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QM-AE

QuickMedia Audio Extractor

Discontinued

This product has been discontinued. Please contact Crestron True Blue Support at 1-888-CRESTRON for a replacement solution or more information.

  • Extracts QuickMedia audio signals
  • Inserts transparently in the QM signal path
  • Discrete stereo program and mono speech outputs
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Crestron's MediaManager is a comprehensive family of affordable products fusing high-performance AV signal distribution, device control, and facility-wide system management. MediaManager simplifies the art of ProAV system design and installation with complete hardware, software, and low-cost wiring solutions.

QuickMedia® Transport

Crestron's ingenious QuickMedia transport routes all audio, video, and RGB computer signals over a single inexpensive CAT5e type cable*. Stereo audio and microphone signals are transmitted digitally over QuickMedia with high-performance 24-bit resolution.

QuickMedia Audio Extractor

The QM-AE provides a solution for extracting stereo program and microphone audio signals from the QuickMedia transport to feed a power amplifier or other audio device. It may be inserted anywhere along the QM signal path without effecting the audio, video, and computer signals passing through it.

High-Performance Audio

The QuickMedia transport carries four channels of 24-bit digital audio comprising a stereo program signal and two discrete microphone signals. Within the QM-AE, each of the two incoming microphone signals is processed by its own 4-band speech-optimized graphic equalizer. Versatile 4X3 mixing allows the mic signals and stereo program signal to be precisely adjusted and routed to any of three audio output channels. These three channels are ideally configured to supply discrete stereo program and mono speech signals to feed a QM-AMP3X80 3-channel amplifier (sold separately). All outputs are professional balanced line-level.

Professional Digital Audio Processing

Each output channel includes software-adjustable volume, bass, treble, and mute, plus ten-band graphic equalization and 2-band parametric equalization. In addition, the speech output includes up to 40mS of delay adjustment for proper ceiling speaker alignment. All audio processing and mixing is performed in the digital domain, adjustable at setup using Crestron's QM Tools software (part of Crestron Toolbox).

With such extensive audio features, the QM-AE effectively eliminates the need for expensive outboard processors to tailor the system's audio performance to the acoustical environment. Many parameters are controllable in real-time from a keypad or touchpanel, and numerous presets can be saved for instant recall to accommodate changing room conditions or varying source material.

 
Key Features
  • Extracts QuickMedia audio signals
  • Inserts transparently in the QM signal path
  • Discrete stereo program and mono speech outputs
  • Built-in mixing, equalization, and delay processing
  • Professional balanced line-level outputs
  • Perfect QM interface for QM-AMP3X80 3-channel amplifiers
  • 1/2-space rack-mountable
 
Audio
  Features 4x3 mic/program matrix matrix, 2-channels mic EQ, stereo volume/tone control and EQ on PROGRAM output, mono volume/tone control and EQ/delay on SPEECH output, QM auto-compensation with self-peaking
  D-A Conversion 24-bit, 48 kHz
  Output Volume Range -80dB to +20dB, 0.1dB steps plus mute
  Mixer Volume Range -80dB to 0dB, 0.1dB steps
  Input Compensation ±10dB, 0.1dB steps
  Mic EQ Filter Gain ±12dB, 0.1dB steps
  Mic EQ Filter Center Frequencies 160, 500, 1.2k, 3k Hz
  Bass Gain Range ±12dB @ 100Hz, 0.5dB steps
  Treble Gain Range ±12dB @ 10kHz, 0.5dB steps
  Output Equalization 10-band graphic + 2-band parametric
  PEQ Filter Gain ±12dB, 0.1dB steps
  PEQ Filter Bandwidth 0.1 to 3.0 octaves, 0.1 octave steps
  PEQ Filter Center Frequency 25Hz to 20kHz, 0.5Hz steps
  PEQ Filter Types Low Pass, High Pass, Peaking Eq, Notch, Treble Shelf, Bass Shelf
  GEQ Filter Gain ±12dB, 0.1dB steps
  GEQ Filter Center Frequencies 31, 63, 125, 250, 500, 1k, 2k, 4k, 8k, 16k Hz
  Speech Output Delay 0 to 40 mS, 1mS steps
  Frequency Response 20Hz to 20kHz ±0.5dB
  S/N Ratio 90dB 20Hz to 20kHz A-weighted 
  THD+N 0.05% 20Hz to 20kHz
Video
  Provides unbuffered, unprocessed pass-thru of video/RGB portion of QM signal; does not effect delay skew, bandwidth, or gain
Connectors
  LINE OUT SPCH (1) 3-pin 3.5mm detachable terminal block;
Speech-channel balanced line-level audio output;
Output Impedance: 200 ohms balanced, 100 ohms unbalanced;
Maximum Output Level: 4 Vrms balanced, 2 Vrms unbalanced
  LINE OUT L - R (2) 5-pin 3.5mm detachable terminal blocks;
Stereo program-channel balanced line-level audio output;
Output Impedance: 200 ohms balanced, 100 ohms unbalanced;
Maximum Output Level: 4 Vrms balanced, 2 Vrms unbalanced
  QM IN (1) 8-wire RJ45 female, QuickMedia input port;
Connects to QM output port of any QuickMedia device via CresCAT-QM or CresCAT-IM cable*
  QM OUT (1) 8-wire RJ45 female, QuickMedia output port;
Connects to QM input port of any QuickMedia device via CresCAT-QM or CresCAT-IM cable*
  NET (2) 4-pin 3.5mm detachable terminal blocks;
Cresnet slave ports, paralleled;
Connect to Cresnet control network via CresCAT-QM or Cresnet cable
  G (1) 6-32 screw, chassis ground lug
Buttons & LED Indicators
  PWR (1) green LED, indicates 24 Volts DC power supplied from Cresnet control network
  NET (1) yellow LED, indicates communication with Cresnet system
  SETUP (rear) (1) miniature pushbutton and red LED, used for touch-settable ID (TSID)
Power Requirements
  Cresnet Power Usage 5 Watts (0.21 Amp @ 24 Volts DC)
Environmental
  Temperature 41° to 104°F (5° to 40°C)
  Humidity 10% to 90% RH (non-condensing)
Enclosure
  Chassis Steel, black matte powder coat finish
  Faceplate Extruded aluminum, black matte powder coat finish with polycarbonate label overlay
  Mounting Freestanding or 0.5U 19-inch rack-mountable (adhesive feet included, ST-RMK rack kit sold separately)
Dimensions
  Height 1.80 in (4.57 cm);
1.70 in (4.32 cm) without feet
  Width 7.07 in (17.96 cm)
  Depth 6.36 in (16.15 cm)
Weight
  2.0 lb (0.91 kg)

* For QuickMedia wiring use CresCAT-QM, CresCAT-IM, or quality CAT5e/CAT6 cable with a delay skew of ≤15nS per 100m; the maximum aggregate cable length and delay skew between any QM transmitter (origination point) and QM receiver (endpoint) is 450 ft (137 m) and 22 nS; a maximum of two QM midpoint devices may be inserted in a given QM signal path; exceptions apply, refer to each respective product manual for full detail.

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