Loyola Enterprises

A veteran and minority owned SDB Certified Business.


DBX ZonePro 640, 641

757.498.6118 Ext - 109DBX ZonePro 640 - Call for pricing - Processor with face
757.498.6118 Ext - 109DBX ZonePro 641 - Call for pricing - Processor by remote


PDFDBX ZonePro 640 Cut Sheet (pdf)

PDFDBX ZonePro 641 Cut Sheet (pdf)

PDFDBX ZonePro 640,641 Manual (pdf)

PDFDBX ZonePro Brochure (pdf)

PDFDBX ZonePro App. Guide (pdf)

With 6 inputs and 4 outputs the dbx ZonePro™ 640 and 641 provide flexible signal routing, powerful DSP processing and multiple control interfaces for Commercial Audio applications.

Designed to offer superior system sonic performance and flexibility, the 640/641 deliver the highest quality tools available. The ZonePro products offer Euroblock connectors for balanced signals and RCA connectors for interfacing with consumer equipment often used in commercial applications; there is also a simple analog input bus that allows inputs to be sent from one unit to the next for unit and job scalability. The 640/641 provide every necessary processing tool, from the input processing like gain control and EQ available on all inputs to highly sophisticated and specific functions such as selectable paging microphone processing including Gating, De-Essing, Auto Gain Control, Compression and Feedback Suppression.

The heart of the ZonePro products is the Routing module that provides of course Primary Source Selection but also Source Ducking for Paging and Priority Override. The outputs also offer a wealth of processing designed for commercial applications like the patent-pending AutoWarmth® function that was co-developed with JBL to provide natural low frequency extension at any signal level. Each output also offers EQ, Bandpass and Crossover filters, Limiting and Delay for system optimization. With the ZonePro every tool is at your disposal to maximize the response of your system.

Beyond processing, the ZonePro™ products offer multiple forms of control to further extend the versatility of your system. From easy-to-use wall panel Zone Controllers for standard end-user functions like source select and volume control to advanced system control including a built-in Real Time Clock that can provide programmable system changes throughout the day or week. For system setup and monitoring the ZonePro Designer software provides an intuitive interface and a speedy setup Wizard for configuring and editing all system parameters.


  • Advanced Feedback Suppression (AFS™)
  • Autowarmth®
  • Auto Gain Control
  • Compression, Limiting, Noise Gating
  • De-Essing
  • Delay
  • Notch Filtering
  • Input Highpass Filters
  • Bandpass and Crossover Filters
  • Parametric EQ
  • Security Lockout
  • Wall Panel Control
  • RS-232 Control
  • Event Scheduler
  • Windows® 2000 and XP GUI
  • IEC, UL and CSA Approvals

Analog Inputs
Analog Inputs 6 Total; (2) Switchable Mic or Line, (4) Unbalanced, Mono-Summed RCA Input Pairs
Input Type Euroblock (Mic/Line), RCA (Source)
Input Impedance (bal./unbal.) >50 kΩ / >25 kΩ
Max. Input Level +20 dBu Mic/Line; +12 dBu RCA
Input CMRR >40 dB, typ >55 dB @ 1 kHz
Mic Pre Gain 30 to 60 dB
Mic EIN <-118 dBu, 22Hz-22kHz, 150 Ω
Phantom Power 15 VDC
Analog Outputs
Analog Outputs 4 Total
Output Type Electronically Balanced, RF Filtered Euroblock
Output Impedance (bal./unbal.) 120 Ω / 60 Ω
Max. Output Level +20 dBu
A/D Performance
Type dbx Type IV™ Conversion System
Dynamic Range Line (A-weighted/unweighted) >113 dB / >110 dB
Type IV Dynamic Range (A-weighted/unweighted) >119 dB / >117 dB
Sample Rate 48 kHz
D/A Performance
Dynamic Range (A-weighted/unweighted) 112 dB / 109 dB
System Performance
Dynamic Range (A-weighted/unweighted) >109 dB / >106 dB
THD+Noise @ 1 kHz 0.003% typ. @ +4 dBu, 0 dB gain
Frequency Response (±0.5dB) 20 Hz–20 kHz
Interchannel Crosstalk >80 dB
Propagation Delay 0.6 msec
Operating Voltage 100-240 VAC, 50/60 Hz
Power Requirements 29 Watts
BTU Rating <92.13 BTU
Weight 3.1 kg (6.8 lbs)
Dimensions (HxWxD) 4.45 x 48.3 x 19.7 cm (1.75" x 19" x 7.75")
Safety Certifications UL 60065, IEC 60065, E 60065, EN 55013
For pricing options and packages, contact us at
757.498.6118 Ext - 109, Or