- Description
Details
Contemporary Research SMG-40 Sound Masking Generator
The 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.
- Features
Features
- Employs pink noise optimized for speech privacy with bass, treble and level adjustment
- Supports 3.5 mm stereo Music input with independent level control
- Drives speakers at 40W 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
- Specification
Amplifier 40W RMS Class D, highly energy-efficient, operates with very little heat Masking Filter Pink noise optimized for speech privacy Connectors 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 OhmsIncludes PS 24-2 24 VDC 2 A Power Supply
One 2-pin, one 3-pin Phoenix connectorOptional 32W 8 Ohm to 70V transformer (by others) Dimensions (H x W x D) 2.38" (60 mm) x 5.5" (140 mm) x 3.88" (99 mm) Weight 1 lb (0.45 kg) - Documents
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