10
Quick Start Guide
6408 216th Street SW
|
Mountlake Terrace, WA 98043 USA
T
+1.425.778.7728
F
+1.425.778.7727
|
www.SymetrixAudio.com
MIC
Each RS-485 address (each brain
board) can have one MIC or XLR.
There is no Board ID to set on the
MIC, however some wiring and
jumpers must be properly placed.
The diagram below specifies the
necessary connections.
XLR
(input with gain)
Each RS-485 address (each
brain board) can have one MIC
or XLR. There is no Board ID to
set on the XLR, however some
wiring and jumpers must be
properly placed. The diagram
below specifies the necessary
connections to configure the
XLR jack for a microphone input
with 46 dB of gain. No phantom
power is supplied and phantom
power must not be present on
the ARC Audio lines or damage
to the XLR will occur. This
configuration is useful for a local
dynamic paging or intercom
mic. The input from the mic is
boosted to nearly line level for
long distance transmission over
ARC Audio.
J1: Modular ARC
Expansion Bus
Connects to the
brain board or
expansion board
with the next lowest
Board ID.
J4: ARC Audio
Connects to
J13 on the brain
board.
J2: Electret Mic Connect/
Enable
Electret capsule wires
to pin 1 (+) and pin 2 (-).
Jumpers 3/4 and 5/6 must
be placed in order to enable
the electret and supply
necessary gain (46 dB).
J3: XLR
Not used for electret mic.
J1: Modular ARC
Expansion Bus
Connects to the
brain board or
expansion board
with the next lowest
Board ID.
J4: ARC Audio
Connects to J13 on
the brain board.
J2: Electret Mic
Connect/Enable
No jumpers placed
when XLR is used.
J3: XLR
Audio lines from the
XLR jack connect here
to be amplified then
sent over ARC audio.
Hardware Setup
