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dbx ZonePRO 641 m Speaker Processor

Q&A SKU #J07248000000000
635.0 $635.00
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6x4 digital zone processor.

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 (see table for further information). 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

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ZonePRO 641 m Speaker Processor Specifications:

  • Network Traffic, Power
  • 6 Total (4) Switchable Mic or Line, (2) Unbalanced, Mono-Summed RCA Input Pairs
    • Euroblock (Line and Mic) RCA (Source)
      • Electronically balanced/RF-filtered
        • Euroblock: >50kÎ Balanced, >25kÎ Unbalanced, RF Filtered; RCA: >25kÎ Unbalanced, RF Filtered
        Max Input
        • +20dBu Mic/Line, +12dBu RCA
        • >40dB, typically >55dB @ 1 kHz
        Mic Preamp gain
        • 30 to 60dB
        Mic Preamp Equivalent Input Noise (EIN)
        • < -118dBu, 22Hz-22kHz, 150Î Source Impedance
        Mic Preamp Phantom Power
        • +15VDC
        • 4 total
        Output Connectors
        • Euroblock
        Output Type
        • Electronically Balanced, RF Filtered
        Output Impedance
        • 120Î Balanced, 60Î Unbalanced
        Max Output
        • +20dBu
        A/D Converter
        • dbx Type IV conversion system
        A/D Dynamic Range
        • (line) >113 dB, A-weighted, >110 dB unweighted
        Type IV Dynamic Range
        • >119dB, A-weighted, 22kHz; BW: >117dB, unweighted, 22kHz BW
        Digital Output Dynamic Range
        • >114 dB A-weighted, 110dB unweighted
        Sample Rate
        • 48kHz
        D/A Dynamic Range
        • 112 dB A-weighted, 109dB unweighted, 22kHz BW
        Dynamic Range
        • >109 dB A-weighted, >106 dB unweighted, 22kHz BW
        • 0.003% typical at +4dBu, 1kHz, 0dB gain
        Frequency Response
        • 20Hz - 20kHz, +/-0.5dB
        Interchannel Crosstalk
        • >80dB typical
        Propagation Delay
        • 0.6 msec
        Operating Voltage
        • 100VAC 50/60Hz, 120VAC 60Hz and 230VAC 50/60Hz
        Power Consumption
        • 29 W
        • <92.13
        Unit Weight
        • 6.05 lbs / 2.74 kg
        Shipping Weight
        • 8.2 lbs / 4 kg
        • 1.75" (1U) x 19" x 7.75" (45mm x 483mm x 197mm)
        Safety Agency Certifications
        • UL 600065, IEC 60065, EN 55013, E60065

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