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Stereo Dual-Cassette
Cat. No. 32-1159
OWNER’S MANUAL
Please read before using this equipment.
Karaoke Center
with AM/FM Radio
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FEATURES
Your Optimus Stereo Dual-Cassette
Karaoke Center lets you b e the “star”
as you sing along with your favorite recordings and hear your voice wi th the
music through the spea kers. You can
sing along with regular cassette tapes
or special karaoke cassette tapes
(such as the supplied tape) that let
you balance the volume of the prerecorded voice, your voice, and music
tracks.
You can also connect another audio
source (such as a stereo VCR or a CD
player) to the system and sing along.
If you connect a stereo VCR and play
a karaoke music video cassette, the
cassette shows t he l yrics on a T V and
lets you adjust the volume of the prerecorded original singer’s voice and
music.
Additional karaoke cassette
Note:
tapes, as well as karaoke video cassettes, are available through RadioShack Unlimited. Contact your
local RadioShack store for ordering information.
The music system’s feat ures include:
Supplied Karaoke Audio Tape
—
lets you sing along with the m usic and
adjust the volume of the prerecorded
voice and music.
Automatic Voice Control
— using a
karaoke tape, lets you replace the prerecorded original singer’s voice with
your voice.
Supplied Microphones
— let you
sing along with the music through the
speaker.
Dual Microphone Jacks
— let you
use two microphones simultaneously
to sing duets or for lead and background vocals.
Auxiliar
Input Jacks
— allow input
from another audio source, such as a
stereo VCR or CD player.
Auxiliar
Output Jacks
— allow output to another audio compone nt, such
as an equalizer/booster or a PA system.
Dual Cassette Decks
— let you play
one side of two tapes in a row , or dub
from one cassette to another.
Recordin
— lets you record your
voice as you sing along with a tape or
an external audio source connected to
the system.
Auto-Stop
— automatically stops a
tape when it finishes playing or recording, to protect the tape and tapehandling parts.
© 1996 Tandy Corporation.
RadioShack is a trademark used by Tandy Corporation.
Optimus is a registered trademark used by Tandy Corporation.
All Rights Reserv ed .
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CAUTION
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5 Band Frequency Equalizer — lets
you precisely adjust the tone and
sound to your preference and your
room’s unique acoustics.
Echo Control — lets you add an echo
to your voice for a concert hall effect.
Tape Speed Control — adjusts the
tape speed to match your voice pitch.
Balance Control — adjusts the balance between the left and right speakers if you use an external spea ker, or
adjusts the balance between t he prerecorded original singer’s voice and
the music if you use a karaoke tape.
Built-In Speaker — lets you share the
musi c with fr iends .
External Speaker Jack — lets you
connect the system to an external
speaker for stereo effects.
Warning: To prevent f ire or shoc k
hazard, do not expose this product
to rain or moisture.
RISK OF ELECTRIC SHOCK.
DO NOT OPEN.
CAUTION: TO REDUCE THE RISK OF
ELECTRIC SHOCK, DO NOT REMOVE
COVER OR BACK. NO USER-SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED PERSONNEL.
This symbol is inten ded to alert yo u
to the p r es en c e o f un in su lated dan gerous voltage within the product’s
enclosure that mi ght be of suff icient
magnitude to constitute a risk of
electric shock. Do not open the
product’s case.
This symbol is intended to inform
you that important operating and
!
maintenance instructions are included in the literature accompanying this product.
!
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CONTENTS
Connections ......................................................................................................... 5
Connecting Another Audio Source to the Input Jacks ..................................... 5
Connecting an Audio Component to the Output Jacks .................................... 5
Connecting an External Speaker ..................................................................... 5
Connecting Power ........................................................................................... 6
the 5 Band Equalizer ................................................................................. 7
Usin
the Radio .................................................................................................... 8
Usin
the Cassette Deck ................................................................................... 10
Usin
Loading a Cassette Tape ............................................................................... 10
Playing a Cassette Tape ................................................................................ 11
Normal Play ............................................................................................ 11
Consecutive Play .................................................................................... 12
Sin
Usin
Recordin
Maintenance ....................................................................................................... 19
Specifications ..................................................................................................... 22
Along ..................................................................................................... 13
Singing with a Cassette Tape ........................................................................ 14
Singing with Another Audio Source ............................................................... 15
Optional Components ............................................................................ 16
Listening to Another Audio Source ................................................................ 16
Using Another Audio Component .................................................................. 16
........................................................................................................... 17
Recording Tips .............................................................................................. 17
Recording Your Voice with Music .................................................................. 17
Recording from the Radio .............................................................................. 18
Dubbing a Cassette Tape ..................................................................... ....... .. 18
Tape Care Tips .............................................................................................. 20
Preventing Accidental Erasure ................................................................ 20
Erasing a Cassette Tape ......................................................................... 20
Cleaning the Tape-Handling Parts .......................................... .. ............ .. 20
Restoring Tape Tension and Sound Quality ............................................ 21
The FCC Wants You to Know ........................................................................ 21
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CONNECTIONS
Caution:
cord until all other connections are
complete.
Do not plug in the power
CONNECTING ANOTHER
AUDIO SOURCE TO THE
INPUT JACKS
You can connect another audio
source (such as a stereo VCR or CD
player) so you can sing along with the
audio source’s sound. Connect the
source’s stereo audio output jacks to
the system’s
AUX IN L
and R jacks.
CONNECTING AN AUDIO
COMPONENT TO THE
OUTPUT JACKS
You can connect an audio comp onent
(such as a PA system amplifier) to the
system’s
AUX OUT L
the system’s sound through the component.
AUX OUT L
and R jacks let you hear
and R jacks. The
If your audio source does not
Note:
have AUX OUT L and R jacks, but has
only a headphon e jack (such as on a
portable tape or CD player), use a
shielded Y-adapter cord with phono
jacks on each end (such as Cat. No.
42-2475). Connect the single-plug end
to the audio source’s headphone jack,
and connect the other end’s two
phono plugs to the system’s
and R jacks.
AUX IN L
CONNECTING AN
EXTERNAL SPEAKER
You can connect an external 20-watt
stereo speaker with 8-ohm impedance
to the system’s
jack for stereo effect.
EXT. 8OHM SPEAKER
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CONNECTING POWER
When you have made all c onnect ions,
plug your system’s pow er cord into a
standard AC outlet.
Caution:
has a polarized plug (one blade is wider than the other). If you have difficulty
inserting the plug into the outlet, do
not force it. Turn the plug over and try
again.
Your system’s power cord
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USING THE 5 BAND EQUALIZER
You can use the 5 band frequency equalizer to customize the sound you hear
through the speaker. Each of the five controls lets you adjust the sound level in a
specific frequency range. Sli de the control up to boost or down to reduce the level.
If you set the control to the center position (
0
), the frequency is unaltered.
120 Hz
rumble or other low-frequency noise.
300 Hz
1 kHz
cals).
3.3 kHz
10 kHz
— Adjusts the frequencies in the low-bass range (bass drums). Reduc es
— Adjusts mid-range low frequencies (organ notes).
— Adjusts the range of frequencies where the ear is most sensitive (low vo-
— Adjusts mid-range high frequencies (high vocals).
— Adjusts high-frequency sounds (cymbals, flutes, and violins).
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USING THE RADIO
Warning:
MASTER VOLUME
To protect your hearing, set
MIN
to
before you
play the radio.
1. Press
POWER
to turn on the sys-
tem. The POWER indicator lights.
2. Set
FUNCTION SELECTOR
TUNER
.
to
3. Set
BAND SELECTOR
STEREO
4. Rotate
, or FM.
TUNING
to AM,
to select the
desired station.
Notes:
• The AM antenna is built in. For
the best AM reception, adjust
the radio’s position.
FM
• If the
FM STEREO
BAND SELECTOR
, the FM STEREO
is set to
indicator lights when the radio
receives an FM broadcast in
stereo. If the FM reception is
weak, set
FM
to improve it. The sound is
BAND SELECTOR
to
mono, but the reception shoul d
improve.
5. Rotate
MASTER VOLUME
to a
comfortable listening level.
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6. Adjust
BALANCE
if you con-
nected an external speaker.
7. Adjust the
5 BAND EQUALIZER
controls as desired.
To turn off the system, press
POWER
.
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USING THE CASSETTE DECK
You can play a casset te tape in e ither
cassette deck, and record tapes in
TAPE 1.
Warnin
MASTER VOLUME
play a cassette tape.
To protect your hearing, set
:
MIN
to
before you
LOADING A CASSETTE
TAPE
Note:
by turning the cassette’s hub with a
pencil or your finger. If you do not remove excess slack, the tape might become tangled in the record/playback
mechanism. Avoid touching the tape.
Take up any slack in the tape
1. Press
cassette compartment.
2. Load the cassette tape with its
open edge facing down, the side
you want to play or record on f acing you, and the full reel to the left.
STOP/EJECT
to open the
Follow these steps to load a cassette
tape in TAPE 1 or TAPE 2.
10
3. Close the compartment door.
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PLAYING A CASSETTE
TAPE
You can play a casset te tape in e ither
TAPE 1 or TAPE 2, or you can load
cassette tapes in both decks and play
them consecutively.
Normal Play
4. Press
PLAY
tape is loaded.
on the deck where the
Follow these steps to play a cassette
tape in TAPE 1 or TAPE 2.
1. Load a cassette tape in TAPE 1 or
TAPE 2.
2. Press
POWER
to turn on the sys-
tem. The POWER indicator lights.
3. Set
TAPE
FUNCTION SELECTOR
.
to
5. Adjust
5 BAND EQUALIZER
MASTER VOLUME
controls for
the desired sound.
6. Adjust
BALANCE
if you con-
nected an external speaker.
7. Press
tape. Press
STOP/EJECT
STOP/EJECT
to stop the
open the cassette compartment.
Then remove the cassette tape.
Turn the tape over and press
play the other side.
and the
again to
PLAY
to
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Notes:
• To temporarily stop play, press
PAUSE
. Press
PAUSE
again to
resume play.
• To rapidly wind the tape forward or
backward, press
REWIND
. Press
FAST-F
STOP/EJECT
when you reach the desired section.
or
Consecutive Play
Follow these steps to pl ay one side of
the tape in TAPE 2, then play one side
of the tape in TAPE 1.
1. Follow Steps 1–3 under “Normal
Play” on Page 11, loading tapes in
both TAPE 1 and TAPE 2.
PLA Y
PAUSE
on TAPE 2.
PLAY
then
on TAPE
2. Press
3. Press
1.
The tape in TAPE 2 plays to the side’s
end. Then the tape in TAPE 1 plays to
its side’s end.
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SINGING ALONG
Now get ready for some fun! In this
section, we tell you how to use your
system’s karaoke features. First, plug
a supplied microphone’s
1
/4-inch plug
into one of the microphone jacks.
Your friends can also sing along
Note:
with the music if you connec t a unidirectional 600-ohm dynamic microphone with a
1
/4-inch plug to the
system’s other microphone jack. Your
local RadioShack store sells a wide
variety of microphones.
Next, you can use these four controls
to get the sound just right.
AUTO VOICE CONTROL
— While you
play a karaoke cassette tape, rotate
AUTO VOICE CONTROL
to replace the
prerecorded voice with your voice. If
LOW
AUTO
. If you
ECHO
you have a high voice, turn
VOICE CONTROL
have a low voice, turn
CONTROL
ECHO
towa r d s
— This adds an echo effect to
towards
HIGH
.
AUTO VOICE
your voice while you sing. rotate
between
LOW
and
HIGH
for the de-
sired effect.
T APE SPEED
rotate
— While you play a tape,
TAPE SPEED
towards
LOW
slow down the tape or towards
to speed it up.
to
HIGH
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BALANCE
karaoke cassette tape, turn
— While you play a
BALANCE
to adjust the balance between the prerecorded original singer’s voice and
the music. If you use an external
speaker, turn
BALANCE
to adjust the
balance between the left and right
speakers.
SINGING WITH A
CASSETTE TAPE
Follow these steps to sing along with a
regular or karaoke cassette tape (such
as the one supplied).
3. Set
4. Press
5. Adjust
FUNCTION SELECTOR
TAPE
.
PLAY
to play the tape.
MASTER VOLUME
5 BAND EQUALIZER
and the
controls to
the desired sound.
6. Set the microphone’s
ON/OFF
switch to ON. Sing directly into the
microphone along with the music.
7. Use
UME
MIC 1 VOLUME
to adjust the volume of each
MIC 2 VOL-
or
microphone.
to
1. Press
POWER
to turn on the sys-
tem. The POWER indicator lights.
2. Load a prerecorded tape in TAPE
1 or TAPE 2.
14
8. Adjust
ECHO
to add an echo to
your voice.
9. Adjust
TAPE SPEED
.
10. If you are using a karaoke cassette tape, adjust
AUTO VOICE CONTROL
BALANCE
and
for the
desired effect.
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SINGING WITH
ANOTHER AUDIO
SOURCE
If you connected another audio source
(see “Connecting Another Audio
Source to th e Input Jacks” on Pag e 5),
follow these steps to sing along with
that audio source.
1. Set
2. Press
FUNCTION SELECTOR
POWER
to turn on the sys-
to
tem. The POWER indicator lights.
3. Turn on the audio source.
4. Adjust
5 BAND EQUALIZER
MASTER VOLUME
and the
controls for
the desired sound.
5. Set the microphone’s
ON/OFF
switch to ON. Sing directly into the
microphone along with the music.
MIC 1 VOLUME
Use
UME
to adjust your voice’s vol-
MIC 2 VOL-
or
ume.
AUX
.
6. When you finish, pres s
POWER
turn off the system, turn off the
audio source, and set the microphone’s
ON/OFF
switch to
The POWER indicator turns off.
to
OFF
.
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USING OPTIONAL COMPONENTS
LISTENING TO
ANOTHER AUDIO
SOURCE
If you connected another audio source
(see “Connecting Another Audio
Source to th e Input Jacks” on Pag e 5),
follow these steps to listen to that
source.
Warnin
prevent damage to the syste m, always
set the source’s and the system’s volume controls to their lowest settings
before turning on the source and the
system.
1. Set
To protect your hearing and
:
FUNCTION SELECTOR
to
AUX
USING ANOTHER AUDIO
COMPONENT
If you connected an audio component
(see “Connecting an Audio Component to the Output Jacks” on Page 5),
follow these steps to listen to the system’s sound through that component.
Warnin
prevent damage to the audio system,
always set the system’s and the audio
component’s volume controls to their
lowest settings before you turn on the
component and the system.
1. Set the
.
To protect your hearing and
:
FUNCTION SELECTOR
AUX
.
to
2. Press
3. Turn on the audio source.
4. Adjust the system’s
5. To turn off the system, press
16
POWER
tem. The POWER indicator lights.
UME
and the
controls for the desired sound.
POWER
turns off. Then turn off the audio
source.
to turn on the sys-
MASTER VOL-
5 BAND EQUALIZER
. The POWER indicator
2. Press
3. Turn on the audio component.
4. Sing through the microphone (see
5. When you finish listening , turn off
POWER
tem. The POWER indicator lights.
“Singing Along” on Page 13).
the audio componen t. Then press
POWER
POWER indicator turns of f .
to turn on the sys-
to tur n o ff the sys te m. The
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RECORDING
You can record as you sing along with
a tape or another audio source. You
can also record only the external audio source, or dub from one cassette
tape to another.
RECORDING TIPS
• Tape quality greatly affects the
quality of the recording. We recommend RadioShack Supertape
Extended Range or Low-Noise
Type 1 tape. We do not recommend long-play cassette tapes,
such as C-120s, because they are
thin and can easily tangle in the
cassette mechanism. For lownoise, wide-range recordings, u se
normal-bias tape.
• Before recording, be sure the tape
you are using has its eraseprotection tabs in place. See “Preventing Accidental Erasure” on
Page 20.
• Recording automatically stops
when the tape in TAPE 1 reaches
the end. To record on the other
side, turn over the tape.
RECORDING YOUR
VOICE WITH MUSIC
1. Load a blank tape, or one that you
want to record over, into TAPE 1,
with the side you want to record
on facing you, and the full reel to
the left.
2. Follow Steps 1–10 under “Singing
with a Cassette Tape” on Page 14
or Steps 1–5 under “Singing with
Another Audio Source” on
Page 15.
3. Press
begin recording.
PLAY
Note:
temporarily stop recording. Press
PAUSE
4. Press
stop recording.
PLAY
5. Press
stop the audio source.
RECORD
both lock down.
Press
again to resume recording.
STOP/EJECT
release.
STOP/EJECT
on TAPE 1 to
RECORD
PAUSE
on TAPE 1 to
on TAPE 1 to
RECORD
on TAPE 2 or
and
and
Follow these steps to record your
voice along with music from a tape in
TAPE 2 or an audio source connected
to the system’s
AUX INPUT
jacks.
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RECORDING FROM THE
RADIO
1. Set
2. Load a blank tape (or one that you
3. Press
4. When the selection you want
FUNCTION SELECTOR
TUNER
.
to
want to record over) into TAPE 1,
with the side you want to record
on facing you, and the full reel to
the left.
PAUSE
TAPE 1.
PLAY
then
and
RECORD
RECORD
on
both
lock down.
plays on the radio, press
PA U SE
again to start recording.
Note:
Sometimes AM broadcasts
produce a hum or whistling sound
that you hear while playing a
recorded tape. To reduce or eliminate this sound, set
BEAT CUT
on
the back of the system to the position that gives you the be st qua lity
recording.
DUBBING A CASSETTE
TAPE
Follow these steps to d ub (copy) from
one cassette tape to another.
1. Set
FUNCTION SELECTOR
TAPE
.
2. Load the cassette you want to
copy into TAPE 2 with the side
you want to record from facing
you.
3. Load a blank casse tte (or one you
want to record over) into TAPE 1
with the side you want to record
on facing you.
4. Press
TAPE 1.
PAUSE
RECORD
, then
RECORD
and
lock down.
PLAY
5. Press
recording.
on TAPE 2 to begin
PA U SE
on TAPE 1
automatically releases.
Note:
You can listen to the tape
playing in TAPE 2 as you copy it.
MASTER VOLUME
Set
to a comfortable level. The volume setting
does not affect the recording level.
PLAY
to
on
both
18
6. Press
STOP/EJECT
stop recording.
PLAY
release.
7. Press
STOP/EJECT
stop playing the tape.
on TAPE 1 to
RECORD
and
on TAPE 2 to
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MAINTENANCE
Your Optimus Stereo Du al-Cassette Karao ke Cent er is an ex am ple of superior design and craftsmanship. The following suggestions will help you care for the system
so you can enjoy it for years.
Keep the system dry. If it gets wet, wipe it dry imm ediately. Liquids
might contain minerals that can corrode the electronic circuits.
Use and store the system only in normal temperature environments.
Temperature extremes can shorten the life of electronic devices and
distort or melt plastic parts.
Keep the system away from dust and dirt, which can cause premature wear of parts.
Handle the system gently and carefully. Dropping it can dam age c ircuit boards and cases and can cause the system t o work i mproperly.
Wipe the system with a damp cloth occasionally to keep it looking
CLEANER
new. Do not use harsh chemicals, cleaning solvents, or strong detergents to clean the system.
Modifying or tampering with the system’s internal component s can cause a malfunction and might invalidate the system’s warranty, and void your FCC authorization to use it. If your system is not performing as it should, take it to your local
RadioShack store for assistance.
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TAPE CARE TIPS
Preventing Accidental
Erasure
Cassette tapes have two eraseprotection tabs — one for each side.
To protect a recording from bein g accidentally recorded over or erased,
use a screwdriver to remove one or
both of the cassette tape’s erase-protection tabs.
If you want to record on a tape side after you have removed the eraseprotection tab, place a piece of strong
plastic tape over that side’s eraseprotection hole.
Erasing a Cassette Tape
If you no longer want a recording, you
can record over it or erase it.
To erase a previously recorded section of a tape, simply record over it.
To erase the entire cassette tape,
record silence by setting
SELECTOR
no tape in TAPE 2.
You can quickly erase both sides of a
cassette tape using a bulk tape eraser
(such as Cat. No. 44-232), available at
your local RadioShack store.
to
TAPE
and recording with
FUNCTION
Cleaning the Tape-Handling
Parts
Dirt, dust or particles of the tape’s
coating can accumulate on the tape
heads and other parts that the tape
touches. This can greatly reduce the
performance of the cassette player.
Use the following cleaning pro cedure
after every 20 hours of tape player operation.
Notes:
• Be sure you cover only the hole
originally covered by the eraseprotection tab.
• Removing the erase-protection
tabs does not prevent a bulk
eraser from erasing a cassette
tape.
20
1. Disconnect the AC power cord.
2. Open the cassette compartment
doors on TAPE 1 and TAPE 2.
3. Press
PLAY
on TAPE 1 and TAPE
2 to expose the tape-handling
parts.
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4. Use a cotton swab dipped in
denatured alcohol or tape head
cleaning solution to clean the
record/play heads, pinch rollers,
capstans, tape guides, and erase
heads.
TAPE 1
TAPE 2
5. When you finish cleaning, press
STOP/EJECT
TAPE 2 and close the cassette
compartment doors. Then reconnect power.
Your local RadioShack store sells a
full line of cassette deck clea ning su pplies.
on TAPE 1 and
Restoring Tape Tension and
Sound Quality
After you play a cassette tape several
times, the tape might become tightly
wound on the reels. This can cause
playback sound quality to deteriorate.
To restore the sound quality, fastforward the tape from the beginning to
the end of one side, then completely
rewind it. Then loosen the t ape reels
by gently tapping each side of the cassette’s outer shell on a flat surface.
Caution:
the cassette when tapping it. Do not
touch the exposed tape or allow any
sharp objects near the cassette.
Be careful not to damage
THE FCC WANTS YOU
TO KNOW
This music system complies with the
limits for a Class B digital device as
specified in Part 15 of
These limits provide reasonable protection against radio and TV interference in a residential area. However,
your system might cause TV or radio
interference even when it is operating
properly. To eliminate interference,
you can try one or more of the following corrective measures:
• Reorient or relocate the receiving
antenna
• Increase the distance between the
system and the radio or TV
• Use outlets on different electrical
circuits for the system and the
radio or TV
Consult your local RadioShack store if
the problem still exists.
You must use shielded interface cables with this system.
FCC Rules
.
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SPECIFICATIONS
Power Output (at 10% THD) . . ............................................... 20 Watts per Channel
Equalizer .......................................................................................... 120 Hz ±10 dB
300 Hz ±10 dB
1 kHz ±10 dB
3.3 kHz ±10 dB
10 kHz ±10 dB
Track System ............................................................. 4 Track Two Channel Stereo
7
Tape Speed ................................................................................................... 1
Recording System ....................................................................................... AC Bias
Erasing System ................................................................................................... AC
Wow and Flutter (WRMS) ........... ....... ....... .......... .. ....... ....... ..... .... Less Than 0.35%
Record/Play Frequency Response (at ±3 dB) ................................... 125–8000 Hz
Signal-To-Noise .............................................................................................. 40 dB
Speaker ... ............................................................... 10-Inch Woofer/3-Inch Tweeter
/8 ips
(8 Ohms)
Microphone (Monaural) Impedance .......................................................... 600 Ohm
Power Source ...................................................................... AC 120V, 60 Hz, 85 W
1
Dimensions (HWD) ................................................................. 15 × 28 × 9
/2 Inches
(381 × 711 × 242 mm)
Weight ................................................................................................... 38 lb 9.3 oz
(17.5 kg)
Included Accessories ................................ 2 Microphones, Karaoke Cassette Tape
Specifications are typical; individual units m ight vary. Specifications are subj ect to
change and improvement without notice.
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NOTES
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32-11 59 .f m Pag e 24 Mon da y , August 9, 1999 2:38 P M
RadioShack Limited Warranty
This product is warranted against defects for 90 days from date of purchase from
RadioShack co m pany-ow ne d s t ore s an d au thorized R a dio S h ac k f ran chisees and dealers. Within this period, we will repair it without charge for parts and labor. Simply
your Rad ioShack sales slip
ranty does not cover transportation costs. Nor does it cover a product subjected to misuse or accidental damage.
EXCEPT AS PROVIDED HEREIN, RadioShack MAKES NO EXPRESS WARRANTIES
AND ANY IMPLIED WARRANTIES ARE LIMITED IN DURATION TO THE DURATION
OF THE WRITTEN LIMITED WARRANTIES CONTAINED HEREIN. Some states do
not permit limitation or exclusion of implied warranties; therefore, the aforesaid limitation(s) or exclusion(s) may not apply to the purchaser.
This warran ty gives you speci fic legal right s and you may als o have other rig hts which vary from
state to state.
as proof of purchase date to any RadioShack store. War-
We Service What We Sell
bring
10/95
RadioShack
A Division of Tandy Corporation
Fort Worth, Texas 76102
8A6 Printed in Hong Kong
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