PLP428b Signature

The PLP428b Signature is a four-input, eight-output Digital Signal Processor (DSP) intended for use in standalone processors or system amplifiers for professional audio or high-end home audio.

The PLP428b Signature is a four input, eight output Digital Signal Processor (DSP) intended for use in standalone loudspeaker processor units and system amplifiers for professional audio or high end home cinema. Available in four performance levels and using only the best sounding components available, its unrivalled audio quality and feature set match the highest standards.

All connections on PLP428b Signature are internal multi-pin connectors. To build a full product, additional PCBs are needed with external connectors. See “Accessories” for details.

KEY FEATURES
• 4 inputs, 8 outputs
• dual-channel AES/EBU input
• 96kHz sample rate
• Unparalleled audio quality
• State-of-the-art digital processing
• Programmable User Interface
• Monitoring and permanent logging of key parameters such as temperature, signal level and gain reduction
• 800 FIR taps per output
• 250 presets
• Optional Dante and AES67 module available
• Prepared for AVB / MILAN (coming soon)
• Multiple display and GPI / GPO support
• Optional Tilt Sensor
• 8 DC inputs for potentiometers
• 8 current measurement AC inputs (optional)
• 8 temperature sensor inputs
• 100Mbit LAN with loop through
• Direct Drive capability for single ended XLR outputs, or balanced drive with a suitable output driver card

Please also see AN812: Common Features MK2 as well as the Application Notes on our website www.alldsp.com for additional information. To see all application notes and detailed technical information, please request a login by sending an email to [email protected]. Some of the listed features are optional. Please contact us for detailed information.
Parameter Value Unit
Analog Inputs (electronically balanced) 4
Dynamic Range 135 dB(A)
Input Impedance (balanced) 21
Input Impedance (single ended) 10.5
Delay 2000 ms
Digital Inputs 2
Analog Outputs 8
Dynamic Range 120 dB(A)
Maximum Output Level 18 dBu
Output Level Selection +6, +12, +18 dBu
Noise Floor -102 dBu(A)
Source Impedance 157/235/470 Ω
Delay 50 ms
Input-to-output latency 528 µs
Gain (without amplifier, DSP only) 0 +/- 0.5 dB
Dynamic Range (unity gain, DSP only) 120 dB(A)
THD 0.0007 %
Frequency Response (DSP only) 20…20k Hz
Frequency Response (DSP only) 10…40k Hz
DSP 64 bit multimode ALLDSP AM685
Number of processors 5
Sample rate 96 kHz
FIR 8x800 taps
Presets 250
PEQ (per channel) 10 bands
Grouping EQ (each input) 5 bands
Compressors (per channel) 4 bands
Limiter (switchable true RMS / Zero Attack, each in and out) 1 bands
Analog Supply Voltage VCC / VSS +/- 15 V
Optional additional supply voltage (VDD) 6 V

All values, specifications, features, and other statements are for information purposes only and do not constitute a guarantee. Specifications are measured in real-life environments. Due to manufacturing differences, deviations can occur. All information may be changed by ALLDSP without notice.

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