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:
- 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
