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User Manual PS 6379 / May 2011 © ASL Intercom BV
6.0 GENERAL DESCRIPTION OF THE PS 6379
The PS 6379 is designed to be a six channel
loudspeaker master unit in a full duplex ASL
Intercom system. It incorporates a program audio
input and two auxiliary audio inputs, a headset
connector, a loudspeaker and a gooseneck
microphone, a stage announce output and a direct
mic output. The unit may operate in various operation
modes (see section 12.0).
The built-in power supply supplies line power to a
maximum 60 Beltpacks or 30 Speaker Stations.
The PS 6379 RM model has, instead of a gooseneck
mic, a small built-in electret microphone.
Each channel has a Volume (listen level) control, a
Talk and Call button with LED indicators and a two-
stage side tone trimmer. A master volume controls
the total speaker/headset volume.
The unit is equipped with a limiter for the gooseneck
microphone, allowing the user to speak close into the
microphone without giving rise to overload and
distortion.
Loudspeaker attenuation is automatic when the
gooseneck microphone is active.
When a headset is connected, both gooseneck
microphone and speaker are switched off
automatically. The speaker can be then switch on
again with the Speaker on/off button.
As an option, a XLR-5 headset connector can be
fitted for binaural use of the headset. By setting
internally mounted jumpers, each of the 6 channels
can be assigned to either the left or the right headset
can, or to both headset cans.
An electronically balanced input allows volume
controlled monitoring of an external program (PGM)
audio signal. This signal does not appear on the
intercom lines.
The unique CALL system provides both a flashing
red LED and a very distinctive and characteristic
sound signal (buzzer). The volume of the buzzer can
be adjusted or muted with the “All buzzers on/off”
button.
7.0 TECHNICAL SPECIFICATIONS
Intercom System
dynamic range: 80 dB
call send signal: +2.8 mA
call signal threshold (receive): +2.4 V DC
supply voltage: +30 V DC (12 - 32 V DC)
power interrupt time (mic mute): 0.1 sec
line Impedance: 350 Ω (1kHz), 2.2 kΩ (DC)
audio level: nom. -18 dBu, max. +4 dBu
Switch Mode Power Supply module
mains voltage : 100 – 240 V AC, 50/60 Hz
output voltage: +30 V DC (+/- 5%)
max. output power: 150 watts
circuit breaker delay time: 0.2 sec.
automatic reset time: 3.0 sec.
Mic. Pre-amps
gooseneck mic: noise cancelling electret
headset mic. impedance: 200 Ω
gain: 40 - 60 dB (adjustable internally)
presence filter: +6 dB at 5 kHz
frequency response: 200 Hz - 13 kHz (-3 dB)
power to electret mic: +9 V DC
limiter range (gooseneck mic): 30 dB
Headphones Driver Amps
max. output level:
monaural: 14 Vrms @ 200 Ω
binaural: 2x 10.6 Vrms @ 400 Ω
max. output power:
monaural: 1 Wrms @ 200 Ω
binaural: 2x 0.28 Wrms @ 400 Ω
Side Tone
Rejection: 0 - 30dB adjustable
Buzzer
max. SPL: 85 dBA
Speaker Driver Amp
speaker impedance: 25 Ω
max. output power: 2.9 Wrms
Program & (IFB) AUX Inputs
input impedance: 18 kΩ
nominal input level: 0 dBU
max. input level: +12 dBu
Direct Mic Output
output impedance: 50 Ω (balanced)
nominal Output Level: + 6 dBu
max. Output Level: +24 dBu
Dimensions & Weight PS 6379 / PS 4379
width: 420 mm
height: 88 mm
depth: 180 mm
weight PS 6379: 4450 grams
weight PS 4379: 4200 grams
0 dBu is defined as 775 mV into open circuit.
ASL reserves the right to alter specifications without
prior notice.
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