QM-AE4

QM-AE4

QuickMedia® Quad Audio Extractor
Provides the equivalent of (4) QM-AE1 Audio Extractors in a single rack space. Extracts the stereo program and (2) speech/microphone audio signals from four separate QuickMedia signals. Can be inserted inline, or installed as a QM endpoint.

Crestron® 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. Whether installing a single boardroom or a campus-wide network of AV systems, MediaManager delivers power and value far beyond conventional products and designs.

The QM-AE4 is a single-space rack mount unit containing the equivalent of four QM-AE1 QuickMedia Audio Extractors. Its four independent extractors provide the ability to extract the stereo program and microphone audio signals from four separate QuickMedia feeds to drive a power amplifier or other audio device. Each QM Audio Extractor may be inserted anywhere along the QM signal path without affecting the audio, video, and computer signals passing through it. For ultimate flexibility, any of the QM-AE4's extractors may operate as a QM endpoint, effectively functioning as a QM audio receiver.[1]

QuickMedia® Transport
The revolutionary QuickMedia transport routes all audio, video, and RGB computer signals over a single inexpensive CAT5e type cable[1]. Stereo audio and microphone signals are transmitted digitally over QuickMedia with high-performance 24-bit resolution.

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 any of the QM-AE4's four audio extractors, the two incoming microphone signals are each processed separately by a 4-band speech-optimized graphic equalizer. Versatile 4x4 matrix mixing allows the mic signals and stereo program signal to be precisely adjusted and routed to any of four audio outputs. These outputs are configured as one stereo program channel and two discrete mono speech channels, perfect for feeding a Crestron QM-Series 3-channel amplifier[2] along with other recording and assistive listening equipment. All outputs are balanced line-level for proper integration with professional and semi-pro gear.

Professional DSP
The QM-AE4 lets you control and optimize your system's audio performance without the need for additional outboard processors. Each output channel includes programmable volume, bass, treble, and mute, plus ten-band graphic equalization and 2-band parametric equalization. In addition, each speech output includes up to 40 ms of delay adjustment for proper ceiling speaker alignment. All audio processing and mixing is performed in the digital domain, adjustable at setup using Crestron QM Tools software (part of Crestron Toolbox™).

MediaManager System Integration
The QM-AE4 affords seamless audio signal routing and control under the command of a MediaManager control system. Many parameters are controllable in real-time from a keypad or touchpanel, and numerous presets can be saved for instant recall. A complete MediaManager system is easy to design, program and adjust from start to finish using Crestron SystemBuilder software.

Key Features: 
  • Provides four independent QM audio extractors
  • Extracts QuickMedia audio signals
  • Inserts transparently in the QM signal path
  • Each extractor functions as a QM midpoint or endpoint device[1]
  • Provides stereo program and 2 discrete speech outputs per extractor
  • Includes built-in digital mixing, signal routing, equalization, and delay processing
  • Features professional balanced line-level outputs
  • An ideal QM signal interface for any QM-Series 3-channel amplifier[2]
  • Single-space rack-mountable
Description notes: 
  1. For QuickMedia wiring use CresCAT-QMCresCAT-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, however the QM-AE4 does not count as a midpoint device in this sense.
  2. Item sold separately.

 

Audio
  Features (x4) 4x4 mic/program matrix, 2-channels mic EQ at input, stereo volume/tone control and EQ on PROGRAM output, mono volume/tone control and EQ/delay on each MIC output
  Mixer Volume Range -80.0 to 0.0 dB per input
  Mixer Presets 1 thru 5
  Input Compensation ±10.0 dB per input
  Input Compensation Presets 1 thru 256
  Mic Input EQ Mode 4-band graphic per mic input
  Mic Input EQ Center Frequencies 160, 500, 1.2k, 3k Hz
  Mic Input EQ Gain ±12.0 dB per band
  Mic Input EQ Presets 1 thru 10
  Output Volume Range -80 to +20 dB, adjustable from 0% to 100%, plus mute, per output
  Bass Control ±15.0 dB @ 150Hz shelf per output
  Treble Control ±15.0 dB @ 4kHz shelf per output
  Output EQ Mode 10-band graphic + 2-band parametric per output
  Output GEQ Center Frequencies 31, 63, 125, 250, 500, 1k, 2k, 4k, 8k, 16k Hz
  Output GEQ Gain ±12.0 dB per band
  Output GEQ Presets 1 thru 10
  Output PEQ Types Low Pass, High Pass, Peaking Eq, Notch, Treble Shelf, Bass Shelf
  Output PEQ Center Frequency 25 to 20,000 Hz per band
  Output PEQ Gain ±12.0 dB per band
  Output PEQ Bandwidth 0.1 to 3.0 octaves per band
  Output PEQ Presets 1 thru 5
  Speech Output Delay 0 to 40 ms per MIC output
  D-A Conversion 24-bit, 48 kHz 
  Frequency Response 20Hz to 20kHz ±0.25 dB
  S/N Ratio 90dB 20Hz to 20kHz A-weighted 
  THD+N 0.015% 20Hz to 20kHz
Video
  Provides unbuffered, unprocessed pass-thru of video/RGB portion of QM signal; does not affect delay skew, bandwidth, or gain
Communications
  QuickMedia QM midpoint or endpoint device[1], QM auto-compensation with self-peaking
  Cresnet Cresnet slave device
Connectors
  IN 1 – 4 (4) QuickMedia input ports with Cresnet pass-thru, each comprised of (1) 8-wire RJ45 female (QM) and (1) 4-pin 3.5mm detachable terminal block (Cresnet);
Connect to QM output ports of other QuickMedia devices via CresCAT-QM cable[1];
NOTE: Each Cresnet IN port is paralleled with the adjacent Cresnet OUT port only; the Cresnet IN/OUT ports are for pass-thru only and do not terminate internally.
  OUT 1 – 4 (4) QuickMedia output ports with Cresnet pass-thru, each comprised of (1) 8-wire RJ45 female (QM) and (1) 4-pin 3.5mm detachable terminal block (Cresnet);
Connect to QM input ports of other QuickMedia devices via CresCAT-QM cable[1];
NOTE: Each Cresnet OUT port is paralleled with the adjacent Cresnet IN port only; the Cresnet IN/OUT ports are for pass-thru only and do not terminate internally.
  AUDIO OUT 1 – 4, PROG L – R (4) 5-pin 3.5mm detachable terminal blocks;
Stereo “program” balanced line-level audio outputs;
Output Impedance: 200 ohms balanced, 100 ohms unbalanced;
Maximum Output Level: 4 Vrms balanced, 2 Vrms unbalanced
  AUDIO OUT 1 – 4, MIC 1 – 2 (1) 5-pin 3.5mm detachable terminal blocks;
Two-channel “speech” balanced line-level audio outputs;
Output Impedance: 200 ohms balanced, 100 ohms unbalanced;
Maximum Output Level: 4 Vrms balanced, 2 Vrms unbalanced
  NET (2) 4-pin 3.5mm detachable terminal blocks
Cresnet slave ports, paralleled
Connect to Cresnet control network via CRESNET cable
  G (1) 6-32 screw, chassis ground lug
Buttons & Indicators
  PWR (1) green LED, indicates 24 Volts DC power supplied from Cresnet control network
  NET (1) amber 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 20 Watts (0.83 Amp @ 24 Volts DC)
Environmental
  Temperature 41° to 104°F (5° to 40°C)
  Humidity 10% to 90% RH (non-condensing)
  Heat Dissipation 69 BTU/Hr
Enclosure
  Chassis Metal, black matte powder coat finish
  Faceplate Extruded aluminum, black matte powder coat finish with polycarbonate label overlay
  Mounting Freestanding or 1U 19-inch rack-mountable (adhesive feet and rack ears included)
Dimensions
  Height 1.80 in (46 mm);
1.70 in (44 mm) without feet
  Width 17.07 in (434 mm)
  Depth 8.55 in (217 mm)
Weight
  3.8 lb (1.7 kg)

 

Technical notes: 
  1. For QuickMedia wiring use CresCAT-QMCresCAT-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, however the QM-AE4 does not count as a midpoint device in this sense.
  2. Item sold separately.
Publications: 

 

Spec Sheet

Spec Sheet (PDF)

Manual

Manual (PDF - 4.41 M) 
Doc. No. 6927B 
Rev. Date: 5/17/2010

 

CAD Drawings and Revit® Files: 

 

Zoomable Drawing

Zoomable Drawing

Cad Files

Cad Files (ZIP - 1.7 M)
Rev. Date: 4/29/2010

 

Available Models: 

 

Model Description

QM-AE4

QuickMedia® Quad Audio Extractor

 

Available Accessories: