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The ARK-70 is the latest in the series of digital processors offering 4 different versions (analogue or digital and Ethersound optional*).


  • Multipurpose hall, conference room
  • Church
  • Background music square
  • Lounge Bar, Pub, Disco
  • Stateroom, restaurant for wedding reception


Power supply 85-240 V ~ 40-400 Hz. IEC connector. (Switching power supply, wide range).
Consumption 30 W.
Operating temperature -5º to 60º C (23º to 140º F).
Storage temperature -60º to 75º C (-76º to 167º F).
Humidity Max. 90% non-condensing.
Dimensions 482 x 45 x 226 mm.
Weight 3 Kg
Warranty 3 years


2 / 4
Impedance: 20 K Ohm Balanced (10 K Ohm unbalanced).
Connector: Balanced XLR (pin 2 +)
AD converter: 24 bit-192KHz, 512x Oversampling
Dynamic Range: 120 dB.
Max. level: +19 dBu (balanced).
Digital AES/EBU: Optional.
4 / 6 / 8
Impedance: 50 Ohm Balanced (25 Ohm unbalanced).
Connector: Balanced XLR (pin 2 +).
DA converter: 24 bit-192KHz, 512x Oversampling.
Dynamic Range: 120 dB.
Max. level: +18 dBu (balanced).
Digital AES/EBU: Optional.
Frequency Range 10 Hz – 24 KHz.
THD (%) <0,0018%
DSP Process Internal resolution with 56 bit double precision in floating point.
Converters 24 bit resolution
Propagation Delay 0.6 miliseconds
Input GEQ / PEQ 29 GEQ Bands or 29 parametric filters per input.
PEQ output PEQ Type filtersParametric, Shelving High, Shelving Low, Low-Pass, High-Pass, Low-Pass Q variable, High-Pass Q variable, BandPass, Reject Band, AllPass order 1, AllPass order 2.Possibility to Link filters between Input and Outputs.
Linkwitz Riley with 12, 24, 48 dB/oct.
Butterworth and Bessel with 6, 12, 18, 24, 30, 36, 42 and 48 dB/oct.
Input 190 milisec. (channels A & B) / 54 milisec. (channels C & D)
Output 20.8 milisec for Speaker alignment. Possibility to Link Delays.
RMS Limiter-Compressor
1 per output.
Threshold +18dBu to -50dBu.
Compression Ratio 1:1 to 1:10 (1:infinite with limiter).
Power indication Shows the maximum power applied to the speaker for the selected threshold.
Peak Limiter
1 per output
Threshold +18dBu to -50dBu.
Peak Indication Shows the maximum peak Voltage applied to the speaker for the selected threshold.


Noise Gate
1 per Output
Noise Threshold: -79dBu to -37dBu
Level Control
Gain +6dBu to -40 dBu per input / output.
Mute per input / output.
Phase inversion per input / output. Possibility to Link Controls.
Signal Generator
Level 0dBu to –40dBu
Type sine tone from 10Hz to 22KHz, Pink noise, White noise.
Security Options
Password Global
Level 0: No restrictions
Level 1: Only allows preset changes.
Level 2: Only allows mute modification.
Level 3: Only allows preset changes and mute modification.
Level 4: Bloks all the front panel controls
Restricted Zones: For each Preset it is possible to disable the access to any processor function (EQ, crossover, Limiter, etc) writing a preset password.
Other functions
Atmospheric compensation by Air absorption.
  Process Integration with RAINBOW – The acoustical prediction software.
Speaker data import from main audio measurement systems.
  Export & Import EQ files, etc.
Front Panel
 Display LCD with 24 x 2 characters
 Encoders 3
 Buttons Navigator with 5 backlight buttons.
12 buttons for Edition and Mute with light indications.
 Level Meter 7 leds per input/output, -40db, -6db, 0db, +6db, +12db, Limit, Over Limit.