System
Dynamic range: 80 dB (1 kHz, THD < 1%)
Call signal (send): 2.8 mA
Call signal threshold (receive): +2.4 V DC
Supply voltage: +30 V DC (12 to 32 V DC)
Power interrupt time (mic mute): 0.1 sec
Intercom Line
Impedance: 350 ohms (1 kHz), 2.2 kOhms (DC)
Audio level: nom. -18 dBu, max. +4 dBu
Switch Mode Power Supplies
Mains voltage range: 100 - 240 V AC 50/60Hz
Output voltage: +30 V DC (+/- 5%)
Max. output power:
PS 285: 45 W
PS 279/289: 75 W
PS 680: 2 x 45 W
PS 6379 Mk2: 145 W
Mic. Preamps
Gooseneck microphone: noise canceling electret
Headset mic. impedance: 200 ohms
Gain: 40 - 60 dB (adjustable internally)
Presence filter: +6 dB at 5 kHz
Frequency response: 200 Hz - 15 kHz (-3 dB)
Power to electret mic.: +9 V DC (PS 6379 Mk 2 = + 15V DC
Limiter range (gooseneck mic): 30 dB
Headphone Driver Amps
Max. output level
Normal: 14 Vrms (at 200 ohms)
Binaural: 2 x 10.6 Vrms (at 400 ohms)
Max. output power
Normal: 1 Wrms (at 200 ohms)
Binaural: 2 x 0.28 Wrms (at 400 ohms)
Speaker Driver Amps (PS 130/230/430/630//6379 Mk2)
Speaker impedance: 25 ohms
Max. output power: 2.9 Wrms
Side Tone
- Rejection: 0 - 30 dB adjustable
Buzzer
- Max. SPL: 100 dBA
Program Inputs (PS 630/4379/6379)
Input impedance: 47 kOhms (PS 6379 Mk2 = 2K2)
Nominal input level: -12 dBu to +6 dBu
Max. input level: +16 dBu
Aux Inputs (PS 279/289/6379 Mk2)
Input impedance: 11 kOhms (PS 6379 Mk2 = 2K2)
Gain: 0 dB (line level)
Nominal input level: -20 dBu to +10 dBu (line level)
Max. input level: +21 dBu (line level)
Aux input (PS 680)
Input impedance:
30 kOhms (line level)
4.6 kOhms (mic level)
Nominal input level:
-18 to +6 dBu (line level)
-38 to -14 dBu (mic level)
Max. input level:
+22 dBu (line level)
+2 dBu (mic level)
Phantom power: +30 V DC (mic level selected)
Direct Mic Outputs (PS 630/6379 Mk2)
Output impedance: 50 ohms (balanced)
Nominal output level: +6 dBu
Max. output level: +24 dBu
DC inputs (PS 279/289/6379 Mk2)
- Supply voltage: 12 - 28 V DC
0 dBu defined as 775 mVrms into open circuit.
ASL reserves the right to change specifications without prior notice.