dbx ZonePRO 640m is a digital zone processor providing fixed I/O, pre-configured architecture, configurable insert processing and optional duplication of audio channels to another ZonePRO device via a link bus.
The 640m 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 640m 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.
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
Comprehensive Signal Metering
Front Panel LCD
User-Specified Front Panel Control
Optional ZC Controllers
Ethernet Control
Serial Control
Third Party Control
Wizard-Driven Configuration
Indicators: 4 Independent Six-Segment Lightpipe Output Meters that range from -30 to +20 dBu, Threshold Meters
LCD Display: LCD Display provides information about Source Selection, Page Steering, Zone Volume and Mute
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)
