565E
14
Sidechain/Key Input Connection
The 565E’s Sidechain KEY INPUT connector is a 1/4-inch TRS jack, and is both an input and an
output on the same connector. This jack is wired: Tip = return (input), Ring = send (output) and
Sleeve = ground. This connection can be used as a key/trigger input, or as a sidechain insert point
for external processing.
When using the KEY INPUT as a trigger input, the 565E requires an unbalanced line-level audio
signal for the key/trigger signal (not a DC voltage). Wire the audio cable coming from the line-level
output of your trigger signal source: Tip = hot (+), Ring = no connection, and Sleeve = ground; or
Tip and Ring = hot (+) and Sleeve = ground. If your cable has TS connectors, rather than TRS,
wire them: Tip = hot (+) and Sleeve = ground.
If you wish to use a mic-level trigger signal, such as the output of the kick-drum mic, the mic-level
signal must first be boosted up to line-level before it is connected to the KEY IN jack of the 565E.
This is accomplished by routing the output of the mic to the input of a mic preamp, such as the
Symetrix SX202. You can also use the mic preamp built into any mic input channel of a standard
mixing console. In this case, connect your microphone to the mic input channel, and turn up the
aux send control on just that channel. Then, route the aux send’s line-level output to the KEY INPUT
of the 565E. Typically, signals such as the output signal of a keyboard or a drum machine are
already at line-level, so these outputs could be connected directly to the KEY INPUT of the 565E.
Below is a hookup diagram for connecting a trigger signal to the 565E’s.
CHANN
SIDECHAIN
INPUT
KEY
CHANNEL 1 OUTPUT
BALANCED/
UNBALANCED
BALANCED
OUTPUTS
BALANCED
TYPICAL CONNECTIONS
3
1
SIDECHAIN
3
1
GROUND=PIN 1
HIGH(+)=PIN 2
LOW(-)=PIN 3
22
INPUTS
BALANCED
CHANNEL 2 INPUT
1/4"BALANCED
SIDECHAIN OUT
KEY INPUT
GROUND
BALANCED
SLEEVE=GROUND
RING=LOW(-)
TIP=HIGH(+)
ALANCED
ANCED/
UNBALANCED
BALANCED/
DRUM MACHINE
LINE OUTPUT
MIC
LIVE
LINE OUTPUT
MUSIC KEYBOARD
INPUT
PRE-AMP
IGNORE
KEY IN
GROUND
KEY
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