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INSERTS
Each preamplifier channel includes a switchable insert point to connect external processing
equipment such as compressors or noise gates. The insert includes a send and a return: with no jack
in the INSERT socket, the channel signal path is uninterrupted. The insert send and return are both
unbalanced. Use a TRS jack wired with the tip (send) and ring (return) of the jack wired to two separate
cables; such cables (often referred to as 'Y-cables") are available from professional audio suppliers.
The insert point is post the AIR circuitry (external equipment will receive a signal modified by AIR)
and post the front panel GAIN controls [4]. When using an insert point, try to adjust the input and
output levels of the external processor so the return signal is about the same level as the send. If
the external processor has too much gain, you run the risk of overload within the OctoPre, so use the
channel meters [7] to check the return signal level.
INSERT socket
With no jack inserted
into the INSERT socket
the channel path is
uninterrupted.
Use the front panel INSERT/AIR buttons [6] to enable the insert point. (First select INSERT using the
main switch [8].) The channel LED will illuminate green to confirm selection.
RING (return)
TIP (send)
SLEEVE
INSERT socket
RING (return)
TIP (send)
SLEEVE
With a TRS jack inserted
into the INSERT socket:
Tip is insert send
Ring is insert return
11
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