DBX ZonePRO 641m Digital Zone Processor

DBX ZonePRO 641m

The dbx ZonePRO 641m 6x4 Digital Zone Processor can distribute up to six audio sources across 4 mono output zones. The included software will allow you to adapt the input/outputs quickly to fit your needs.


Dbx ZonePRO 641m 6x4 Digital Zone Processor

Product Highlights
  • 4 Independent Mono Output Zones
  • 4 Balanced Mic/Line Inputs
  • Microphone Gain per Channel
  • 2 Unbalanced Mono-Summed RCA Input Pairs
  • ZonePRO Control Software via Ethernet
  • Supports ZC-Series Remote Controls
  • Two Software Inserts per Input Channel
  • One Software Insert per Output Zone
  • AutoWarmth per Output Zone
  • Link Bus Daisy Chains to another ZonePRO

The ZonePRO 641m's pre-configured architecture keeps the input/output addresses fixed and simple. It has four balanced Euroblock mic/line inputs with gain control, and two unbalanced, mono-summed RCA input pairs. Its four zones output from balanced, line-level Euroblock connectors. 

Once the analog cables are connected, your audio system can be controlled and fine-tuned in the ZonePRO Designer software from your Windows-based PC. The output zones all have individual tone controls, including AutoWarmth and one DSP insert, for optimally tuning the speaker system to the room. To make the most of each source, the ZonePRO 641m also has independent EQ and two selectable DSP inserts for each of the 6 inputs. 

The ZonePRO Designer software can be set and forgot, or it can be programmed with "Scene" changes that take effect automatically throughout the day. If you're using the ZonePRO 641m in a restaurant that gets busier as the night goes on, an increased volume and bass response could be set to engage daily at 10pm. A subwoofer could be attached to its own zone output, and set to only be in use between 11pm and 1am. 

In addition to programmed changes, the ZonePRO 641m can be controlled manually with dbx ZC-series remote controls. Wallmounted within output zones, ZC controls vary from a simple volume control to a rotary input-source selector. The ZonePRO 641m supports up to 12 remote controls. 

The Link Bus allows the ZonePRO 641m's inputs to be routed to another ZonePRO product to double its output zones. Up to 3 ZonePRO processors can be daisy-chained.

ZonePRO Designer Software
Compatible with Windows 2000/XP/Vista/7, the ZonePRO Designer software provides a wide range of options for configuring the 641m's inputs and outputs. Software inserts can apply DSP effects processing to sources and zones, and be automatically set to change on a daily schedule.
DSP effects processing
Corrective and dynamics processing can be applied individually to each of the input sources and output zones through the ZonePRO Designer software. Effects include AutoWarmth, automatic gain control, ambient noise compensation, notch filter, compressor, gate, de-esser, and advanced feedback suppression.
User friendly pre-configured input/output architecture
The analog cabling of the dbx ZonePRO 641m is straight-forward and uncomplicated, making your inputs/outputs much easier to recognize and control from within the software.
Supports ZC-series remote controls
The ZC-series remote controls can toggle volume, input source, and Scenes. They extend from the 641m by CAT 5 Ethernet cable, and can be mounted in an output zone up to 1,000 feet (304.8 m) away.
PC and third-party connectivity
The 1260m can connect to a Windows-based PC or a third-party controller by either Ethernet or RS-232 serial port.


InputsEuroblock mic/line x4 
Unbalanced, mono-summed RCA input pairs x2
Phantom Power+15VDC
Input ImpedanceEuroblock: 
>50kΩ balanced 
>25kΩ unbalanced
>25kΩ unbalanced
Maximum Input Level+20dBu mic/line, +12dBu RCA
CMRR> 40dB, typically >55db @ 1kHz
Mic Pre Gain30 to 60dB
Mic Input Noise (E.I.N.)< -118dBu, 22Hz-22kHz, 150Ω source impedance
OutputsBalanced, RF filtered Euroblock x4
Output Impedance120Ω balanced 
60Ω unbalanced
Maximum Output Level+20dBu
A/D Conversiondbx 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 Rate48kHz
D/A ConversionDynamic range:
112dB A-weighted, 109dB unweighted, 22kHz BW
DSP EffectsAvailable on Input Inserts: 
Automatic gain control 
Notch filter 
Advanced feedback suppression 

Available on Output Inserts: 
Automatic gain control
Ambient noise compensation
Dynamic Range>109dB A-weighted 
>106dB unweighted
THD + N0.003% typical at +4dBu, 1kHz, 0dB gain
Frequency Response20 - 20,000 Hz, +/- 0.5dB
CrosstalkInterchannel: >80dB typical
Input to output: >80dB
Propagation Delay0.6 msec
Computer ConnectivityEthernet RJ45 x1 

RS-232 serial port x2 
(not to be used at once)
Operating Systems SupportedWindows 2000/XP/Vista/7 
No 64-bit support
Remote Control InputRJ-45 x2
Up to 6 ZC-series remotes can be connected to each input

Wired in series: supports total distance of 300 ft (91.4 m) of CAT 5 cable 
Wired in parallel using ZC-BOB: up to 1,000 ft (304.8 m) each
Operating Voltage100 VAC, 50/60Hz, 120 VAC, 60Hz, 230VAC 50/60Hz
Power Consumption29 watts
Dimension (D x W x H)1U rackmount: 7.75" x 19" x 1.75" (19.69 x 48.26 x 4.45 cm)
Weight6.8 lbs (3.1 kg)

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