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FEATURES
© 1997 Tandy Corporation.
All Rights Reserved.
RadioShack, Concertmate, and Optimus are registered trademarks used by Tandy Corporation.
Your Optimus Concertmate 690 Porta-
ble Electronic Keyboard is a state-of-
the-art musical instrument with many
special features. It can sound like 100
different musical instruments or sound
effects, and its preset rhythms and ac-
companiments make it easy to use and
fun! This versatile electronic keyboard
is ideal for anyone who wants to make
music, from the beginner to the experi-
enced musician.
Your Concertmate 690’s features in-
clude:
Standard Size Keys
— let you easily
transfer what you learn using the Con-
certmate 690 to other keyboard instru-
ments.
Built-In Demonstration Tune
— lets
you hear a sample of what you and the
Concertmate 690 can do.
Polyphonic Sound
— lets you play
and hear up to eight notes at the same
time so you can create or play almost
any type of music.
Poly/Texture Key
— lets you adjust
the Concertmate 690’s polyphony
(harmony) and sound texture.
100 Different Sounds
— let you set
your Concertmate 690 to sound like
anything from a banjo to an insect
when you press a key.
100 Preset Auto-Rhythms
— give
you a steady beat for almost any style
of music from rock to waltz.
Auto Accompaniment
— lets you au-
tomatically play a harmonic pattern to
match any auto-rhythm.
Tempo Controls
— let you speed up
or slow down the tempo of any auto-
rhythm or auto accompaniment.
Fill-In Rhythm
— lets you insert a
short variation into any auto-rhythm.
Three Power Options
— let you pow-
er the Concertmate 690 from internal
batteries (not supplied), a standard AC
outlet (using an optional adapter), or
your vehicle’s cigarette lighter socket
(using an optional adapter).
To fully enjoy the features and func-
tions of this electronic keyboard,
please read this manual carefully and
completely.
Note:
This manual explains how to use
this electronic keyboard. It does not
teach music.
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