Wohler AMP2-E8-MDA-3G 8-Channel Dolby Audio Monitor

Wohler AMP2-E8-MDA-3G 8-Channel Dolby Audio Monitor

Wohler AMP2-E8-MDA-3G 8-Channel Dolby Audio Monitor

Wohler AMP2-E8-MDA-3G 8-Channel Dolby Audio Monitor


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  • 1Description

The AMP2-E8-MDA-3G 8-Channel Dolby Audio Monitor from Wohler Technologies is an in-rack audio monitor capable of outputting and displaying encoded, multi-channel (up to 8 channels) audio from Dolby E or Dolby Digital streams, de-embedded from either 3G-SDI, HD-SDI, or SD-SDI. The ability to switch seamlessly between encoded or discretely embedded sources, in addition to providing full, simultaneous demuxed output of the multichannel source, this audio monitor offers enhanced operational capability in a single monitor unit. This monitor features 3 audiophile-quality drivers, 3 power amplifiers, 2 speakers and amplifiers that reproduce midrange and high frequency information in stereo, while a third amplifier / driver combination handles summed LF information below the 500 Hz crossover point.

The sleek design provides optimally focused sound for operators in an ultra near field environment 1 to 3' (0.3 to 0.9m) and offers performance comparable to that of many separate monitor pairs without installation hassles and awkward speaker placements. This enables a higher SPL for the operator while reducing overall ambient sound and adjacent bay crosstalk. Extended HF response reveals potential problems with audio whine or hiss, and electronic, rather than acoustic, cancellation of bass frequencies provides positive audible detection of reversed polarity audio feeds. This audio monitor is designed for high quality, multi-channel, digital, and analog audio monitoring in a compact unit. It is suitable for VTR bays, mobile production vehicles, teleconferencing installations, multimedia systems, satellite links, cable TV facilities, and on-air radio studios.

Powerful 104 dB SPL at 2' (0.6m)
Premium quality drivers and power amplifiers
Excellent frequency response and low distortion
Audible indicators for phase/polarity problems
Headphone jack (mutes speakers)
Phase correlation display of selected channels
Eight 53-segment tri-color LED bar graphs display simultaneous VU and PPM
Thorough magnetic shielding for placement next to sensitive equipment and video monitors
Front panel summing of any combination of up to 8 channels to the left and/or right speakers and selected analog outputs
Select the channel or channel pair that you want in the left, right, or both speakers, or select a predefined downmix.
4 presets let you change the entire system configuration with the press of a single button.
Separate brightness adjustments for left and right level meters.
Decodes, monitors, and plays decoded Dolby E or Dolby Digital bitstreams.
Display phase indication with the press of a single button.
LCD screen displays signal type, 3G/HD/SD-SDI group, Dolby program and more.
In the Box
Wohler AMP2-E8-MDA-3G 8-Channel Dolby Audio Monitor
  • Limited 1-Year Warranty on Parts & Labor
  • Note: 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
    Input 4 x Unbalanced AES/PCM pairs (BNC)
    4 x Balanced AES pairs (1 DB-25)
    2 x Dolby E/AC-3 (BNC)
    2 x 3G/HD/SD-SDI (BNC)
    8 x Channels analog
    1 x DB-25
    Output 1 x Reclocked 3G/HD/SD-SDI (BNC)
    4 x Unbalanced AES (1 x HD-15)
    5 x Decoded Dolby E/AC-3 (BNC)
    8 x Channels metered analog (1 x DB-25)
    2 x Selected downmix analog (2 x XLR)
    Other Connectors Other Rear Panel Connectors
    3 x RS-232 (DB-9)
    2 x Selected downmix analog (2 x XLR)
    4 x 10-position recessed rotary pots
    1 x 2-position switch (for RS-232C)
    AES/EBU Input Termination Balanced: 110 Ω
    Unbalanced: 75 Ω
    SDI Input Termination HD-SDI Input termination: 75 Ω unbalanced
    Level Meters 8 x 53 segment
    Level Meter Scale 0 to -66 dB
    Level Meter Threshold 0, +4, +6 or +8dBv: switch selectable
    Level Meter Dynamics Simultaneous VU & PPM
    Resolution Midscale Resolution: 1 dB
    Frequency Response 1/6 Octave 80 Hz to 16 kHz (±5 dB) (-10 dB @ 40 Hz, 20 kHz)
    Analog Input Impedance >40 kΩ balanced
    Reference Analog Reference: +8, +6, +4, or 0 dBu
    Digital Reference: -20, -18, or -9 dBFS
    Distortion Acoustic Distortion: 6% or less worst case frequencies above 140 Hz including cabinet resonance, typically < 1.5%
    Electrical Distortion: <0.15% at any level below limit threshold
    Hum and Noise Better than -68 dB below full output
    Peak Acoustic Output at 2 feet 104 dB SPL
    Magnetic Shielding <0.8 gauss any adjacent surface
    Power Requirements Power to the unit is 100 to 240 VAC ± 10%, 50/60 Hz
    Power Output RMS Each Side: 10 W, 14 W peak
    RMS Center Woofer: 25 W, 35 W peak
    Power Consumption 60 W
    Space requirements 2 RU in a standard 19.0" (48.2 cm) rack
    Rack Height 2 RU
    Dimensions 3.5 x 19.0 x 12.0" (89.0 x 483.0 x 305.0 mm)
    Weight 22.0 lb (9.98 kg)

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