Yamaha Electone B-20BR User manual

GUIDE TO YOUR
YAMAHA ELECTONE

Introduction ..-
Here is Your Yamaha Electone B-20BR ---
Keyboards ---
The Compass of the Electone B-20BR -
Tone Levers «..-.-........-
Upper Preset Tones -...
Effect Levers ----
Effect Controls and Selector
Sound-in-Motion Tremolo --
Auto Rhythm Section ----
Various Rhythms and Their Usi
Playing The Yamaha Electone
Let's Learn to Read Music
Let's Play Accompaniment -.--
To Fully Enjoy Your Electone -
Care of Your Electone ----
Do Not Be Alarmed If --—
Specifications ---

Intr
oduc
———
—
—
Congratulations
upon
your
selection
of
this
Yamaha
Electone.
It
is
one
of
the
world’s
most
advanced
instruments,
carefully
designed
and
built
to
provide
a
lifetime
of
musical
enjoyment.
To
make
sure
you
derive
the
most
from
its
generous
features
and
durable
IC
&
FET
circuitry,
please
read
this
manual
thoroughly
before
attempting
to
play.
Then
keep
it
handy
for
reference.
Use
it
to
develop
your
own
techniques
and
to
teach
others.
With
a
little
care
your
Electone
will
become
a
creative
center
of
family
enjoyment
for
decades.
aie

Here is your Yamaha Electone B-20BR mmn

Briliance
|) Preset Tone Selectors
@ Peds Sustain
D
Auto
Rhythm
section
Tremolo
Sector
@

Mey;
U
The B-20BR has three keyboards. The upper two are called “manuals” and the other, for the feet, composed
of “pedals.”
Upper Manual 44keys — (3A octaves)
Lower Manual 44keys — (3%'octaves)
Pedals. l3pedals (1 octave)
The Electone is designed to permit playing the melody on the upper manual with the right hand, the chords
on the lower manual with the other, and bass notes on the pedals with either foot.
All keys and pedals are arranged in the traditional keyboard method: two black keys, three black keys. Each
white key has a name (from A to G), and the blacks are sharps or flats, "C" is always the white key just
below the left black key in the two-black-key group. Any complete set of seven white keys is called
an “octave.”
AHCDEFG
Same
pattern
Same
pattern
Manual
1
One
octove
)
1
One
octave
1
“C” is always at the bottom of the group of two black keys.
Both end pedals are “C”.
245
|

The
Compass
of
the
Electone
B-20BR
———
eo e;
sees
Tuned to 440Hz
f n |
FG
AHD
E
EG
A
HC
D
E
F
C|DE|FG|
AH
Lower manual
ricAnic
E
ri
Anc
o
z|

Tone Levers
To the left of both upper and lower manuals are a series of tone levers which control the voices (instrument
sounds)
which
will
sound
when
the
keys
are
depressed.
They
are
divided
into
groups
for
upper,
lower
and
pedals, so that different registration can be set for each.
Upper Manual Levers B voices
Lower Manual Levers 5 voices
Pedals 2 voices
(i
3)
TUTUTTUT
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wO i 8 236
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TOTTT "TT
moo We cmo woo duo smn oss am
—
-B
quos
Na J
Exclusive Yamaha Tone Lever System ©
Each lever provides two methods of control. One
is by continuously moving the lever from off to
full, to achieve the exact setting for that tone, and
thus balancing the overall tone setting with perfect
Precision. Each lever also has two easy-to-feel click
stops, at 1/3 and 2/3 positions. This lets you
refind any setting with mathematical precision and
no guesswork in a matter of seconds.
Bear in mind that the total tone lever settings for
a particular manual will affect that manual's overall
volume. This will be an expressive aid if used
properly, a drawback if itis forgotten.
(front)
—

Tone Lever Registration
For the best result of your performance, you should always take into consideration the correlative tone
volume balance among the three keyboards i.e., upper manual, lower manual and pedals,
When you wish to emphasize the melody played on the upper manual, for example, the volume of the
lower manual and pedals should be kept under that of the upper manual. On the contrary, if you want to
stress the accompaniment part on the lower manual or pedals the volume of that particular keyboard
should be adjusted relatively larger than the others.
Yamaha's unique variable volume control tone levers enable you to control this correlative tone volume
among three keyboards. Judge by your own ears and adjust the position of tone levers in advance. Each
tone lever slides continuously from off to full volume for sensitive balance control.
Three distinct stops also convenient to click your favorite tonal combinations into place for quick, easy
settings.
(EXAMPLE)
@
LOWER
€
UPPER
@ PEDAL € CONTROLS & SELECTORS

Harmonics
The B-20BR has four different tonal harmonics, icated by the numbers
16”, 8', 4' and 2%". These are standard musical abbreviations showing the
tone's pitch in relation to the fundamental (written note). An 8' tone
will sound just as it has been written. A 16' tone (meaning that the wave
length of the vibrations are twice as long as 8”, or half as fast) will provide
a tone exactly one octave lower than the written note. Similarly, 4' tones
are one octave higher than the written note, 2" tones are one octave and
a fifth higher than the 8' fundamental.
» OCTAVE
Mo à nr
m
In other words, the 16' lever extends the lower manual a full octave as shown by the dotted line in the
illustration.