SECTION
h
HOW
THE ORGAN OPERATES
X-5
-
18050K
GENERAL
PERFORMANCE DESCRIPTION
1-1
GENERAL
This
section contain a brief description
of the
various
sections of the .instrument.
1-2 CABINETRY
The metal frame
and wood panels-coated with
vinyl leather and CHS-
form the case work.
Case has
a
metal handle for earring
and
a
removable key cover.
1-3
TONE
SOURCE
The X-5
(1805QK) utilizes
the single master
oscillator with the
muitiderivative divider (MDD1
system.
The twelve
(12)
I.C.'s mounted on
the
229-20316 (DV-4B) Divider
Generator Board
provide the division of outputs and
provide the
sine
wave tones -seventy nine (79)
tones- made
use of by
the instrument.
1-4
MANUAL
The 18050K uses two
(2)
44
note Manual that
Upper Manual has 10 contacts
under each key.
The
Manuals
provide means of switching
signals
from
229-20316 Generator
Board and
keying
voltage
to the
219-04312 Gate
&
Percussion
Board.
The lowest one
of
these
contacts is used
for
switching voltage for Gate &
Percussion, and
Others
are used for switching the
signal directly.
1-5 TONE BARS
Three Groups
of Tone Bars
complement the
Upper Manual,
Pedal and Lower Manual.
They
carry the footage
markings and vary
loudness.
1-6
PRESETS OR
TAB VOICING
The three (3)
Presets Tabs may
bring in pre-set
tones
instead of the setting of
the upper Tone
Bars,
And the One
(1)
Preset
Tab may bring in
those of lower Tone
Bars.
They may be used
individually.
The presets have
the
following Tone Bar structure.
Lower
Tone Bars
Preset Ensemble
068666
444
Upper Tone Bars
String
008888 666
FullTibias
806808 006
Theater
Brass 848868
666
Depression of either
Preset Tab
disconnects the
setting of the
Tone Bars, and all Tabs
turn to
"Off" position
and restore
the Tone
Bars.
On
Upper Presets, the
right-hand Tab has
priority
over the left-hand Tabs.
The Tabs used are
of the
current switch type.
The Preset Tabs
are
located
on the
lower
left-hand End Block
Assembly.
The End
Block also
contains other
Tabs whose
functions
are the
following:
Percussion [Second
Harmonic, Third
Harmonic,
Decay, Repeat),
Vibrato and
Leslie (Acoustic-Tremolo).
PERCUSSION
Percussion Tones are switched on by the Tabs,
which are Second Harmonic and
Third Harmonic.
Each
footage of the pitch corresponds to
4'
and
2-2/3'
of Tone Bars. Percussion
affects
all
upper
Tone Bar setting, but not Preset
Tones.
It
has
two decay times,
approximately 1.5 seconds
(Slow) and 80
msec. (Fast).
REPEAT
The same
Percussion gate can be
activated by
a
reiteration or repeat Oscillator,
and affect the
same Percussions. The
Oscillator rate is variable
from 13
times/10 seconds to 500 msec.
The
Repeat Rate control is
located on the lower
right-hand End Block
Assembly. The End Block
also
contains other Tabs and controls
whose
functions are
the following: Pedal, String Bass,
Mute,
Reverb, Volume, and Brilliance.
1-1
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