
15
Combo and Head Amp Flat and
Clean Settings
Fender Combo Amps with 3-knob
tone stacks
Most
Fender
combos
with
3
‐
knob
tone
stacks
are
flat
when
the
MID
is
at
maximum
(full
clockwise),
the
TREBLE
is
set
to
minimum
(full
counter
‐
clockwise)
and
the
BASS
is
set
to
about
8
o’clock.
Older Marshall Heads
Pre
1965
Marshall
heads
can
be
set
“flat”
when
the
BASS
is
at
4.5
(9
o’clock),
the
MID
is
at
maximum
(full
clockwise
and
the
TREBLE
is
at
3.5
(8
o’clock).
Later
Marshall
heads
have
slightly
different
“flat”
settings.
Vox 2-Knob Tone Control Combos
Vox
AC30
can
be
made
close
to
flat
by
setting
the
BASS
to
0.5
(8
0’clock)
and
the
TREBLE
to
1.0
(8:30
o’clock).
Technical Support
1.
What
are
some
quick
tests
to
troubleshoot
my
unit?
16
Sometimes
a
few
quick
tests
at
home
can
be
the
difference
between
thinking
your
unit
is
broken
and
getting
it
working
properly.
Here
is
a
list
of
quick
trouble
‐
shooting
steps
to
test
your
gear
and
unit.
As
basic
as
these
sound
please
run
all
the
tests.
1.
Check
simple
signal
chain:
Plug
your
cable
from
your
guitar
into
your
amp.
If
you
have
a
direct
connect
tone
go
to
step
2.
If
not
you
have
a
bad
cable,
guitar
or
amp.
2.
Check
2nd
cable:
Take
your
#2
cable
and
switch
it
with
the
first
cable.
If
you
have
sound,
we
now
know
both
cables,
your
guitar
and
amp,
work.
3.
Check
power:
Plug
your
amp
into
the
same
outlet
that
you’re
using
to
power
your
A/DA
product.
If
the
amp
turns
on,
then
the
outlet
works.
If
not
try
another
outlet
to
power
your
unit.
4.
Check
native
A/DA
Signal
Chain:
Plug
the
#1
cable
from
your
guitar
into
your
A/DA
product
(input).
Plug
the
#2
cable
between
your
A/DA
product
(output)
and
into
your
amp.
Make
sure
the
A/DA
is
plugged
into
a
working
power
source.
DO
NOT
insert
it
in
a
pedal
chain,
i.e.,
do
not
introduce
any
other
pedals
into
the
signal
chain.
If
your
A/DA
product
works,
your
pedal
chain
most
likely
has
a
problem.
If
you
hear
nothing,
then
their
may
be
a
problem
with
your
individual
unit.
Please
see
the
FAQ
on
how
to
get
an
RA
number.
2.
What
do
I
do
if
my
product
is
not
working?