Wohler AMP1-S8MDA
8 Channel Audio Monitor


The AMP1-S8MDA multi-format audio monitor is a complete, exceptionally high quality audio monitoring solution capable of monitoring audio from HD-SDI, SD-SDI, AES/EBU, and analog signal sources.

The unit is one rack-space in height (1U) and installs into an industry standard 19" wide rack.

A significant feature of the unit is the ability to process and monitor up to eight channels from an HD-SDI or SD-SDI bit stream, two sets of four AES/EBU signal pairs (balanced and unbalanced), or eight balanced analog channels.

Eight high-resolution 26-segment tri-color LED bargraph audio level meters provide accurate and instantaneous visual level monitoring at a glance.

A convenient high-contrast LCD display on the front panel shows the user settings and status (as currently selected), type of signal, channel selection, mute status, and alternately, phase/correlation.

Input presets may be configured and easily recalled by the user.

The unique acoustic design of the AMP1-S8MDA provides optimally focused sound in an Ultra Near Field tm (1 to 3 feet) environment, which allows higher SPL for the operator while reducing overall ambient sound and adjacent bay crosstalk.

The audio amplifier section features five high performance transducers driven by three power amplifiers: two amplifier/driver combinations handle midrange and high frequency information in stereo (left and right speakers), while the third center channel reproduces information below the 500 Hz crossover point (woofer speaker).

Output limiter circuits are incorporated to protect the speakers, and extensive magnetic shielding allows placement immediately adjacent to magnetically sensitive equipment, such as video monitors.

Wohler AMP1-S8MDA Features:

  • Signal Inputs: 8 Balanced Analog Inputs on DB-25; 4Unbalanced AES Input Pairs on BNC; 4 Balanced AES Input Pairs on D 25; 23G/HD/SD-SDI Inputs on BNC
  • Signal Outputs: 2 Balanced Analog Outputs Summedfrom Selected Source on XLR; 8 Balanced Analog Outputs from Selected Source onDB-25; 4 Balanced AES Loop-through Output Pairs on DB-25; 4 Balanced AESOutputs from SDI on DB-25; 1 3G/HD/SD-SDI Reclocked Output on BNC
  • Data Ports: 2 RS-232 Connector for programming, setupand diagnostics
  • Comprehensive downmix capability; Phase correlationindication; Software is field upgradable
  • Other Features (2): Storage for ten preset monitoringsettings for easy recall
  • Other Features (3): Alternate scales, color mappings and features such asphase correlation or sum & difference may be specified at the time oforder

Wohler AMP1-S8MDA Specifications:

  • Audio:
    • AES/EBU Input Termination: 110 ohms balanced; 75 Ohms unbalanced (DIP Selectable on rear panel)
    • AES/EBU Input Sampling Rate: 32-48 kHz, auto-detecting
    • SDI Input Termination: 75 Ohms unbalanced
    • Aural Sound Outputs: Wohler Speaker System;Headphone, Mutes Speakers
    • Acoustic Distortion: 8% or less worst case frequencies above 180 Hz including cabinet resonance, typically < 2%
    • Electrical Distortion: <0.15% at any level below limit threshold
    • Frequency Response (1/6 octave): 80 Hz - 20 kHz (+ or -5 dB); (-10 dB @ 50 Hz, 22 kHz)
    • Peak Acoustic Output at 2 feet: 98 dB SPL
    • Hum and Noise: Better than -68 dB below full output
    • Power Output: RMS each side (2 ohms) - 5W, 7W peak, RMS center WOOFER (4 Ohms) - 11W, 16W peak
    • Level Meters: 8 x 26 Segments (Vertical)
    • Level Meter Threshold: 0, +4, +6, +8 dBv: switch selectable
    • Level Meter Scale: 0 to -60 dB
    • Level Meter Dynamics: Simultaneous VU & PPM
    • Level Meter Resolution: 1 dB
  • Video:
    • # of Video Displays: 0
    • Display Characteristics: LCD
    • Display Modes: Data Only
    • Rack Height: 1RU
    • Weight: 13.0 lbs (5.9 kg)
    • Shipping Weight: 18.0 lbs (8.2 kg)
    • Dimensions: 1.75x19x13.5" (45x483x343mm)
    • Power Consumption: 72W Max
    • Supplied Accessories: Power Cord
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