Kustom 36 coupe Stereo Amplifier User Manual


 
22
’72 Coupe
Hardtop
Back
1) 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.
2) 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.
3) 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.
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) 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-
‘72 Cou peH ard top Co ntr olP anel s
speaker. This output is very useful for direct recording, and especially help-
ful for live applications since it eliminates a live microphone on stage and
the resulting feedback potential. The Coupe amplifier should never be oper-
ated without a speaker plugged into a speaker jack.
6) 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.
7) 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.
8) 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.


 




