Hammond XK-5, Owner'S Playing Manual

Page: 64 / 174

HA<O> XK-5 Owner’s Playing Guide
64
[UPPER] tab
Turns the Vibrato/Chorus “ON”(LED lit) and “OFF” for the Upper Manual.
[LOWER] tab
Turns the Vibrato/Chorus “ON”(LED lit) and “OFF” for the Lower Manual and Pedals.
[VIBRATO AND CHORUS MODE] Rotary Knob
Controls the depth of bothVibrato and Chorus.
V-1:
Lightest depth of Vibrato
V-2:
Standard depth Vibrato
V-3:
Wide Vibrato
C-1:
Lightest depth of Chorus
C-2:
Standard depth Chorus
C-3:
Fullest amount of Chorus
NOTE: You can customize the Vibrato and Chorus effect to your liking. This is covered on the next page.
Scanner
Amplifier
Amplifier
Sections Of Vibrato Line
UPPER
BANK KEY PATCH
PEDAL LOWER
VIBRATO & CHORUS
The Hammond Vibrato & Chorus is another hallmark of the “Hammond Sound.”
“Vibrato” is created by a periodic raising and lowering of pitch, comparable to the effect produced when a violinist moves his finger back
and forth on a string while playing, varying the frequency while maintaining constant volume.
On a tone-wheel Hammond Organ equipped with Vibrato & Chorus, the vibrato circiutry consists of a series of plural coils or low-pass
filter sections called a “delay line” or “line box” and a motor-driven “scanner” which, as the name implies, scans the delay line and progres-
sively retards the phase, creating the Vibrato effect.
“Vibrato Chorus,” an effect similar to the effect of two or three slightly out-of-tune frequencies mixed together, is obtained when the
vibrato output signal is mixed with a portion of signal without vibrato.
The diagram below shows the vibrato equipment of a typical tone-wheel Hammond Organ such as a B-3.
The Vibrato & Chorus controls of the XK-5 are pictured below. Their function is similar
to that on tone-wheel Hammonds such as B-3, C-3, A-100, RT-3 and D-100.