dbx 640 6x4 Digital Zone Processor

With 6 inputs and 4 outputs the dbx ZonePRO® 640 provides 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 delivers the highest quality tools available. Even the input and outputs connectors were chosen for their standard usage and reliability. 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 buss that allows inputs to be sent from one unit to the next for unit and job scalability.

The 640 provides 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 our 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.

dbx 640 Features

• Advanced Feedback Suppression (AFS™)
• Autowarmth®
• Auto gain control
• Compression
• Limiting
• Noise gating
• Notch filtering
• Bandpass and crossover filters
• Parametric EQ
• Security lockout
• Wall panel control
• RS-232 control
• Windows® 2000 and XP GUI
• IEC, UL and CSA Approvals

• 640 6x4 Digital zone processor1

• Input(2) Switchable line or mic inputs, (4) RCA Source
• Input connectorsEuroblock (line and mic) RCA (source)
• Input typeelectronically balanced/RF-filtered
• Input impedance50k ohm balanced, >75k ohm unbalanced
• Max input+20dBu mic/line, +12dBu RCA
• CMRR>40dB, typically >55dB @ 1 kHz
• Mic preamp gain30 to 60dB
• Mic preamp EIN<-118dB
• Outputs4 total
• Output connectorsEuroblock
• Output typeelectronically balanced, RF filtered
• Output impedance120 ohms balanced, 60ohm unbalanced
• Max output+20dBu
• A/D converterType IV™ conversion system
• Digital outputRCA 24-Bit oversampling
• Sample rate48kHz
• Overall dynamic range>109 dB A-weighted, >106 dB unweighted
• THD+Noise0.003% typical at +4dBu, 1kHz, 0dB gain
• Frequency response20Hz - 20kHz, +/-0.5dB
• Interchannel crosstalk>80dB typical
• Propagation display0.6 msec
• Operating voltage100VAC 50/60Hz, 120VAC 60Hz and 230VAC 50/60Hz
• Power consumption29 W