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 Test Condition Min Typ Max Unit
min typ max
Analog Inputs (electronically balanced) 4
Dynamic Range < 1% THD, A wtd130 135 dB(A)
Max. Input Level < 1% THD23 dBu
Input Impedance (balanced) 21
Input Impedance (single ended) 10.5
Delay 2000ms
Digital Inputs 2 6
Analog Outputs 8
Dynamic Range Max. level limited by DSP (A wtd)116 120 dB(A)
Maximum Output Level Limited by DSP18dBu
Output Level Selection +6, +12, +18dBu
Noise Floor Default setting, Channel muted -102 -98dBu(A)
Source Impedance 157/235/470Ω
Delay 50ms
Digital Outputs 4
Input-to-output latency FIR disabled, unity gain528µs
Gain (without amplifier, DSP only) 0 +/- 0.5dB
Dynamic Range (unity gain, DSP only) < 1% THD, A wtd116 120 dB(A)
THD 0 dBu, 1kHz, unity gain, DSP only, 2 channels 0.0007 0.002%
Frequency Response (DSP only) 0 dBu, unity gain, DSP only, +/- 0.5 dB20…20kHz
Frequency Response (DSP only) 0 dBu, unity gain, DSP only, +0.5 / -3 dB10…40kHz
DSP 64 bit multimode ALLDSP AM685
Number of processors 5
Sample rate 96kHz
FIR 8x800taps
Presets 250
PEQ (per channel) 10bands
Grouping EQ (each input) 5bands
Crossover (each input, LPF and HPF) 24dB/Oct
Crossover (each output, LPF and HPF) 48dB/Oct
Compressors (per channel) 4bands
Limiter (switchable true RMS / Zero Attack, each in and out) 1bands
Analog Supply Voltage VCC / VSS +/- 12 +/- 15 +/- 16V
Optional additional supply voltage (VDD) 6V
Current consumption VCC (using optional VDD) 150mA
Current consumption VCC (without optional VDD) 500mA
Current consumption VSS 150mA
Current consumption VDD 600mA
Temperature 0 50ºC
Humidity 80%RH

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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