Hammond L series User Manual

SELF
STARTING
SYKCHRONOUS
MOTOR
CONTROL
SWITCH
ASSEM.
PERCUSSION
CUT
OFF ADJUST
PEDAL
CLICK
FILTER
wound
on
the magnet. This
small
voltage,
when
suitably
filtered, produces
one
note
of
the musical
scale, its
pitch
or
frequency
depending
on the
number of
teeth passing
the
magnet each second.
A note
played
on
either
manual
of the
organ consists
of
a
fundamental pitch
and
a
number of
harmonics,
or multiples
of
the
fundamental
frequency. The
fundamental
and
harmonics
available on
each
playing
key are controllable by
means
of
drawbars.
By
suitable
adjustment
of these
controls
the
player
may
vary
the
tone colors
at
will.
Several pre-selected
tones
are
also
available by
use
of
the
preset tabs.
Mixed tones
from the
upper manual and
lower manual
and pedals
go
through
the
pre-amplifier and the
"vibrato
amplifier".
Vibrato
may be
added,
depending
on the
position of the vibrato
selector
tabs.
The
tones
then
pass
through the
expression
control and
additional stages
of amplifica-
tion
before reaching the
speaker.
Percussion tones
are
produced
by
borrow-
ing a
signal
from
the
upper manual
2nd
harmonic
drawbar, 3rd
harmonic
drawbar,
or both, and
conducting
the signal
through
the
percussion
amplifier, where
its
decay
characteristics
are controlled.
A
portion
of
this
signal
is
returned
to the
respective
drawbar.
The percussion
signal
is
then combined
with the
signal
from
the
manuals
after
the
vibrato system
but
before
the
expression
control.
The control tubes
are
keyed through the 6th
harmonic key
contacts and
busbar.
The pedal tones do
not
require drawbars
for
tone
color
variation, because
they are
produced as
complex
tones
by
special
tone wheels.
The
single
pedal drawbar
adjusts the
volume
of the pedals
relative
to that
of
the manuals,
and the
pedal signal
then
is
combined with
the
signal
from the
manuals
before passing into
the
matching
transformer.

Hammond L series Specifications

General

Brand	Hammond
Model	L series
Category	Musical Instrument
Language	English