Wohler VMDA-SUM8 8-Channel Analog / Digital Continuity Monitor

Wohler VMDA-SUM8 8-Channel Analog / Digital Continuity Monitor

Wohler VMDA-SUM8 8-Channel Analog / Digital Continuity Monitor

B&H # WOVMDASUM8P MFR # VMDA-SUM8
Wohler VMDA-SUM8 8-Channel Analog / Digital Continuity Monitor

Wohler VMDA-SUM8 8-Channel Analog / Digital Continuity Monitor Back View

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Product Highlights

  • Eight Mono or Four Stereo Channels
  • Eight Individual Volume Controls
  • Headphone Output Mutes Speakers
  • 98 dB SPL at 2'
  • Output Limiter
  • VTR Bays, Mobile Production Vehicles
  • Extensive Magnetic Shielding
  • AES Over BNC
  • Electronic Noise Cancellation
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You Pay: $1,320.00

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  • 1Description

The Wohler VMDA-SUM8 8-Channel Analog / Digital Continuity Monitor provides self-powered, stereo or monaural monitoring in a 1U rack-size with a depth of only 4.5".

A total of eight monaural or four stereo channels can be summed together and monitored from the two speakers on the front panel. You can select either digital AES/EBU or standard analog audio input sources for each of the eight input channels to be monitored. The unit can be configured for stereo (four stereo channels) or monaural (eight mono channels) operation by setting an internal jumper.

In stereo mode, input channels 1, 3, 5, and 7 are summed to the left speaker and channels 2, 4, 6, and 8 are summed to the right speaker. In mono mode all eight channels are summed monaurally across both speaker channels. Eight volume controls on the front panel allow separate adjustment of each channel in the summing mix and a recessed trim pot on the front panel serves as a master volume control for all eight selected channels.

The front panel also features a power indication LED and headphone output jack. The headphone jack automatically mutes the speakers when engaged.

The rear panel features the analog inputs on a DB-25 connector and the AES digital inputs on four female BNC connectors. Termination is selectable for each of the four digital inputs. The unit is powered by an included external power supply.

The unit offers separate inputs that are then summed together. Separate volume controls allow the operator complete control of the output. These units contain three high performance transducers driven by three power amplifiers: one amplifier/driver combination handles midrange and high frequency information in stereo, while the second handles summed low frequency information below the 500 Hz crossover point.

The design provides a focused sound for operators in a 1 to 3' near field applications and functions in a manner similar to several separate monitor pairs, but without the same costs in terms of installation time and space required for speaker placement. This provides for a higher SPL for the operator while reducing the overall ambient sound of the adjacent bay crosstalk.

The extended high frequency response helps reveal potential problems with audio whine or hiss. Electronic rather than acoustic cancellation of bass frequencies provides positive audible detection of out-of-phase (reversed polarity) audio feeds. An output limiter circuit is installed to help protect the speakers and extensive magnetic shielding allows the device to be placed adjacent to video monitors without coloration.

Each channel has a digital / analog input select plus volume control
High quality drivers and power amplifiers
Analog inputs with individual volume controls (summed)
Full fidelity audio monitoring in only 1RU of rack space
Powerful 98 dB SPL at 2.0'
Thorough magnetic shielding allows placement next to video monitors
Extended frequency response and low distortion reveals issues with audio wine or hiss
Audible indication of phase / polarity provides instant information
Blowout proof speakers
Shallow depth
In the Box
Wohler VMDA-SUM8 8-Channel Analog / Digital Continuity Monitor
  • AC Power Cord
  • AC Power Adapter with 24 VDC Cord and Plug
  • Limited 1-Year Warranty on Parts & Labor (The warranty can be automatically extended, for audio products only, to a 24 month warranty by registering the serial number of your product online at Wohler's website within 6 months of shipment.
  • Table of Contents
    • 1Description
    Signals Monitored Analog: AES/EBU
    Input 8 x Balanced analog inputs on DB-25
    4 x Unbalanced AES input pair on BNC
    Output 1 x Balanced analog output on 1/4" phone jack
    Other Controls Other Rear Panel Controls: 4 x AES terminations (2 x 2-position DIPs)
    AES/EBU Input Termination Unbalanced: 75 ohms
    Sampling Rate AES/EBU Input Sampling Rate: Auto detection between 32 and 96 kHz
    Analog Input Impedance 100 ohms (Balanced)
    Aural Sound Outputs Headphone mutes speakers; left & right speakers
    Distortion Acoustic Distortion: Typically < 2.0% at below limiting threshold, 300 Hz to 10 kHz
    Electrical Distortion: < 0.30% at any level below limit threshold
    Magnetic Shielding < 2 Gauss any adjacent surface
    Frequency Response 1/6 Octave 300 Hz to 10 kHz (+ or -6 dB)
    Peak Acoustic Output at 2 feet 80 dB SPL
    Hum and Noise Better than -70 dB below full output
    Power Output For RMS Each Side
    Transient: 10 W
    Continuous: 5 W
    Power Consumption 45 W
    Rack Height 1 RU
    Dimensions 1.75 x 19.0 x 4.5" (45 x 483.0 x 114.0 mm)
    Weight 3 lb (1.3 kg)

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