SMG-40 Sound Masking Generator and Amp

Type: Audio
Part Number: 5103-001
Size: 5.500 wide x 6.460 high x 3.860 deep
Weight: 1.000
Distribution:
Released: March 2017


Where to Buy

SMG-40 Product Manual
SMG-40 Data Sheet

  • SMG-40 Front View
  • SMG-40 Back View

More about Audio

Contemporary Research has designed niche audio products that offer controlled audio enhancement and new innovations in sound masking.

About SMG-40 Sound Masking Generator and Amp

The Contemporary Research SMG-40 Sound Masking Generator has the power to drive over 30 25V plenum and ceiling speakers, 70V transformer, 4/8 ohm speakers, and over 100 Cambridge Qt® Emitters.

Related Equipment & Software

Accessories

Contemporary Research offers a variety of product accessories to necessitate or enhance the functionality of AV products.

Full Description & Specifications

The Contemporary Research SMG-40 Sound Masking Generator has the power to drive over 30 25V plenum and ceiling speakers, 70V transformer, 4/8 ohm speakers, and over 100 Cambridge Qt® Emitters. Many masking generators use standard pink noise while the SMG-40 filtered noise is optimized for masking speech in real-world applications.

Housed in a compact metal enclosure, the amplifier can output 40W audio over two RJ-45 ports and a 3-pin Phoenix terminal for 25V, or 4/8 Ohm speakers and 70v transformer. A stereo Music input and level control is available for BGM applications. A contact closure input can mute the amplifier when activated.

  • Employs pink noise optimized for speech privacy with bass, treble and level adjustment
  • Supports 3.5mm stereo Music input with independent level control
  • Drives speakers at 40 W RMS
  • Dual RJ-45 outputs for Cambridge Qt Emitters
  • Provides 3-pin captive-screw terminal for 25V and 4/8 Ohm speakers or 8 Ohm/70V transformer
  • Includes closure input to mute amplifier
  • Metal enclosure with flanges for surface mounting
  • Made in America


Distribution:

Physical:
  • Dimensions: 5.5” [140mm] W (6.46” [168mm] inc. flange) x 2.375” [60mm] H x 3.875” [98mm] D
  • Weight: 1 lbs [454g]
  • Enclosure: All aluminum with durable black powder coat paint, flanges for surface mounting

Audio:
  • Amplifier: 40W RMS Class D, highly energy-efficient, operates with very little heat
  • Masking Filter: Pink noise optimized for speech privacy

Front Panel:
  • Power: Green LED
  • Masking: Masking level, Bass level, Treble level control
  • Music: Level control

Back Panel:
  • Power: 2-pin Phoenix connector, 24 VDC, 2A max
  • Music: Stereo line-level 3.5 mm jack, unbalanced, 7.5K ohms impedance, summed to mono
  • Audio Mute: 2-pin Phoenix connector, closure mutes amplifier output
  • Audio Output: Two RJ-45 Cat5 cable output for Cambridge Qt Emitters
    • Three-pin Phoenix connector for Com (GND), 25V, and 4/8 Ohms

Includes:
  • 5406-001, PS24-2.5 Power Supply
  • Metal Enclosure with Surface Mounting Flanges
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PS24-2.5 Power Supply

24VDC 2.5A Power Supply