36 coupe back – Kustom 36 coupe User Manual

Page 16

’36 Coupe Back

1) 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 three switches through a simple stereo cable. In an emer-

gency, 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.
2) Ground Lift—The Ground Lift switch disconnects pin 1 of the XLR

Direct 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 dif-

ferent circuits, and should only be used if there is an audible hum. Press-

ing the ground lift does not disconnect the ground connection from the

Coupe’s chassis.
3) 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

loudspeaker. This output is very useful for direct recording, and espe-

cially 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.

4) 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.
5) 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.
6) 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 effects loop is known as a “series” loop, since it breaks the

path of the ampliﬁer and “inserts” the effect in series.
7) Effects Send—This 1⁄4” jack delivers a tube-driven preamp signal

to external 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 ste-

reo, 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 amps’

Returns.

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