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.
| 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 Ohms |
| Includes | PS 24-2 24 VDC 2 A Power Supply One 2-pin, one 3-pin Phoenix connector |
| Optional | 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) |
Usually arrives in 5-9 business days.
Usually arrives in 5-9 business days.
Usually arrives in 5-9 business days.
