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Digital Zone Processor/Router, 6 x 4


The ZonePRO 641m offers fixed I/O, pre-configured architecture, configurable insert processing and optional duplication of audio channels to another ZonePRO device via a link bus.
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The ZonePRO 641m offers fixed I/O, pre-configured architecture, configurable insert processing and optional duplication of audio channels to another ZonePRO device via a link bus.

The 641m features a total of six inputs and four outputs. Inputs include four balanced mic/line switchable terminal block inputs and two mono-summed pairs of unbalanced RCA inputs. Hardware-controlled microphone gain allows adjustment of microphone gain per channel.

The 641m device has a pre-configured architecture with input processing, a central matrix and output processing. Two input insert positions and one output insert position allow channel-specific insert processing to be configured. AutoWarmth, a psychoacoustic function that maintains full frequency bandwidth even when the signal level has dropped, is permanently available on each output zone.

A link bus allows duplication of the first six audio channels to another ZonePRO device in applications where additional output zones are required.

The front panel of the 641m features a power status LED, a network traffic LED, and an RS-232 control port.

Additional system control is offered in the form of optional Zone Controllers. This collection of hardware wall-controllers represents a series of simple, elegant user interfaces for functions such as volume, source and preset control.

All ZonePRO devices can be controlled by third party control systems via RS-232 or Ethernet as applicable. ZonePRO Designer - the configuration, control and monitoring software for the ZonePRO family of devices - offers control of the ZonePRO 641m via Ethernet or RS-232. The Configuration Wizard within ZonePRO Designer guides users through the step-by-step configuration process of the 641m.


  • 6 inputs/4 outputs
  • 4 balanced mic/line inputs
  • 2 unbalanced, mono-summed RCA input pairs
  • Microphone gain per channel
  • Pre-configured architecture
  • Two configurable input insert positions
  • One configurable output insert position
  • AutoWarmth per output zone
  • Link bus
  • Optional ZC controllers
  • Ethernet control
  • Serial control
  • Third party control
  • Wizard-driven configuration


  • Front Panel LED Indicators: Network Traffic, Power
  • Analog Inputs: 6 total (4) Switchable mic or line, (2) unbalanced, mono-summed RCA input pairs
    Type: Euroblock (Mic/Line), RCA (Source)
    Impedance (Euroblock): >50k ohm Balanced, >25k ohm Unbalanced, RF filtered
    Impedance (RCA): >25k ohm Unbalanced, RF filtered
    Max. Input Line Level: +20dBu Mic/Line, +12dBu RCA
    CMRR: >40dB, typically >55dB @ 1kHz
    Mic Pre Gain: 30 to 60 dB
    Mic Input Noise (E.I.N.): <-118dBu, 22Hz-22kHz, 150 ohm Source Impedance
    Mic Phantom Power: +15VDC
  • Analog Outputs: 4 total
    Type: Electronically balanced, RF filtered Euroblock
    Impedance: 120 ohm Balanced, 60 ohm Unbalanced
    Max. Output Level: +20dBu
  • A/D Performance
    Type: dbx Type IV Conversion System
    Dynamic Range Line: >113dB, A-weighted, >110dB unweighted
    Type IV Dynamic Range: >119dB, A-weighted, 22kHz; BW: >117dB, unweighted, 22kHz BW
    Sample Rate: 48kHz
  • D/A Performance
    Dynamic Range: 112dB A-weighted, 109dB unweighted, 22kHz BW
  • System Performance
    Dynamic Range: >109dB A-weighted, >106dB unweighted, 22kHz BW
    THD+N: 0.003% typical at +4dBu, 1kHz, 0dB gain
    Frequency Response: 20Hz-20kHz, +/-0.5dB
    Interchannel Crosstalk: >80dB typical
    Crosstalk input to output: >80dB
    Propagation Delay: 0.6 msec
  • Power Requirements
    Operating Voltage: 100 VAC, 50/60Hz, 120 VAC, 60Hz, 230VAC 50/60Hz
    Power Consumption: 29 watts
    BTU: <92.13
  • Weight: 6.8 lbs
  • Dimensions: 1.75" (1U) x 19" x 7.75"
  • Safety Agency Certifications: UL 60065, IEC 60065, E 60065, EN55013

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