Radio Shack 975 User Manual

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Concertmate® 975

Portable Stereo Musical Instrument

with 61 Full-Size Keys and 100-Songs

Cat. No. 42-4036

OWNER’S MANUAL

Please read before using this equipment.

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FEATURES

Your Optimus Concertmate 975 P or­table Stereo Musical Instrument is a
state-of-the-art keyboard with many
exciting features. You can set the
keyboard to sound like 100 different
musical instruments or sound ef fects.
To accompany your music, the key­board has 100 rhythms, as well as
auto accompaniments and percus­sion sounds.

Your keyboard’s features include:

100 Prerecorded Tunes

— let you
hear a sample of what you and the
keyboard can do. You can play the
tunes either one at a time or consecu­tively, and you can turn off the melody
or accompaniment portion so you can
play along with the tunes.

100 Tones

— you can set your key­board to sound like anything from a
harpsichord to a honky-tonk piano.

12-Note Pol

phonic Sound

— lets
you play and hear up to 12 notes at
the same time so you can play or cre­ate almost any type of music.

Tempo Co nt ro l

— lets you speed up
or slow down the tempo of any select­ed music pattern.

Auto Accompaniment

— lets you
automatically play a preset harmonic
pattern to match the selected auto­rhythm.

Tune Cont rol

— lets you adjust the
pitch of your keyboard so you can
play in tune with other instruments.

Transpose Function

— lets you in­stantly change the key of the music,
even while you are playing.

Two Built-In Speakers

— provide
excellent sound to help make your
music come alive.

Headphones/Output Jack

— lets
you connect headp hones so you can
play without disturbing others, or an
external amplifier so you can pl ay for
a crowd.

Three Power Options

— let you
power the keyboard from internal bat­teries (not supplied), standard AC
power (with an optional adapter), or
your vehicle’s cigarette-lighter socket
(with an optional adapter) so you can
make music almost anywhere.

100 Auto-Rh

thms

— give you a
steady beat for many styles of music
from rhumba to slow rock.

Fill-In Rh

— lets you insert a

thm

short variation into any auto-rhythm.

©

1998 Tandy Corporation.

Concertmate, Optimus, and RadioShack are registered trademarks used by Ta ndy Corporation.

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All Rights Reserved.

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To fully enjoy the features and func­tions of this electronic keyboard,
please read this m anual carefully and
complet e ly.

This owner’s manual explains

Note:

how to use this electronic keyboard. It
does not teach music.

We recommend you record your key­board’s serial number here. The num­ber is on the bottom of the keyboard.

Serial Number _________________

THE FCC WANTS YOU
TO KNOW

This keyboard complies with the limits
for a Class B digital device as s peci­fied in Part 15 of
limits provide reasonable protection
against radio and TV interference in a
residential area. However, your key­board might cause TV or radi o inter­ference even when it is operating
properly. To eliminate interference,
you can try one or m ore of the f oll ow­ing corrective measures:

• Reorient or relocate the receiv­ing antenna

• Increase the distance between
the keyboard and the radio or TV

• Use outlets on different electrical
circuits for the keyboard and the
radio or TV

Consult your local RadioShack store
if the problem still exists.

FCC Rules

. These

You must use shielded interface ca­bles with this equipment.

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CONTENTS

Preparation ...... ................. ................ .......... ................ ................. ................. .. 5

Connecting Power ..................................................................................... 5

Using Batteries .................................................................................... 5

Using AC Power .................................................................................. 6

Using Vehicle Battery Power ............................................................... 6

Connecting Headphones ........................................................................... 7

Listening Safely ................................................................................... 7

Connecting an External Amplifier .............................................................. 8

Using the Sheet Music Stand .................................................................... 8

Control Locations ................... ................ ................. ................. ......... ............ 9

Operation ...................................................................................................... 10

Basic Operation ....................................................................................... 10

Cancelling Auto Power Off ................................................................ 10

Playing the Prerecorded Tunes ................................................................ 11

Playing Back a Prerecorded Tune ..................................................... 11

Playing Along with a Prerecorded Tune ............................................ 12

Turning Applause Off/On .................................................................. 12

Consecutively Playing Back the Tunes ............................................. 13

Using the Preset Tones ........................................................................... 13

Selecting/Playing a Preset Tone ....................................................... 13

Keyboard Split Tones ........................................................................ 14

Layered Tones .................................................................................. 14

Percussion Sounds ........................................................................... 14

Using the Preset Auto-Rhythms .............................................................. 15

Selecting/Playing an Auto-Rhythm ................................................... 15

Using SYNCHRO .............................................................................. 16

Using FILL-IN .................................................................................... 16

Using Auto Accompaniment .................................................................... 16

Concert Chord ................................................................................... 17

Standard Fingering ........................................................................... 18

Special Features .......................................................................................... 20

Changing Keys ........................................................................................ 20

Tuning the Keyboard ............................................................................... 21

Troubleshootin

Care and Maintenance ................................................................................. 23

Standard Fi n

thm List .................................................................................................. 26

Rh

Specifications ............................................................................................... 27

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........................................................................................... 22

ering Chord Chart ................................................................ 24

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PREPARATION

CONNECTING POWER

You can power your keyboard in any
of these ways:

• internal batteries (see “Using Bat-

teries”)

• standard AC power using an

optional AC adapter (see “Using
AC Power” on Page 6)

• a vehicle’s cigarette-lighter

socket using an optional DC
adapter (see “Using Vehicle Bat­tery Power” on Page 6)

:

Notes

• Connecting an AC o r DC adapter

automatically disconnects any
internal batteries.

• Always disconnect the AC or DC

adapter when you finish using the
keyboard.

Using Batteries

Your keyboard can u se s ix AA batter­ies (not supplied) for power. For the
best performance, w e rec om m end al­kaline batteries, such as RadioShack
Cat. No. 23-557.

Cautions:

• Use only fresh batteries of the

required size and recommended
type.

• Do not mix old and new batteries,

different types of batteries (stan­dard, alkaline, or rechargeable),
or rechargeable batteries of dif­ferent capacities.

1. Set

2. While pressing the tab on the bat-

3. Put six AA batteries into the com -

4. Replace the cover.

When the keyboard stops operating
properly, replace all six batteries.

Cautions

POWER/MODE

tery compartment cover, pull the
cover up to remove it.

partment as indicated by the
polarity symbols (+ and –)
marked below the compartment.

:

• If you do not pl an to use the key­board for a week or more, or if
you plan to use only an AC or DC
adapter, remove the batteries.
Batteries can leak chemicals t hat
can destroy electronic parts.

• Dispose of old batteries promptly
and properly. Do not burn or bury
them.

to

OFF

.

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Using AC Power

You can power your keyboard from
standard AC power using an optional
9-volt AC adapter (such as Ra­dioShack Cat. No. 273-1656).

Cautions

• You must use an AC adapter that

• Always p lug the AC adapter i nto

•Be sure

Follow these steps to connect an AC
adapter to the keyboard.

:

supplies 9 volts and delivers at
least 800 mA. Its center tip must
be set to negative and its plug
must fit the keyboard’s

DC 9V

jack. The recommended adapter
meets these specifications. Using
an adapter that does not meet
these specifications could dam­age the keyboard or the adapter .

the keyboard before you plug it
into the AC outlet. Always unplug
the AC adapter from the AC out­let before you unplug it from the
keyboard.

POWER/MODE

before you connect or dis-

OFF

is set to

connect the adapter.

2. Plug the AC adapter’s other end
into a standard AC outlet.

Using Vehicl e Battery Power

You can power your keyboard from
your vehicle’s cigarette-lighter socket
with an optional 9-volt DC adapter
(such as RadioShack Cat. No. 273-

1815).

Cautions:

• You must use a DC a dapter that
supplies 9 volts and delivers at
least 800 mA. Its center tip must
be set to negative and its plug
must fit the keyboard’s
jack. Using an adapter that does
not meet these specifications
could damage the keyboard or
the adapter.

• Always plug the DC adapter into
the keyboard before you plug it
into the cigarette-lighter socket.
Always unplug the DC adapter
from the cigarette-lighter socket
before you unplug it from the key­board.

•Be sure

OFF

POWER/MODE

before you connect or dis-

connect the adapter.

DC 9V

is set to

1. Connect the AC adapter’s 5.5
mm outer diameter/2.1 mm inner
diameter barrel plug to the

DC 9V

jack on the back of the keyboard.

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Follow these steps to connect a DC
adapter to the keyboard.

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1. Plug the DC adapter’s 5.5 mm
outer diameter/2.1 mm inner
diameter barrel plug into the
cable so it reads – TIP.

2. Set the DC adapter’s voltage
switch to 9 volts.

3. Connect the DC adapter’s barrel
plug to the

jack on the back

DC 9V

of the keyboard.

4. Plug the DC adapter ’s other end
into your vehicle’s cigarette­lighter socket.

If the keyboard does not oper-

Note:

ate when you use the DC adapter,
unplug the cord from the cigarette­lighter socket and clean any ashes or
debris from the socket. If your key­board still does not work, check the
fuse in the DC adapter and replace it
if necessary.

CONNECTING
HEADPHONES

To listen to your keyboard without
disturbing others, you can connect an
optional pair of stereo headphones
with a
dioShack store sells a wide selection
of headphones.

Insert the headphones’
into the
back of the keyboard.

Note

connects the keyboard’s built-in
speakers.

1

/4-inch plug. Your local Ra-

1

/4-inch plug

PHONES/OUTPUT

jack on the

: Connecting headphones dis-

Listening Safely

To protect your he aring, follow these
guidelines when you use head­phones.

• Set the volume to the lowest s et­ting before you begin listening.
After you begin listening, adjust
the volume to a comfortable level.

• Do not listen at extremely high
volume levels. Extended high­volume listening can lea d to per­manent hearing loss.

• Once you set the volume, do not
increase it. Over time, your ea rs
adapt to the volume level, so a
volume level that does not cause
discomfort might still damage
your hearing.

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CONNECTING AN
EXTERNAL AMPLIFIER

To amplify your keyboard’s sound,
you can connect it t o an optional ex­ternal amplifier using an audio cable

1

with a
To connect an external amplifier to

your keyboard, insert the cable’s
inch plug into the
jack on the back of the keyboard, and
connect the cable’s other end to the
amplifier’s input jack(s) (such as AUX
IN or TAPE IN).

/4-inch plug (not supplied).

PHONES/OUTPUT

1

/4-

USING THE SHEET
MUSIC STAND

To easily view sheet music while
playing your keyboard, insert the sup­plied sheet music stand into the holes
on the top back panel.

Your local RadioShack store sells a
full line of amplifiers, speakers, and
connection cables.

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CONTROL LOCATIONS

Speaker

100 RHYTHMS
List

100 SONGS List

100 TONES List

SYNCHRO/FILL-IN

VOLUME

POWER/MODE

TEMPO

START/STOP

SONG

TONE

Number
Keys

+/_

LEFT
ON/OFF

TRANSPOSE/
TUNE

RHYTHM

Speaker

RIGHT
ON/OFF

STOP

PLAY/
PAUSE

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