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DSP-4 is a 1 in/4 out advanced processing board specifically designed to provide powered products with all the features and processing power available on flagship KDSP Series rack amplifiers. It allows access to unique Armonìa functionalities such as LiveImpedance Measurement, TruePower Limiter, and Active DampingControl. Compatible with all DigiMod Series amp modules, the DSP-4 is ideal for any application with high processing and digital audio networking requirements, and represents the perfect "brain" for top-level multi-way systems and line arrays where complete control and premium performances are needed.
Processing power and audio performances
Based on Analog Devices SHARC DSP with 40 bit floating point data allowing for optimal dynamic range and lossless processing, the DSP-4 offers:
1x analog input with:
Complete set of limiters: RMS, TruePower™ and Peak limiter with look ahead, to protect drivers from excessive power and potentially breaking displacement.
4x fully processed outputs with:
Control and monitoring features
The DSP-4 is fully supported by Powersoft Armonía™ Pro Audio Suite software, enabling remote control via Ethernet (AESOP network) of parameter settings, preset handling, group information, firmware update, extensive OEM presets locking features. With the DSP-4 you have access to unique Armonía features: Active DampingControl™, for dramatically improved cone control resulting in better sound and higher output - TruePower™ Limiter to avoid burning voice coils while getting maximum performances - LiveImpedance™ Measurement for load impedance monitoring during live performances, using 8 analog audio inputs for output current and voltage acquisition. Flexible and Safe Signal Routing with AESOP network. AESOP is a Powersoft proprietary networking protocol that guarantees easy system configuration and maximum reliability. Automatic configuration lets you quickly set up redundant and daisy-chained ring network topologies with fault bypass technology permitting to overcome any faulty device in the network with a super-fast recovery time and assuring rock solid connectivity without any audio or control signal loss.
The DSP-4 supports AESOP protocol through the Digital Audio Input add-on board, accepting AES3 signals from RJ45 connector or XLR and with input MUX: you can manage 2xAES3 streams, stereo 24 bit, supporting multiple sampling rates (32 to 196 kHz), with selectable glitchless analog auto backup, gain trim and link through.
Advanced features
Processing power and audio performances
Based on Analog Devices SHARC DSP with 40 bit floating point data allowing for optimal dynamic range and lossless processing, the DSP-4 offers:
1x analog input with:
- Tandem technology for optimized A/D conversion (>125dB SNR)
- Up to 4s of input delay
- Arbitrary frequency response input equalizer with three layers of 32 filters each (PEQ, Raised cosine, Shelving)
Complete set of limiters: RMS, TruePower™ and Peak limiter with look ahead, to protect drivers from excessive power and potentially breaking displacement.
4x fully processed outputs with:
- 8 biquad crossovers (up to 48 dB/octave)
- 16 full parametric filters per channel (Peaking, High/Low Shelving, High/Low Pass Eq, Band pass, Band stop, All pass)
- Custom FIR filter (385 taps @ 48 kHz for the pre-output eq and for each output eq)
- 100ms delay available for alignment/auxiliary purposes
Control and monitoring features
The DSP-4 is fully supported by Powersoft Armonía™ Pro Audio Suite software, enabling remote control via Ethernet (AESOP network) of parameter settings, preset handling, group information, firmware update, extensive OEM presets locking features. With the DSP-4 you have access to unique Armonía features: Active DampingControl™, for dramatically improved cone control resulting in better sound and higher output - TruePower™ Limiter to avoid burning voice coils while getting maximum performances - LiveImpedance™ Measurement for load impedance monitoring during live performances, using 8 analog audio inputs for output current and voltage acquisition. Flexible and Safe Signal Routing with AESOP network. AESOP is a Powersoft proprietary networking protocol that guarantees easy system configuration and maximum reliability. Automatic configuration lets you quickly set up redundant and daisy-chained ring network topologies with fault bypass technology permitting to overcome any faulty device in the network with a super-fast recovery time and assuring rock solid connectivity without any audio or control signal loss.
The DSP-4 supports AESOP protocol through the Digital Audio Input add-on board, accepting AES3 signals from RJ45 connector or XLR and with input MUX: you can manage 2xAES3 streams, stereo 24 bit, supporting multiple sampling rates (32 to 196 kHz), with selectable glitchless analog auto backup, gain trim and link through.
Advanced features
- 1 microphone input for fault detection through comparison with spectral footprint
- 1 auxiliary analog audio inputs for aux/diagnostic signal acquisition
- 3-axis inclinometer for tilt and pitch measurement
- Optional GPS module for georeferenced positioning
- Powerful Analog Devices SHARC DSP / 330MHz / 2000MFLOPS
- 40 bit, floating point data allowing for optimal dynamic range and lossless processing
- Full integration in Powersoft Armonía™ Pro Audio Suite software
- Large system setup and servicing is made easy.
- AES3 with selectable glitchless analog auto backup.
- Alignment delay up to 4s, with high temporal resolution (1 us step)
- True power limiter to avoid burning voice coils while getting the maximum performances from drivers
- Crossover with IIR Butterworth, Bessel and Linkwitz-Riley filters, up to 48 dB/octave
- Advanced load impedance estimation
- Peak limiter with lookahead
- Custom FIR filter, 2048 taps @ 48 Khz shared arbitrarily between input and outputs
- Arbitrary frequency response input equalizer, up to 256 raised cosine filter cells
- True power limiter to avoid burning voice coils while getting the maximum performances from drivers
- Patented damping control and cable resistance compensation: get optimally damped bass response with any cabling length
- AES3 gain trim
- AES3 link through
- 1 channel input processing with propietary Tandem technology for high SNR
- 2 channels input for auxiliary input processing
- 4 fully processed channel outputs
- Automatic network configuration.
- Support multi sampling rates
- Fast failure recovery time: <0.05 s on audio signal, <0.5 s on control data.
| GENERAL | |||||
|---|---|---|---|---|---|
| Architecture |
Powerful Analog Devices SHARC DSP / 330MHz / 2000MFLOPS | ||||
| Internal precision |
40 bit, floating point data allowing for optimal dynamic range and lossless processing | ||||
| ASRC | 8-channel Digital Asynchronous Sample Rate converter for perfectly clean digital audio acceptance | ||||
| ASRC Specs | 128 dB SNR - 0,0003% THD | ||||
| User data storage | Up to 10 presets | ||||
| Firmware upgrade | Network upgradable firmware | ||||
| Remote control | Full support into Powersoft Armonia™ Pro Audio Suite | ||||
| Connector | Simm connector 72 pins, optional micromatch to SIMM socket to use 2 bridged DigiMod amp modules | ||||
| Analog to analog performance | > 117 dB(A) Dynamic Range, THD+N < 0.006% (20Hz – 20kHz) | ||||
| Latency | 3.5 ms fixed latency architecture | ||||
| Configurations | 1 In / 4 Out | ||||
| DSP FEATURES |
|||||
|---|---|---|---|---|---|
| Cross-over filters | Crossover: Butterworth, L-R, Bessel, Arbitrary Asymmetric 6dB/oct to 48dB/oct (IIR) | ||||
| Input equalizer | Three layers (PEQ, Raised cosine, shelving) of 32 filter each. 32 band graphic 1/3 oct. variable Q per channel representation | ||||
| Output equalizer | 16 full parametric per channel, IIR: Peaking, High/Low Shelving, High/Low Pass Eq, Band pass, Band stop, All pass, up to 32 ms delay for speaker alignment | ||||
| FIR filter |
Up to 2048 taps @ 48 kHz | ||||
| Limiter | Dynamics processing with look ahead Peak limiter, RMS limiter, True Power Limiter | ||||
| Delay | Delay: up to 4 seconds @ 48 KSPS, sample-by-sample stepping | ||||
| Damping factor | Patented Adjustable Damping Factor and Cable Resistance Compensation, up to 2 Ohm negative/positive compensation for optimal low-end speaker control | ||||
| Impedance monitor | High performance monitoring of Power Amp output voltage/current/impedance | ||||
| Parameters locking | Protection of OEM/user part | ||||
| AUDIO DIGITAL INPUTS | |||||
|---|---|---|---|---|---|
| Input AES3 | XLR AES3 input or 2 AESOP input from RJ45 connector with selectable glitchless analog auto backup | ||||
| AES3 gain | Gain trim | ||||
| AES3 Signal routing | AES3 signal forwarding from XLR to RJ45 | ||||
| AESOP Routing | AESOP repeater mode with passive pass-through | ||||
| Sample rate supported | from 32kHz to 192 kHz | ||||
| AUDIO ANALOG INPUTS | |||||
|---|---|---|---|---|---|
| A/D Converter |
1 input channel with proprietary Tandem© architecture dual 24bit / 48KHz DAC | ||||
| Optional input | 2 aux input processing (i.e. microphone for fault detection) | ||||
| Frequency response (-0.5 dB) | 20Hz – 22kHz | ||||
| THD + N (20Hz – 20kHz) | < 0.005% | ||||
| SNR | > 125 dB | ||||
| Max input voltage | +20 dBu | ||||
| AUDIO ANALOG OUTPUTS | |||||
|---|---|---|---|---|---|
| A/D Converter |
4 input channel with proprietary Tandem© architecture dual 24bit / 48KHz DAC | ||||
| Frequency response (-0.5 dB) | 20Hz – 22kHz | ||||
| THD + N (20Hz – 20kHz) | < 0.005% | ||||
| SNR | > 117 dB | ||||
| Max input voltage | +16 dBu | ||||
| NETWORK | |||||
|---|---|---|---|---|---|
| Network Connector | 2 AES3 inputs from main RJ45 ports (auto-sense) | ||||
| Latency from rear input to AESOP Network | 3 samples delay (62us @48KHz) | ||||
| AESOP Network Latency | Negligible propagation delay between daisy chained devices | ||||
| Network hop max length | 100m | ||||
| Network configuration | Auto IP, DHCP, manual | ||||
Powersoft reserves the right to change specifications without notice.
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