BLOCK DIAGRAM FRONT PANEL CONTROLS
6 3
INPUT - A low noise, high impedance
instrument input for all types of
instruments, active and passive.
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CHARACTER - The Classic450 provides
a preshaping filter, character, which
operates independently from the filter
section. This gives the user the opportunity
to preshape the sound before the final
processing with the filters.
When pressed to its inner position, a boost
is achieved in both the bass and treble
ranges, while the midrange is being slightly
cut.
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GAIN - Control to adjust the instruments'
signal strength to the right operating level in
the Classic450.
For optimum basic signal level, turn up the
GAIN knob until the PEAK led starts
flashing from the strongest signal from the
instrument.
Note: A correctly set GAIN is vital for the
signal processing to work properly in the
Classic450.
DRIVE - The DRIVE knob controls the
amount of gain in the tube emulation
stage, and provides an extra gain all the
way up to 30 dB. The gain is compensated
over this section producing a warm
overdrive while the output remains more
or less constant. This control also com-
presses the sound when turning up level
up to maximum, producing a pure tube
like limitation.
The lower frequencies below 250 Hz are
bypassed in the Drive stage, producing a
warmer distortion without saturation,
allowing the player to add more low bass
than with conventional bass amps. The
bass is compensated over the tube stage,
which gives the same bass response up to
mid distorted levels.
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VOLUME - The VOLUME knob controls
all volume in the unit, controlling the
poweramp and LINE output. The balanced
output (XLR) is not effected by the setting
of this knob.
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STANDBY – This switch mutes all
outputs and disconnects the speaker
outputs. This is suitable for tuning your
instrument or when you wish to change
speaker connections without powering off
the amp.
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POWER – Powers the unit on or off.
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