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Setting Up - Chapter 1
Q20 Reference Manual 13
Using Inserts
By using individual channel inserts, you can dedicate the Q20 to a specific channel
(or pair of channels) on the mixer. The Insert connections on the back of the mixer
provide a way of ÒinsertingÓ external processing equipment into the signal path.
The insert occurs after the input amplifier, and before the main fader; essentially it
is the same as connecting the source (instrument or microphone) into the Q20 before
the mixerÕs channel input. However, some mixing consoleÕs inserts come after the EQ
section, and may therefore be different from the original signal.
Usually, insert connections require a special, stereo-splitting Y-cord to be connected
(one stereo plug provides both send and return while two mono plugs connect
separately to an input and output). These are known as TRS connectors (tip-ring-
sleeve). The tip of the stereo plug typically carries the send or output of the insert
jack, while the ring carries back the return. The sleeve represents a common ground
for both signals. Check the manual of your mixer because some are wired differently
(for example, having two separate jacks for send and receive).
Mono. This involves connecting a 1/4" TRS (tip-ring-sleeve) to the Insert jack of a
single channel on a mixing console. The other end of the cable (which splits into
two, 1/4" mono connectors) are connected to the [L] INPUT and [L] OUTPUT,
respectively. If you do not hear any audio after making these connections, swap the
input and output cables at the Q20, as these may be wired backwards. If the cable is
color-coded, usually the red jack represents the send (which connects to the Q20Õs
INPUT) and black is the return (which connects to the OUTPUT).
Left Input
Left Output
Channel
Insert