The DP-K1 Digital Signal Processor is a versatile and powerful solution for a wide range of installed sound applications, including houses of worship, sports arenas, convention centers, airports, and more. Its modular design supports up to eight mic/line inputs and eight line outputs, providing flexible and scalable audio management.
Featuring TOA’s advanced Automatic Resonance Control (ARC) technology, the DP-K1 automatically detects problematic room modes and applies corrective filters to enhance speech intelligibility and overall sound quality in acoustically challenging environments. The unit also offers comprehensive audio processing tools such as multi-band parametric filters, compressors, limiters, noise gates, crossovers, and delay settings.
With full input-to-output matrixing, users can create and recall custom routing configurations ideal for multi-zone or room-combining scenarios. Programming is done easily via PC control software with built-in network connectivity for remote access and monitoring. Backed by a five-year warranty, the DP-K1 ensures reliable, professional-grade performance for complex AV systems.
Key Features – DP-K1 Digital Signal Processor
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Modular design supporting up to 8 mic/line inputs and 8 line outputs
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TOA’s proprietary Automatic Resonance Control (ARC) for improved speech intelligibility
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Multi-band parametric filters, compressors, limiters, noise gates, crossovers, and delay
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Full input-to-output matrixing with storage and recall for multi-zone/room-combining setups
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PC software programming with built-in network interface for remote control and monitoring
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Flexible contact-closure remote control capability
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Suitable for diverse environments: houses of worship, sports facilities, airports, convention centers, and more
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Five-year product warranty ensuring long-term reliability
TOA DP-K1 Specifications
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Power Source
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100 - 120 V AC, 50/60 Hz
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Power Consumption
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40 W (750 mA)
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Frequency Response
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20 - 20,000 Hz, ±1 dB (+4 dB* input)
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Input
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Max. 8 channels, modular construction (modules optional)
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Output
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Max. 8 channels, modular construction (modules optional)
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IO Configuration
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2-IN/4-OUT, 2-IN/8-OUT, 4-IN/4-OUT, 4-IN/8-OUT, 6-IN/4-OUT,
6-IN/8-OUT, 8-IN/4-OUT, 8-IN/8-OUT
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Signal processing
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Automatic Resonance Control Function
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Parametric equalizer: 20 - 20,000 Hz, ±12 dB, Q: 0.267 - 69.249
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Level Control
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- to +12 dB (0.5 dB steps), with polarity selector
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Equalizer/Filter
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Parametric equalizer: 20 - 20,000 Hz, ±12 dB, Q: 0.267 - 69.249
Filtering: High-pass filter 20 - 20,000 Hz, 6 dB/oct, 12 dB/oct
Low-pass filter 20 - 20,000 Hz, 6 dB/oct, 12 dB/oct
Notch filter 20 - 20,000 Hz, Q: 8.651 - 69.249
All-pass filter 20 - 20,000 Hz, Q: 0.267 - 69.249
High shelving filter 6 - 20 kHz, ±12 dB
Low shelving filter 20 - 500 Hz, ±12 dB
Horn equalizer 20 kHz, 0 to +18 dB (0.5 dB steps)
Crossover filter: 20 - 20,000 Hz,
6 dB/oct, 12 dB/oct, 18 dB/oct, 24 dB/oct
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Compressor
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Threshold: -16 to +24 dB* (1 dB steps)
Ratio: 1:1, 2:1, 3:1, 4:1, 8:1, 12:1, 20:1, :1
Attack time: 0.02 - 100 ms
Release time: 10 ms - 5 s
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Noise gate
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Threshold: - to -26 dB* (1 dB steps)
Attack time: 0.1 - 100 ms
Release time: 20 ms - 5 s
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Delay
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Delay time: 0 - 682.0 ms (0.021 ms steps)
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Matrix
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8 × 8
Level control: - to 0 dB (1 dB steps), with polarity selector
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Preset Memory
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8
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Auxiliary Function
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Key lock function
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Setting Software
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OS: Windows 2000/XP
Control system: 10 BASE - T/100 BASE-TX, Auto-Negotiation, RJ45 connector
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Front Panel Section
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Preset memory recall knob: 1
Input indicator: Green LED
Output indicator: Green LED
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Module Slot (Rear Panel)
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Input module slot: 4
Output module slot: 2
Remote control module slot: 1
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Operating Temperature
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+5℃ to +40℃
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Finish
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Panel: Aluminum, hair-line finish, black
Others: Pre-coated steel plate, black, 30% gloss
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Dimensions
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482.6 (W) × 132.6 (H) × 320 (D) mm (excluding projection)
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Weight
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7.4 kg
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Accessory
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Power cord (2 m) ……1,
Rack mounting bracket (preinstalled on the unit) ……2,
Rack mounting screw ……4,
Blank panel (preinstalled on the unit) ……8,
Module mounting screw (spare) ……4, CD (software) …1
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Option
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Mic/Line input module: D-921E, D-921F, D-922E, D-922F
Stereo input module: D-936R
Digital input module: D-923AE, D-937SP
Line output module: D-971E, D-971M, D-971R
Digital output module: D-972AE, D-961SP
Remote control module: D-981, D-983
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