix I: Limiters and How to Set Them Correctly ........66 Program Limiter ........................66 Peak Limiter ..........................67 Setting Accurate Limiter Thresholds — Program Limiter ............70 Amplifier Outputs’ Program Limiter Lookup Table ............... 71 Auxiliary Outputs’...

  • Page 6: Declaration Of Conformity

    Page 6 DPA Series — DPA80/DPA100 Operating Instructions DECLARATION OF CONFORMITY We, the manufacturer: XTA Electronics Limited, The Design House Vale Business Park Worcester Road Stourport on Severn Worcestershire England DY13 9BZ acknowledge our responsibility that the following products: Kind of equipment:...

  • Page 7: Thanks

    DPA and Delta DSP amplifiers handled wirelessly by the dedicated DeltaDirect iPad app. With a range of power levels available in the DPA Series, the non-DSP amplifiers can be networked to a single DPA model, creating a powerful, efficient system that’s easy to expand...

  • Page 8: Important Safety Instructions

    Page 8 DPA Series — DPA80/DPA100 Operating Instructions IMPORTANT SAFETY INSTRUCTIONS CAUTION: RISK OF ELECTRIC SHOCK. DO NOT OPEN The lightning flash with arrowhead The exclamation mark within an symbol within an equilateral triangle is equilateral triangle is intended to alert...

  • Page 9: Instructions De Securite Importantes

    DPA Series — DPA80/DPA100 Operating Instructions Page 9 INSTRUCTIONS DE SECURITE IMPORTANTES ATTENTION: RISQUE DE CHOC ELECTRIQUE. NE PAS OUVRIR Le symbole repr sentant un éclair fl Le point d’exclamation dans un triangle é é é dans un triangle quilat...

  • Page 10: Installing Your Amplifier: Unpacking

    Page 10 DPA Series — DPA80/DPA100 Operating Instructions Installing Your Amplifier: Unpacking After unpacking the unit, please check it carefully for any damage. If any is found, immediately notify the carrier concerned - you, the consignee, must instigate any claim.

  • Page 11: Installing Your Amplifier: Electrical Considerations

    DPA Series — DPA80/DPA100 Operating Instructions Page 11 Installing Your Amplifier: Electrical Considerations The amplifier has been manufactured to comply with your local power supply requirements, but before connecting the unit to the supply, ensure that the voltage (printed on the rear panel) is correct.

  • Page 12: Installing Your Amplifier: Mechanical Considerations

    Please also see the notes regarding maintenance on page 62. Installing Your Amplifier: RF Emissions The high frequency resonant converters in the DPA Series amplifiers have been designed to have very low radio frequency (RF) emissions; however even these low level emissions can cause interference with other equipment.

  • Page 13: About Your Amplifier: Dynamic Amplifier Performance Measurements

    Page 13 About Your Amplifier: Dynamic Amplifier Performance Measurements The DPA Series amplifiers are the very latest examples of a ‘dynamic amplifier’. This new ‘breed’ of power amplifiers provide very high peak power levels in a much smaller, and lighter, package than previously possible with conventional amplifiers.

  • Page 14: Connecting To Your Amplifier: Line Inputs And Outputs

    Page 14 DPA Series — DPA80/DPA100 Operating Instructions Connecting To Your Amplifier: Line Inputs and Outputs The inputs are made via 3-pin XLR connectors, which are electronically balanced and should be connected via a high grade twin core screened cable, as follows:...

  • Page 15: Connecting To Your Amplifier: Speaker Outputs

    DPA Series — DPA80/DPA100 Operating Instructions Page 15 Connecting To Your Amplifier: Speaker Outputs The speaker outputs are via Neutrik Speakon connectors. 2 pole (NL2FC) or 4 pole (NL4FC) connectors can be used. Pin 1+: Hot Pin 1-: Cold Additionally, Channel 1 Speakon connector carries Channel B2output on Pins +2 & -2 to allow easy bi-amping or bridged operation using a single NL4 connector.

  • Page 16: Connecting To Your Amplifier: Bridged (Mono) Operation

    Page 16 DPA Series — DPA80/DPA100 Operating Instructions Connecting To Your Amplifier: Bridged (Mono) Operation Pairs of channels may be independently bridged — channel pair 1+2, and/or channel pair 3+4. The method is the same for both channel pairs: Select the required bridged mode through the front panel MENU system (see page 43 for more information).

  • Page 17: Operating Your Amplifier: Front Panel Controls And Indicators

    DPA Series — DPA80/DPA100 Operating Instructions Page 17 Operating Your Amplifier: Front Panel Controls and Indicators 1: USB Type “B”: Connect to a computer for remote control — a driver will be required. Please see the section on remote control starting on page 50.
  • Page 18 43 for how to enable bridge mode. 10: STANDBY Switch: The power amplifiers in the DPA Series can be powered down leaving just the DSP active. Apart from the obvious power savings to be made, there may be circumstances when only the DSP is required, such as utilizing it for braking analogue audio channels onto a Dante network.

  • Page 19: Operating Your Amplifier: Rear Panel Sockets And Switches

    DPA Series — DPA80/DPA100 Operating Instructions Page 19 Operating Your Amplifier: Rear Panel Sockets and Switches MAINS SUPPLY RS485 GPIO PORT CONTROL 1 - AUDIO NETWORK - 2 AUX 4 AUX 3 AUX 2 AUX 1 2/3: IN 1&2 4/5: OUT 1&2...

  • Page 20: Operating Your Amplifier: Initial Set-Up And Switching On

    Page 20 DPA Series — DPA80/DPA100 Operating Instructions Operating Your Amplifier: Initial Set-up and Switching On Please read all documentation before operating your amplifier and retain all documentation for future reference. Do not spill water or other liquids into or on the unit and do not operate your amplifier while standing in liquid.

  • Page 21: Inside Your Amplifier: Dsp Layout, Configurations And Routing

    DPA Series — DPA80/DPA100 Operating Instructions Page 21 Inside Your Amplifier: DSP Layout, Configurations and Routing...

  • Page 22: Source Choices And Selection

    Page 22 DPA Series — DPA80/DPA100 Operating Instructions Source Choices and Selection Your amplifier can source audio from analogue, AES ANALOGUE IN CALIBRATION digital, or network locations (if a network card is fitted). Analogue and AES digital audio are standard, and...

  • Page 23: Input Processing Channels

    DPA Series — DPA80/DPA100 Operating Instructions Page 23 Input Processing Channels Your amplifier has four input channels of processing that can be fed from a variety of sources. INPUT PROCESSING CHANNELS A- D GAIN DELAY PEQ x 8 DYNAMIC EQ x 3...

  • Page 24: Power Amplifier And Auxiliary Output Processing Channels

    Page 24 DPA Series — DPA80/DPA100 Operating Instructions Power Amplifier and Auxiliary Output Processing Channels OUTPUT CHANNELS 1-4 (POWER AMPLIFIER CHANNELS) SPEAKER OUTPUTS PEQ x 9 GAIN POLARITY DELAY HPF - XOVER - LPF PROG. - LIMITERS - PEAK MUTE...

  • Page 25: Independent Network Audio Outputs

    DPA Series — DPA80/DPA100 Operating Instructions Page 25 Independent Network Audio Outputs INPUT PROCESS ING CHANNELS A-D OUTPUT CHANNELS 1-4 (POWER AMPLIFIER CHANNELS) S PEAKER OUTPUTS GAIN DELAY PEQ x 8 DYNAMIC EQ x 3 MUTE GAIN POLARITY DELAY HPF - XOVER - LPF PEQ x 9 PROG.

  • Page 26: Operating Your Amplifier: Understanding The Metering

    DPA Series — DPA80/DPA100 Operating Instructions Operating Your Amplifier: Understanding the Metering The metering on your DPA Series is both comprehensive and simple, but it is worth knowing what points in the signal path are being monitored and how the readouts are affected by changes during editing.

  • Page 27: On-Screen Meters

    DPA Series — DPA80/DPA100 Operating Instructions Page 27 On-Screen Meters The smaller display window above the LED metering is designed to show all source level metering and input metering. When the BANK selected is Input A-D, eight small vertical meters are shown, representing the four analogue inputs and the four possible digital inputs, and their respective levels.

  • Page 28: Operating Your Amplifier: Directly Editing Audio Parameters

    Page 28 DPA Series — DPA80/DPA100 Operating Instructions Operating Your Amplifier: Directly Editing Audio Parameters Overview Editing all audio parameters is available from the front panel of your amplifier using a combination of the select BANK keys, reassignable EDIT keys, and the BACK/NEXT/ENTER navigation controls.

  • Page 29: Input Gain

    DPA Series — DPA80/DPA100 Operating Instructions Page 29 Input Gain Variable between -40dB and +6dB in 0.1dB steps. Inp A Gain Input Gain= 6.0dB Input Delay Max delay time is 650.000mS in 10uS steps. Swap to 1mS steps by pressing ENTER.

  • Page 30: Input Parametric Eq Bands 1 Through 8

    Page 30 DPA Series — DPA80/DPA100 Operating Instructions Input Parametric EQ Bands 1 through 8 All parametric bands cover a frequency range of 19.7Hz to 32kHz when in standard PEQ mode. Some restrictions apply when other filter types are selected. Move between frequency, ‘Q’...

  • Page 31: Output Gain

    DPA Series — DPA80/DPA100 Operating Instructions Page 31 Output Gain Variable between -40dB and +15dB in 0.1dB steps. Out 1 Output 1 Gain Output Gain= +10.2dB Output Polarity Switch between normal [+] and inverted [-] polarity. Note that channel ganging is temporarily disabled for polarity adjustments.

  • Page 32: Output High Pass Filter

    Page 32 DPA Series — DPA80/DPA100 Operating Instructions Output High Pass Filter Set the high pass filter frequency — a setting of “<10Hz” bypasses the filter. To change the filter slope and type, press ENTER and then adjust with the encoder. Note that 48dB/Octave filters will only be available if PEQ 6 &...

  • Page 33: Output Parametric Eq Bands 1 Through 9

    DPA Series — DPA80/DPA100 Operating Instructions Page 33 Output Parametric EQ Bands 1 through 9 All parametric bands cover a frequency range of 19.7Hz to 32kHz when in standard PEQ mode. Some restrictions apply when other filter types are selected. Move between frequency, ‘Q’...

  • Page 34: Output Limiters: Program Limiter

    Page 34 DPA Series — DPA80/DPA100 Operating Instructions Output Limiters: Program Limiter Note that the output limiters are calibrated differently for the amplifier output channels and the auxiliary output channels. They cover the same range, but the scaling on the threshold is different as the auxiliary outputs are calibrated to the maximum line output level, whilst the amplifier outputs are calibrated to include the gain of the power amplifier.

  • Page 35: Output Matrix Gains

    DPA Series — DPA80/DPA100 Operating Instructions Page 35 Output Matrix Gains Note that this feature will only be displayed if the configuration for the amplifier or auxiliary outputs has been set to operate in “Full Matrix” mode , as opposed to “Free Assign” or a standard routing configuration (1 x 4 way, 2 x 2 way etc.)

  • Page 36: Operating Your Amplifier: Advanced Editing Features

    Page 36 DPA Series — DPA80/DPA100 Operating Instructions Operating Your Amplifier: Advanced Editing Features Overview In addition to being able to control all the EQ and limiter functions via the front panel, it is also possible to completely reconfigure the source selections and routing, turn on matrix mixing, and configure ganging options to speed up editing.

  • Page 37: Switching From Analogue To Aes Sources

    DPA Series — DPA80/DPA100 Operating Instructions Page 37 Switching from Analogue to AES Sources To select inputs, from the home screen, press MENU, choose the CONFIGURATION Sub-Menu and press ENTER. CONFIGURATION Sub-Menu Input AES Selection Use the encoder or BACK and NEXT keys to find the Input AES Selection option and press ENTER.

  • Page 38: Choosing Sources To Route To Input Processing Channels

    Page 38 DPA Series — DPA80/DPA100 Operating Instructions Choosing Sources to Route to Input Processing Channels To choose sources, from the home screen, press MENU, choose the CONFIGURATION Sub- Menu and press ENTER. CONFIGURATION Sub-Menu Input Source Selection Use the encoder or BACK and NEXT keys to find the Input Source Selection option and press ENTER.

  • Page 39: Changing Network Output Source

    DPA Series — DPA80/DPA100 Operating Instructions Page 39 Changing Network Output Source INPUT PROCESSING CHANNELS A-D OUTPUT CHANNELS 1-4 (POWER AMPLIFIER CHANNELS) SPEAKER OUTPUTS GAIN DELAY PEQ x 8 DYNAMIC EQ x 3 MUTE GAIN POLARITY DELAY HPF - XOVER - LPF PE Q x 9 PROG.
  • Page 40 Page 40 DPA Series — DPA80/DPA100 Operating Instructions Changing Network Output Source cntd… INPUT PROCESSING CHANNELS A-D OUTPUT CHANNELS 1-4 (POWER AMPLIFIER CHANNELS) SPEAKER OUTPUTS GAIN DELAY PEQ x 8 DYNAMIC EQ x 3 MUTE GAIN POLARITY DELAY HPF - XOVER - LPF PE Q x 9 PROG.

  • Page 41: Changing Crossover Configuration

    DPA Series — DPA80/DPA100 Operating Instructions Page 41 Changing Crossover Configuration As the amplifier output’s configuration setup is identical to the auxiliary output’s configuration, this section will just explain the former. The configuration of the amplifier outputs 1-4, and auxiliary outputs 1-4 have separate entries in the Configuration sub-menu, but operate identically.

  • Page 42: Using Free Assign Mode

    Page 42 DPA Series — DPA80/DPA100 Operating Instructions Using Free Assign Mode Free assign mode allows any combination of inputs to be routed to an output, with the send levels being intelligently adjusted to ensure that the output levels sum to 0dB.

  • Page 43: Bridged Mode For Output Pairs

    DPA Series — DPA80/DPA100 Operating Instructions Page 43 Press ENTER to move on to the next output channel or press the channel’s MUTE key to select it. When all channels have been routed, press ENTER — the unit will run through any remaining channels (if output 3 had been manually selected, for example, then ENTER would run through channel 4 before moving on to the final set-up selections).
  • Page 44 Page 44 DPA Series — DPA80/DPA100 Operating Instructions Depending on what bridged mode are active the appropriate LED will illuminate above the power switch: There are some changes operationally when a pair of channels are bridged. Channel MUTE keys will be automatically ganged;...

  • Page 45: Resetting Audio Parameters

    DPA Series — DPA80/DPA100 Operating Instructions Page 45 Resetting Audio Parameters Resetting parameters is available through the CONFIGURATION > Output Routing menu and CONFIGURATION > Auxiliary Routing menu as part of the set-up wizard. The final set-up query is about resetting the current parameters. If you have already edited the outputs’...
  • Page 46 Page 46 DPA Series — DPA80/DPA100 Operating Instructions Use the encoder or BACK and NEXT keys to find the Output Ganging option and press ENTER. Output Routing Ganging = 1+3 2+4 * Use the encoder or BACK and NEXT keys to choose the required ganging option and press ENTER.

  • Page 47: Operating Your Amplifier: Storing And Recalling Settings

    DPA Series — DPA80/DPA100 Operating Instructions Page 47 Operating Your Amplifier: Storing and Recalling Settings Memory Overview The memory in your amplifier is organised into three different types — input memories, output memories and source memories. Input and output memories are formatted in banks of four channels at a time —...

  • Page 48: Storing A Memory

    Page 48 DPA Series — DPA80/DPA100 Operating Instructions Storing a Memory… When a memory is to be stored, the type is first selected (Input, Output, Source or Everything) and then in the case of an Output memory, this must be further qualified to determine if the stored data is to originate from the amplifier outputs or the auxiliary outputs.

  • Page 49: Recalling A Memory

    DPA Series — DPA80/DPA100 Operating Instructions Page 49 Recalling a Memory… When a memory is recalled, after choosing the type (Input, Output, Source or Everything), recall of Output memories is further qualified by what bank of outputs the recalled data is to affect —...

  • Page 50: Operating Your Amplifier: System Adjustments

    Page 50 DPA Series — DPA80/DPA100 Operating Instructions Operating Your Amplifier: System Adjustments Overview Under the System Sub-Menu you’ll find all the non-audio features relating to your amplifier’s operation. As these are self-explanatory, they are summarised in the table below: System Sub Menu Option What it’s for…...

  • Page 51: Operating Your Amplifier: Remote Control

    Your amplifier is equipped with multiple options for remote control. It can operate as a single device via a USB connection to the front panel, and this can also be used as a converter to an RS485 network, where other DPA Series or MC Delta DSP Series or XTA processing units may be connected.

  • Page 52: Configuration Of The Remote Interface

    Page 52 DPA Series — DPA80/DPA100 Operating Instructions Configuration of the Remote Interface To configure the remote interface, from the home screen, press MENU, choose the INTERFACE Sub-Menu and press ENTER. INTERFACE Sub-Menu External Interface Use the encoder or BACK and NEXT keys to select External Interface and press ENTER.
  • Page 53 RS485 Relay: Choose ON to relay all remote control data onto the RS485 network for connection to further devices (other DPA amplifiers or XTA processors) RS485 Speed: Only shown if RS485 Relay = ON: set RS485 baud rate (recommended to use 115200 unless working with older DP224 and DP226 processors...
  • Page 54 RS485 Relay: Choose ON to relay all remote control data onto the RS485 network for connection to further devices (other DPA amplifiers or XTA processors) RS485 Speed: Only shown if RS485 Relay = ON: set RS485 baud rate (recommended to use 115200 unless working with older DP224 and DP226 processors...
  • Page 55 RS485 Relay: Choose ON to relay all remote control data onto the RS485 network for connection to further devices (other DPA amplifiers or XTA processors) USB Speed: As the USB connection appears as a virtual comm port in remote software, it still has an associated serial speed. Leave at the default of 115200. This is not the actual USB serial data rate —...
  • Page 56 Page 56 DPA Series — DPA80/DPA100 Operating Instructions Mode = RS485 Only: The RS485 port on the rear panel is active. Selecting this choice will then ask for the following further information to be confirmed: RS485 Speed: Set RS485 baud rate (recommended to use 115200 unless working...

  • Page 57: Wireless Connection With Deltadirect Ipad App

    DPA Series — DPA80/DPA100 Operating Instructions Page 57 Wireless Connection with DeltaDirect iPad App Free yourself of cables and go wireless! Plug the Ethernet connection from your amplifier(s) into a wireless router and you are good to go! Main remote configuration of a single amplifier, or a network of amplifiers is performed through AudioCore, with system tuning using either AudioCore again or DeltaDirect —...

  • Page 58: Operating Your Amplifier - Security And Preset Locking

    Similarly, gain may be just “trimmable” on some outputs but fully locked or fully unlocked on others. Preset locking can differ in individual presets and XTA cannot defeat this system, as it is designed to be wholly secure to maintain carefully designed output settings for a speaker manufacturer’s particular system.

  • Page 59: Locking The Front Panel

    DPA Series — DPA80/DPA100 Operating Instructions Page 59 Locking the Front Panel To configure security, from the home screen, press MENU, choose the SECURITY Sub-Menu and press ENTER. SECURITY Sub-Menu Unit Locking Use the encoder or BACK and NEXT keys to select lock type: Unit Locking Lock=>...

  • Page 60: Operating Your Amplifier: Resetting Back To Defaults & Clearing Security

    D4B13D — clear all user memories and reset to defaults, keeping security and factory alignment settings A2341B — clear current settings to default (leaves memories, alignments and security) AA2121 — clear security via the XTA supplied crack code (see page 61 for more information)

  • Page 61: Clearing Security - Forgotten Unlock Code

    DPA Series — DPA80/DPA100 Operating Instructions Page 61 Clearing Security — Forgotten Unlock Code Note that if you see the message “Parameters Locked!” during editing, or parameters can be viewed but not adjusted, then this is due to preset data locking or hiding and is specific to the currently running preset —...

  • Page 62: Looking After Your Amplifier: Maintenance

    Page 62 DPA Series — DPA80/DPA100 Operating Instructions Looking After Your Amplifier: Maintenance These maintenance instructions are for use by qualified personnel only. Before any routine maintenance, please ensure that your amplifier is disconnected from the mains supply! The filter behind the air intake apertures on the front of your amplifier should be cleaned or replaced periodically, e.g.

  • Page 63: Performance Of Your Amplifier: Specifications

    DPA Series — DPA80/DPA100 Operating Instructions Page 63 Performance Of Your Amplifier: Specifications Main Specifications Parameter (Units) DPA 80 DPA 100 Output Power per channel [Crest Factor = 4.8] (Watts) 8 Ohms 1000 1400 4 Ohms 2000 2700 2.7 Ohms...
  • Page 64 Page 64 DPA Series — DPA80/DPA100 Operating Instructions Power Consumption and Thermal Emissions — DPA 80 Mains Load Current Draw Thermal Emissions No Sig’l Light Average Heavy No Sig’l Light Average Heavy 10.3 12.4 12.9 10.4 21.0 12.0 25.1 Power Consumption and Thermal Emissions — DPA 100...
  • Page 65 DPA Series — DPA80/DPA100 Operating Instructions Page 65 Auxiliary Outputs and DSP Performance Parameter (Units) DPA 80 / 100 Source Impedance — Active Balanced (Ohms) < Minimum Load (Ohms) Maximum Output Level (dBu) ADC, DAC and DSP sample rate (kHz)

  • Page 66: Appendix I: Limiters And How To Set Them Correctly

    Page 66 DPA Series — DPA80/DPA100 Operating Instructions Appendix I: Limiters and How to Set Them Correctly Your amplifier has two levels of dynamic protection on its outputs — a traditional program limiter, and a peak limiter. Program Limiter High performance digital limiters are provided for each output with control over attack time, release time and threshold parameters.

  • Page 67: Peak Limiter

    DPA Series — DPA80/DPA100 Operating Instructions Page 67 Peak 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.
  • Page 68 Page 68 DPA Series — DPA80/DPA100 Operating Instructions Level For an analogue dynamics processor, the situation is much better. Controlling the gain Threshold for Onset of Gain Control electronically, and not relying on a human sidechain feedback mechanism, it can react much Time more quickly.
  • Page 69 DPA Series — DPA80/DPA100 Operating Instructions Page 69 The peak limiter follows the RMS limiter, has only two parameters to adjust — the release time and the threshold. Note that the threshold is set to be a minimum of 2dB above the threshold of the program limiter —...

  • Page 70: Setting Accurate Limiter Thresholds - Program Limiter

    Page 70 DPA Series — DPA80/DPA100 Operating Instructions Setting Accurate Limiter Thresholds — Program Limiter Introduction The limiters built into your amplifier are intended to be used for loudspeaker driver protection, as opposed to amplifier protection. The amplifier has additional limiters which can adapt automatically to both temperature and incoming mains conditions to stay operational and playing music for as long as possible.

  • Page 71: Amplifier Outputs' Program Limiter Lookup Table

    DPA Series — DPA80/DPA100 Operating Instructions Page 71 Amplifier Outputs’ Program Limiter Lookup Table Note that the setting of the auxiliary outputs’ limiters need to be referenced to the external amplifier’s gain for correct operation. A separate lookup table and explanation is given overleaf.

  • Page 72: Auxiliary Outputs' Program Limiter Lookup Table

    Page 72 DPA Series — DPA80/DPA100 Operating Instructions Auxiliary Outputs’ Program Limiter Lookup Table Note that the setting of the amplifier outputs’ limiters does not beed referenced to the amplifier’s gain as this is predetermined for the internal power amplifier sections. A separate lookup table and explanation is given on the previous page.

  • Page 73: Setting Accurate Limiter Thresholds - Peak Limiter

    DPA Series — DPA80/DPA100 Operating Instructions Page 73 Setting Accurate Limiter Thresholds — Peak Limiter Assuming the RMS limiter has been set correctly and, just as importantly, attack and release times have been chosen as appropriate to the driver to be protected, the peak limiter is typically set to limit overshoot to 3dB above the RMS limiter threshold.
  • Page 74 Page 74 DPA Series — DPA80/DPA100 Operating Instructions Only the release time may be adjusted for the peak limiters, as attack time is always set to “zero-overshoot” and so cannot be changed. The release time may be set to “slow”, “medium”...

  • Page 75: Appendix Ii: Upgrading Firmware And Loading Presets

    50 for more info on choosing the interface. Download the Files Go to the Support > Latest Software section of the XTA website to find the latest firmware or presets — these will be bundled with the “Flash Loader” application that is used to connect and update your amplifier.

  • Page 76: Connect To The Amplifier

    Page 76 DPA Series — DPA80/DPA100 Operating Instructions Connect To The Amplifier Plug in the appropriate cable according to your chosen connection method. Remember — if you are connecting via an USB or RS485, you will need to make sure your amplifier is set to ID1 for the loader to find it.

  • Page 77: Start The Update

    DPA Series — DPA80/DPA100 Operating Instructions Page 77 Start The Update! Just before you press the “Load” button — please close any other applications running on the PC — interruptions in the process could render your amplifier inoperable. Do not disconnect the cable, turn off the power or attempt to close the loader app once loading has begun! Now that you have been warned (!) —...
  • Page 78 Page 78 DPA Series — DPA80/DPA100 Operating Instructions It is now safe to remove the top cover of your amplifier — there are four screws (Torx) along each side and eight on the top of the cover. Be careful not to drop any screws inside! Locate the “Rescue Recovery”...

Table of Contents