dbx ZonePro 640m - 6-Input/4-Output Digital Zone Processor with 4 Mic/Line Inputs and LCD Display in Black Finish

The dbx ZonePro 640m is a high-performance 6-input/4-output digital zone processor designed to meet the demands of commercial audio installations with its advanced signal processing and control capabilities. The 640m offers a range of features that enhance flexibility and performance, making it a suitable choice for various audio applications.

With a total of six inputs and four outputs, the 640m provides robust connectivity options. It includes four balanced mic/line inputs via Euroblock connectors, which can be switched between mic and line levels, and two mono-summed pairs of unbalanced RCA inputs. Each mic/line input offers hardware-controlled gain adjustments, allowing precise control over microphone levels. The balanced Euroblock inputs have an impedance greater than 50k? and are RF-filtered to ensure clean signal transmission. The RCA inputs are also RF-filtered, with an impedance greater than 25k?. The maximum input line level is +20dBu for mic/line inputs and +12dBu for RCA inputs, accommodating a range of audio sources with high fidelity.

The 640m features a pre-configured architecture that simplifies setup and operation. It includes input processing, a central matrix, and output processing. Two configurable input insert positions and one output insert position allow for specific insert processing on individual channels. The device is equipped with AutoWarmth, a psychoacoustic function that maintains natural low-frequency response even when signal levels are reduced, ensuring consistent audio quality across all output zones.

A link bus feature allows for the duplication of the first six audio channels to another ZonePro device, facilitating system expansion and additional output zones if required. The front panel is designed for ease of use, featuring comprehensive signal metering, an informative LCD display, and user-specified controls. The LCD provides real-time information on source selection, page steering, zone volume, and mute status. The four independent six-segment lightpipe meters on the front panel offer visual feedback on output levels, ranging from -30 to +20 dBu.

The ZonePro 640m supports various control options, including Ethernet control for remote access and integration with network equipment. It can also be controlled via RS-232 and third-party control systems, providing flexibility in system management. Optional Zone Controllers are available for user-friendly control of functions such as volume, source selection, and presets. The ZonePro Designer software offers an intuitive interface for configuration, control, and monitoring, with a wizard-driven setup process that simplifies the configuration of system parameters.

In terms of performance, the 640m utilizes dbx Type IV conversion technology, ensuring high-quality audio with a dynamic range of over 113dB A-weighted and 119dB A-weighted with Type IV dynamic range. The device offers a frequency response of 20Hz to 20kHz with a total harmonic distortion plus noise (THD+N) of 0.003% typical at +4dBu. The interchannel crosstalk and crosstalk from input to output are both greater than 80dB, minimizing signal bleed and ensuring clear audio. The propagation delay is 0.6 milliseconds, maintaining precise audio synchronization.

The 640m is housed in a 19-inch rackmountable chassis with dimensions of 19 x 7.75 x 1.75 inches and weighs 6.05 lbs. It operates on a voltage range of 100-240 VAC and has a power consumption of 29 watts, with a shipping weight of 8.2 lbs.

Overall, the dbx ZonePro 640m offers advanced processing capabilities, versatile control options, and high-quality audio performance, making it a valuable addition to any commercial audio system.

Features

• 6-input/4-output digital zone processor with versatile connectivity
• Four balanced mic/line inputs (Euroblock) and two mono-summed RCA input pairs
• Hardware-controlled microphone gain and +15V phantom power for mic inputs
• Pre-configured architecture with input, central matrix, and output processing
• Two configurable input and one output insert position for tailored processing
• AutoWarmth technology for maintaining low-frequency response at reduced signal levels
• Link bus feature for duplicating audio channels to additional ZonePro devices
• Front panel LCD display with comprehensive signal metering and user-specified controls
• Four independent six-segment lightpipe output meters for visual feedback
• Ethernet control for remote access and integration with network equipment
• RS-232 and third-party control system compatibility
• Optional Zone Controllers for intuitive control of volume, source, and presets
• ZonePro Designer software for configuration, control, and monitoring with wizard-driven setup
• dbx Type IV conversion technology for high-quality audio processing
• Dynamic range: >113dB A-weighted, >110dB unweighted
• Frequency response: 20Hz - 20kHz, +/- 0.5dB
• Minimal THD+N: 0.003% typical at +4dBu
• Dimensions: 19 x 7.75 x 1.75 inches; Weight: 6.05 lbs
• Power consumption: 29 watts; Shipping weight: 8.2 lbs

Specifications

Front Panel LED Indicators

• Per Output: 4 Independent Six-Segment Lightpipe Output Meters that range from -30 to +20 dBu, Threshold Meters
• Other: LCD Display provides information about Source Selection, Page Steering, Zone Volume and Mute

Analog Inputs

• Number of Inputs: 6 Total (4) Switchable Mic or Line, (2) Unbalanced, Mono-Summed RCA Input Pairs
• Type: Euroblock (Mic/Line), RCA (Source)
• Impedance (Euroblock): >50kΩ Balanced, >25kΩ Unbalanced, RF Filtered
• Impedance (RCA): >25kΩ Unbalanced, RF Filtered
• Max. Input Line Level: +20dBu Mic/Line, +12dBu RCA
• CMRR: >40dB, typically >55dB @ 1kHz
• Mic Pre Gain: 30 to 60dB
• Mic Input Noise (E.I.N.): <-118dBu, 22Hz-22kHz, 150Ω Source Impedance
• Mic Phantom Power: +15VDC

Analog Outputs

• Number of Outputs: 4 Total
• Type: Electronically Balanced, RF Filtered Euroblock
• Impedance: 120Ω Balanced, 60Ω Unbalanced
• Max. Output Level: +20dBu

A/D Performance

• Type: dbx 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 Rate: 48kHz

D/A Performance

• Dynamic Range: 112dB A-weighted, 109dB unweighted, 22kHz BW

System Performance

• Dynamic Range: >109dB A-weighted, >106dB unweighted, 22kHz BW
• THD+N: 0.003% typical at +4dBu, 1kHz, 0dB gain
• Frequency Response: 20Hz - 20kHz, +/- 0.5dB
• Interchannel Crosstalk: >80dB typical
• Crosstalk input to output: >80dB
• Propagation Delay: 0.6 msec
• Operating voltage: 100 VAC, 50/60Hz, 120 VAC, 60Hz, 230VAC 50/60Hz
• Power Requirements: 29 Watts
• BTU Rating: <92.13 BTU

Physical Dimensions

• Dimensions: 19 x 7.75 x 1.75 inches
• Weight: 6.05 lbs
• Shipping Weight: 8.2 lbs