User manual

Clear-Com Intercom Systems KB-211/KB-211GM Two-Channel Speaker Stations
© Clear-Com Intercom Systems 1999
25
Rev. A
Technical Specifications
Headset Microphone Pre-Amp
Input Type: Dynamic
Impedance: 1k ohm
Input Level: -55 dBV nominal; -10 dBV max.
Gain from headset
mic to intercom line: +41 dB
Panel Microphone Pre-Amp (KB-211GM only)
Input Type: Electret
Input Level: -45 dBV nominal
Gain from panel
mic to intercom line: +31 dB VOX not tripped/+41 dB VOX tripped
Pre-Amp Response Curve
Frequency Response: 250 Hz to 12 kHz, contoured for intelligibility
Limiter Range 20 dB
Headphone Amplifier
Load Impedance Range: 50 ohm to 2k ohm
Output Level: at least +20 dBV across 600 ohm
Distortion: < 0.5% THD at 1 kHz
Frequency Response: 200 Hz to 15 kHz, ±3 dB
Gain from intercom line: +37 dB
Power Output: 110 dB SPL
Speaker Amplifier
Speaker Type: 2.5 in. round, 16 ohm
Power Output: 2 W into 16 ohms
Frequency Response: 200 Hz to 15 kHz, ±3 dB
Signal-to-Noise: 75 dB
Gain from intercom line: +37 dB
Distortion: < 0.5% THD at 1 kHz
Speaker Level: 98 dB SPL at 3 ft.
Program Amplifier
(Transformerless, balanced differential input)
Input Level: -20 dBV
Input Impedance: > 100k ohm
Frequency Response: 150 Hz to 15 kHz, ± 3 dB