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XLR-3 Unbalanced Configuration Pinouts
Pin 1: Common
Pin 2: +24 VDC input
Pin 3: Intercom audio high
XLR-6 Unbalanced Configuration Pinouts
Pin 1: Common
Pin 2: Local power (12 to 15 VDC, 65 to 150 mA)
Pin 3: Channel 1 +24 VDC input
Pin 4: Channel 1 Intercom audio high and DC call
Pin 5: Channel 2 +24 VDC input
Pin 6: Channel 2 Intercom audio high and DC call
PA Output
Output Level: 235 mVrms nominal
Connector Type: 1/8-inch Stereo Phone Jack
Tip: PA output high
Ring: Not used
Sleeve: Common
Speaker Output
Output Level: 0 dB nominal (1.0 Vrms)
Output Impedance: 1000 ohms nominal
Frequency Response: 200 Hz to 8 kHz +1/-3dB
Connector Type: RCA Phono Jack
Tip: Speaker output high
Sleeve: Common
Expansion Input /Output
Type: 2.0 mm stereo phone jack
Tip: Talk output
Ring: Listen input
Sleeve: Common
Headphone Amplifier
Voltage Gain: 30 ±3 dB
Maximum Output: 250 mW ±10% into 150 ohms, 65 mW±10% into 600 ohms
Frequency Response: 200 Hz to 8 kHz +1/-3db
Incoming Call Beep Tone: 2 kHz, at the headphones
Total Harmonic Distortion: Less than 0.2% at 200 mW
Sidetone: 18 ±2 dB, adjustable