5
BEFORE YOU ROCK
Back to some serious stuff rock boy or rock girl. Before operating
your
JCA100H
please
make
sure
of
the
following:
WARNING
: If a speaker or suitable “dummy load” is not
plugged
into
the
speaker
jack,
output
transformer
failure
will
occur.
OUCH!
This
is
not
good
and
NOT
covered
under warranty.
•
First, plug the JCA100H head into a speaker cabinet.
•
Plug the power cable into the back panel and plug the cable
into
a
power
receptacle.
Turn
on
the
power
switch
on
the
amplifier
and
wait
about
30
seconds
for
the
tubes
to
warm
up.
•
Turn on the standby switch.
•
Turn
up
your
volume
switch
on
your
guitar
and
impress
your
friends
with
your
amazing
new
tone.
“He was turned to steel, in the great magnetic field.” Black Sabbath
6
GENERAL OPERATION
The JCA100H is a 2‐channel amplifier that does a few things
really well…it sounds good, it is easy to use, and it is versatile
because
it
is
has
great
tone.
Here’s
a
general
overview
and
some
suggestions
for
easy
operation.
•
PREAMP: Adjust the amount of gain (distortion) that the
amplifier
produces.
The
higher
the
preamp
setting
the
more
overdriven
the
sound
will
be.
•
BASS, MIDDLE and TREBLE: allow you to control the tone.
•
VOLUME: will let you adjust how loud the amplifier will
sound.
•
PRESENCE:
adds
an
overall
brightness,
which
can
be
handy
when
trying
to
cut
through
in
a
‘dead’
room.
The
JCA100H
offers
a
far
wider
range
of
gain
than
most
amplifiers
in
its
class.
Its
tonal
character
stretches
from
glassy
clean, to gritty edge, to modern high‐gain. Please experiment
with your amp until you find the tone that suites your musical
styles and tastes.
“It’s close to midnight and something evil’s lurking in the dark”
MJ – RIP from ‘333’
