Overdrive - Hammond XK-5 Owner's Manual

54
Th e Overdrive gives distortion to the sound by increasing the pre-amplifi er input gain.
[OVERDRIVE] button
Switches ON(LED lit) or OFF the Overdrive eff ect.
[OVERDRIVE DEPTH] knob
Adjusts depth of the Overdrive eff ect.
NOTE: The Overdrive eff ect aff ects all organ types except "Pipe".
NOTE: You can fi ne-tune the Overdrive eff ect (P. 102).
Owner's Manual

OVERDRIVE

ER
N TREBLE
THIRD
OVERDRIVE
DEPTH AMOUNT
EFFECT
TUBE CIRCUITS
The output of any amplifier has its limit. When the amp output
reaches its limit, it "Clip"s. It is called "saturation" or "clipping
distortion".
The volume does not only further increase but harmonics, not existed
in the original sound, are added. This is the "DISTORTED SOUND".
The amplifier made of semiconductor circuits, as of a transistor,
comparatively clearly clips. However, the circuits made of tubes,
especially of the triodes, the distortion is vague.
From the viewpoint of musicians, the tube amp has a merit of
producing smooth sound changes from "pp" to "ff", playing easily
with full expression.
The sound obtained from performing with dynamics, by setting the
gain of the amp beginning to distort (called Crunch) has a bigger
vantage than off -setting all the demerit of the tube.
Triodes are equipped in the preamp of the B-3/C-3. Pentodes are used in the
power amplifi er of the Leslie etc. The pentode amplifi ers gives clip compara-
tively close to the semiconductor amps.
DEPTH
REVERB
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