DBX ZonePRO 641M – 6×4 Digital Zone Processor

  • 6 Inputs / 4 Outputs
  • 4 Balanced Mic/Line Inputs
  • 2 Unbalanced, Mono-Summed RCA Input Pairs
  • Microphone Gain per Channel
  • Pre-Configured Architecture

$720.00 CAD

SKU: 691991401176 Category: Tag:


The dbx ZonePRO 641M – 6×4 digital zone processor 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 dbx ZonePRO 641M – 6×4 digital zone processor via Ethernet or RS-232. The Configuration Wizard within ZonePRO Designer guides users through the step-by-step configuration process of the 641m.

The ZonePRO® products have long been the obvious choice for managing commercial audio applications. They’re easy to install and use – thanks to step-by-step setup wizards – and they’re backed by long track record of dbx reliability. The fact that so many are in use in locations worldwide speaks to their popularity and dependable performance.

Recommended for: Installed.

Additional information

Weight 8.2 lbs
Dimensions 7.75 x 19 x 1.75 in


DBX ZonePRO 641M Digital Zone Processor Features:

  • 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


DBX ZonePRO 641M Digital Zone Processor Specifications:

Indicators Network Traffic, Power
Input 6 Total (4) Switchable Mic or Line, (2) Unbalanced, Mono-Summed RCA Input Pairs
Input Connectors Euroblock (Line and Mic) RCA (Source)
Input Type Electronically balanced/RF-filtered
Input Impedance Euroblock: >50kΩ Balanced, >25kΩ Unbalanced, RF Filtered; RCA: >25kΩ Unbalanced, RF Filtered
Max Input +20dBu Mic/Line, +12dBu RCA
CMRR >40dB, typically >55dB @ 1 kHz
Mic Preamp gain 30 to 60dB
Mic Preamp Equivalent Input Noise (EIN) < -118dBu, 22Hz-22kHz, 150Ω Source Impedance
Mic Preamp Phantom Power +15VDC
Output 4 total
Output Connectors Euroblock
Output Type Electronically Balanced, RF Filtered
Output Impedance 120Ω Balanced, 60Ω 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
THD+Noise 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
BTU <92.13
Unit Weight 6.05 lbs / 2.74 kg
Shipping Weight 8.2 lbs / 4 kg
Dimensions 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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