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Forum system
The Forum system is comprised of a microphone / transmitter, either the
Sapphire (IRT-55), and/or Handheld (IRH-35) for voice transmission to a
ceiling sensor (ICS-55) that sends the signal to the receiver / amplifier (IMA-
320). The receiver/amplifier processes the signal and produces an analog
signal of your voice for output to the sound field speaker system.
front of IMA-320 receiver/amplifier
1
Power on/off
2
CH A Microphone Volume Control
3
CH B Microphone Volume Control
4
DVD Volume Control
5
Comp/Aux Volume Control
back of IMA-320 receiver/amplifier
1
Speaker Output - Two Channel Four
pin Phoenix connector
2
Three band digital equalizer
LO, MID, HI
3
Computer/Aux Input 3.5mm
1
2
3
Forum
CH A
CH B
Forum 232
DVD
6
CH A
CH B
7
8
9
10
1
SPEAKER OUTPUT
LOW
4ohm load = 25watts/amp
L
R
+ _
+ _
4
5
6
12 dB
±
7
4
5
6
ASSISTIVE
DVD
COMP/AUX
LISTENING
INPUT
LESSON
ASSISTIVE
COMP/AUX
LISTENING
CAPTURE
Comp/Aux Input (3.5mm)
INPUT
OUTPUT
OUTPUT
ALS Volume Control
ALS Output (3.5mm)
REC Volume Control
REC Output (3.5mm)
2
3
MID
HI
COMP/AUX
DVD gain
12 dB
±
DVD dual Mono Inputs (RCA)
Two Sensor Inputs (RCA)
Power Input: 19 VDC 3.4A
8
9
7
10
LESSON
CAPTURE
OUTPUT
OUTPUT
4
5 6 7
INPUTS
POWER
19V DC
3.4A MAX
GAIN
DVD
SENSOR
3
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