Crest Audio CKd 604 Owner's Manual page 15

With two SPST momentary switches, one switch must be wired across the "On"
and "Com" pins, and the other switch must be wired across "Off" and "Com"
pins. When the first switch is depressed, it shorts the "On" and "Com" pins,
turning the amplifier on. Depressing the other switch will short the "Off" and
"Com" pins, turning the CKd off. See the diagram below:
Any number of CKd, Ci, CKi or CKS/V/X amplifiers can be daisy-chained
together for sequential turn-on. Wiring two amplifiers for STO is as simple as
connecting the "On," "Com" and "Off" pins of the "STO Out" connector on the
first amplifier to the corresponding pins on the "STO In" connector on the
second amplifier. Repeating this wiring scheme with subsequent amplifiers
allows entire systems of CKd's to be wired for STO.
CKd Series Owners Manual v1e
SPST Momentary
On
Switches
Off
On
To STO In
Com
of next amp
Off
CKd Owner's Manual
STO connections are
optically isolated so
connecting amplifiers
from different AC feeds
will not create grounding
(hum) issues.
Amp 1
Amp 2
Amp 3
Amp 4
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