Telex BP-1002 Intercom System User Manual


 
18
DYNAMIC MICROPHONE AMPLIFIER:
Voltage Gain:
Mic to Channel; 45 ±3 dB, before limiting
Mic to Headphone; adjustable, 65 dB range into 150
ohm
Frequency Response:
200 Hz to 8 kHz +1/-3dB
Total Harmonic Distortion:
Less than 1% at Channel output at 1 kHz
ELECTRET MICROPHONE AMPLIFIER:
Voltage Gain:
Mic to Channel; 24 ±3 dB, before limiting
Mic to Headphone; adjustable, 45 dB ±10% into
150ohm
Frequency Response:
200 Hz to 8 kHz +1/-3dB
Total Harmonic Distortion:
Less than 1% at Channel output