Muting
The last two(2) terminals on the barrier strip are for muting. Channels 2 and 3 are muted when the two
mute contacts are shorted together. The muting is done by a FET switch so there is no ramping. An optional
VOX muting module (TX3010) is also available with has ramping.
Phantom Power
The IC30 does not have phantom power on the XLR’s.
Tape Output
A mono RCA output connector provides a line level output with a maximum of 350mV into 10k Ohms.
Signal from all three input channels are fed to the tape output. Level adjustments made to the three input
channels will affect the level going to the tape output.
Microphone/Line Inputs
Three universal microphone/line inputs are provided. Microphone inputs are via the 3 pin XLR connectors
while line inputs are via the RCA style connectors (one of each is provided per channel). All three inputs
can be used for microphone and auxiliary input sources. It is also possible to connect both a microphone
and line/aux source to the one channel simultaneously however their relative levels to one another will be
fixed, as there is only one gain control per channel.
The XLR connectors are wired: Pin 1: Earth. Pin 2: Active (high, +), Pin 3: Active (low, -). Microphone
input sensitivity is 1.5mV at 200 ohms.
The RCA connectors have an input sensitivity of 80mV at 47K ohms.
Microphone Inputs
All three(3) inputs are dual mic/line with microphone inputs being via a 3 pin XLR connector per channel.
The mic input sensitivity is 1.5mV @ 200 ohms. Pin connections are: pin 1-earth; pin 2-signal (hot +); pin
3-signal (cold -). Phantom power is not available. Reading from left to right across the rear panel, the inputs
are 3, 2, & 1.
Line Inputs
All three(3) inputs are dual mic/line with line/auxiliary inputs being via mono RCA connectors per channel.
Line input sensitivity is 75mV @ 47K ohms. Reading from left to right across the rear panel, the inputs are
3, 2, & 1.
Optional Accessories
Tone Generators
Four separate tones are available as an optional plug in card (ATC5488). The ATC5488 is a small circuit
board which simply plugs into a socket inside the amplifier. Activation is via contact closures which may
be wired to the rear panel of the IC30 or to external switches or a timer. Full installation instructions are
provided with the tone generator.
Tones available on the ATC5488 tone generator board are:
Evacuation Tone (to Australian Standard AS2220.1.2)
Alert Tone (to Australian Standard AS2220.1.2)
Bell TonePre Announce Chime
VOX Muting Module
An optional VOX muting module (TX3010) is available. When installed inside the amplifier, signal on
channel 1 of the amplifier will automatcially mute channels 2 and 3. When there is no signal on channel 1,
channels 2 and 3 will operate normally. Full installation instructions are provided with the TX3010.
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