72 coupe back – Kustom 36 coupe User Manual

Page 20

’72 Coupe Back

1) Footswitch Assignment—This button selects which of the amp’s ef-

fects are controlled by the “Effects” button on the footswitch. If the switch

is IN, the footswitch will control the Reverb and the Tremolo will only be

controlled by the Pull Active Switch on the Speed control. If the Footswitch

Assignment button is OUT, then the Reverb will be active always, and the

footswitch will remotely control the Tremolo/Vibrato, overriding the setting

of the Pull Active Switch on the Speed control.
2) Footswitch—The Footswitch jack on the Coupe is a stereo jack that

connects the Coupe footswitch to the ampliﬁer. It uses a special circuit to

decode the 3 switches through a simple stereo cable. In an emergency, a

mono instrument cable can be used to allow footswitching of the channels

only. In this setup, the LEDs will not be visible, but at least the footswitch

will select Rhythm or Lead channels.
3) Ground Lift—The Ground Lift switch disconnects pin 1 of the XLR Di-

rect Out jack to eliminate a “ground loop” hum. A ground loop can exist

when the Coupe and the mixer it is plugged into are connected to grounded

outlets that are in physically different locations and/or on different circuits,

and should only be used if there is an audible hum. Pressing the ground lift

does not disconnect the ground connection from the Coupe’s chassis.
4) Direct Out—The XLR Direct Out jack is designed to connect the Coupe

ampliﬁer to a recording or live mixer. The output is speaker-emulated, and

mimics the sound of the KEI-Kustom Eminence Integrated Turbo-12 loud-

speaker. This output is very useful for direct recording, and especially helpful

for live applications since it eliminates a live microphone on stage and the

resulting feedback potential. The Coupe ampliﬁer should never be operated

without a speaker plugged into a speaker jack.
5) Direct Volume—Sets the level of the speaker-emulated direct out. This

control should be set as high as possible for the best signal-to-noise ratio.
6) Boost Volume—The Boost Volume knob controls the amount of foot-

switchable boost, and is particularly useful for solos. It will provide up to 10dB

of “Master Volume” boost, and boosts both channels. The tone is optimized

to increase the volume without sacriﬁcing too much headroom in the power

amp, so the resulting solo cuts through. The boost is active if the footswitch

is unplugged.
7) Effects Return—This 1⁄4” jack breaks the ﬂow of ampliﬁer signal to allow

an external effects device to “return” to the amp. The Return jack can also be

used for a power amp input, when using an external preamp. This all-tube ef-

fects loop is known as a “series” loop, since it breaks the path of the ampliﬁer

and “inserts” the effect in series.
8) Effects Send—This 1⁄4” jack delivers a tube-driven preamp signal to ex-

ternal effects devices. It can be used to send the signal to another ampliﬁer

to run multiple amps. Connecting a 1⁄4” plug does NOT break the ﬂow of the

ampliﬁer signal. To connect two Coupe ampliﬁers in stereo, a stereo effects

device can be driven from one Coupe amp’s Send, and the device’s two stereo

outputs can be returned to both Coupe amp Returns.

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