
- Microphone pre-amplifier
- Frequency response: 280 – 15kHz ± 3dB
- Microphone output to line – audio level (-50dBm electret input): -9dBm
- Microphone output to line – distortion: <0.1%
- Microphone output to line – signal to noise: >65dB
- Headphone pre-amplifier
- Frequency response - line to headphone: 150 – 20kHz ± 3dB
- Headphone input from line – audio level (-9dBm electret input): 3.5dBm
- Headphone input from line – distortion: <0.5%
- Headphone input from line – signal to noise: >50dB
- Earphone to mic – crosstalk: >80dB
- Sidetone – adjustment range (-80db mic input): >45dB
- Intercom line connectors(2) 3-pin XLR–M–F Ch. 1 2-Wire
- Intercom channel
- Pin 1: common
- Pin 2: PL power (+28VDC)
- Pin 3: line (audio)
- Headset: 4-pin XLR-M
- Headset connector
- Pin 1: mic — (mic common)
- Pin 2: mic+
- Pin 3: spkr-
- Pin 4: spkr+ (and 0.5*VCC DC, supply between Pin 4 and Pin 1)
- Input voltage range12-30V DC
- Input current (idle)<=12mA
- Input current (max)<=28mA
- Call voltage16.5V DC, 3.3V minimum voltage needed
- Dimensions (HxWxD)3.4" x 4.5" x 1.7"
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