CHANNEL II -
NORMAL
Channel
II
allows modified tone control action (for a bass guitar) and also allows proper
equalization for a standard electric guitar.
The electric guitar
has
a frequency range
of
from approximately
74Hz
(open low
El
to 1320Hz
(12th fret high
El.
The dominant harmonic overtones occur
in
the 128-5280Hz frequency range .
The relationship between the fundamental frequency and these harmonics determine the
tonal quality
of
the amplified sound. The tone control circuitry provides the musician with the
means to control the relationships between these frequencies.
The tone control circuits for the electric guitar
9
re
configured very much like those
used
on
the older tube-type amplifier. This arrangement
has
the advantage
of
unique boost and cut points
and
the disadvantage that if
all
controls
are
adjusted to minimum,
no
output signal results.
Channel
II
tone control circuits, like those used
in
Channel
I,
can only control the frequencies
within their operating range. However, control action for
an
electric guitar will
be
more apparent
under most operating conditions than for the electric
bass,
because
of
the ability of the guitar to
play chords.
The strumming
of
an
electric guitar produces
an
extremely complex signal which,
in
most
instances,
has
a fundamental frequency and at least one harmonic overtone
in
each
of
the tone
control operating ranges.
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