Hammond Organ Service Manual - Early Models (A,B ... - Audiofanzine

B-3, C-3, RT-3, A-100 & D- 100 is introduced when the upper manual "B' preset key is
THE
CONCERT MODEL
HAMMOND
ORGAN
THE
HOME MODEL
HAMMOND
ORGAN
FIGURE Z
PRESET KEYS
At the left end of each manual are twelve keys identical to the playing keys
except reversed m color. (Fig. 3). These are replaced by twelve nuinbered
buttons on the Model E console.
When a preset key is depressed it locks
down and is released only when another
is depressed. The exception to this is
the cancel key at the extreme left, which
serves only to release any key which
may be locked down. Only one preset
key is used at one time. If by mistake
two are depressed and locked, they may
be released by means of the cancel key.
Each preset key, with the exception of
the cancel key and the two adjust keys
at the extreme right of the group, makes
available a different tone color which
has been set up on the preset panel located
inside the console- These tone
colors are set up at the factory in
FIGURE 3
accordance with a standard design which
has been found to best meet the average organist' s requirements. They may be
changed, if desired, by removing the back of the console and changing the preset
panel connections in accordance with instructions on a card located near the preset
panel.
When either adjust key is depressed, the organ speaks with whatever tone color is set
up on the harmonic drawbars associBted with that key. The percussion effect on Models
1-14
depressed (see ''percussion" also).