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Cat. No. 32-1159
OWNER’S MANUAL
Please read before using this equipment.
Stereo Dual-Cassette
Karaoke Center
with AM/FM Radio
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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.
Warning: To prevent fire or shock
hazard, do not expose this product
to rain or moisture.
CAUTION
Echo Control — lets you add an echo
to your voice for a concert hall effect.
RISK OF ELECTRIC SHOCK.
!
DO NOT OPEN.
Tape Speed Control — adjusts the
tape speed to match your voice pitch.
CAUTION: TO REDUCE THE RISK OF
ELECTRIC SHOCK, DO NOT REMOVE
COVER OR BACK. NO USER-SERVICE-
ABLE PARTS INSIDE. REFER SERVIC-
ING TO QUALIFIED PERSONNEL.
Balance Control — adjusts the bal-
ance between the left and right speak-
ers if you use an external speaker, or
adjusts the balance between the pre-
recorded original singer’s voice and
the music if you use a karaoke tape.
This symbol is intended to alert you
to the presence of uninsulated dan-
gerous voltage within the product’s
enclosure that might be of sufficient
magnitude to constitute a risk of
electric shock. Do not open the
product’s case.
Built-In Speaker — lets you share the
music with friends.
This symbol is intended to inform
you that important operating and
maintenance instructions are in-
cluded in the literature accompany-
ing this product.
External Speaker Jack — lets you
connect the system to an external
speaker for stereo effects.
!
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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
Using the 5 Band Equalizer ................................................................................. 7
Using the Radio .................................................................................................... 8
Using the Cassette Deck ................................................................................... 10
Loading a Cassette Tape ............................................................................... 10
Playing a Cassette Tape ................................................................................ 11
Normal Play ............................................................................................ 11
Consecutive Play .................................................................................... 12
Singing Along ..................................................................................................... 13
Singing with a Cassette Tape ........................................................................ 14
Singing with Another Audio Source ............................................................... 15
Using Optional Components ............................................................................ 16
Listening to Another Audio Source ................................................................ 16
Using Another Audio Component .................................................................. 16
Recording ........................................................................................................... 17
Recording Tips .............................................................................................. 17
Recording Your Voice with Music .................................................................. 17
Recording from the Radio .............................................................................. 18
Dubbing a Cassette Tape .............................................................................. 18
Maintenance ....................................................................................................... 19
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
Specifications ..................................................................................................... 22
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CONNECTIONS
Caution: Do not plug in the power
cord until all other connections are
complete.
CONNECTING AN AUDIO
COMPONENT TO THE
OUTPUT JACKS
You can connect an audio component
(such as a PA system amplifier) to the
system’s AUX OUT L and R jacks. The
AUX OUT L and R jacks let you hear
the system’s sound through the com-
ponent.
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
EXTERNAL SPEAKER
Note: If your audio source does not
have AUX OUT L and R jacks, but has
only a headphone 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 AUX IN L
and R jacks.
You can connect an external 20-watt
stereo speaker with 8-ohm impedance
to the system’s EXT. 8OHM SPEAKER
jack for stereo effect.
5
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CONNECTING POWER
When you have made all connections,
plug your system’s power cord into a
standard AC outlet.
Caution: Your system’s power cord
has a polarized plug (one blade is wid-
er than the other). If you have difficulty
inserting the plug into the outlet, do
not force it. Turn the plug over and try
again.
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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. Slide 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 — Adjusts the frequencies in the low-bass range (bass drums). Reduces
rumble or other low-frequency noise.
300 Hz — Adjusts mid-range low frequencies (organ notes).
1 kHz — Adjusts the range of frequencies where the ear is most sensitive (low vo-
cals).
3.3 kHz — Adjusts mid-range high frequencies (high vocals).
10 kHz — Adjusts high-frequency sounds (cymbals, flutes, and violins).
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USING THE RADIO
Warning: To protect your hearing, set
MASTER VOLUME to MIN before you
play the radio.
3. Set
BAND SELECTOR to AM, FM
STEREO, or FM.
4. Rotate TUNING to select the
1. Press POWER to turn on the sys-
desired station.
tem. The POWER indicator lights.
Notes:
2. Set FUNCTION SELECTOR to
• The AM antenna is built in. For
the best AM reception, adjust
the radio’s position.
TUNER.
• If the BAND SELECTOR is set to
FM STEREO, the FM STEREO
indicator lights when the radio
receives an FM broadcast in
stereo. If the FM reception is
weak, set BAND SELECTOR to
FM to improve it. The sound is
mono, but the reception should
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 cassette tape in either
cassette deck, and record tapes in
TAPE 1.
1. Press STOP/EJECT to open the
cassette compartment.
Warning: To protect your hearing, set
MASTER VOLUME to MIN before you
play a cassette tape.
LOADING A CASSETTE
TAPE
2. Load the cassette tape with its
open edge facing down, the side
you want to play or record on fac-
ing you, and the full reel to the left.
Note: Take up any slack in the tape
by turning the cassette’s hub with a
pencil or your finger. If you do not re-
move excess slack, the tape might be-
come tangled in the record/playback
mechanism. Avoid touching the tape.
3. Close the compartment door.
Follow these steps to load a cassette
tape in TAPE 1 or TAPE 2.
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PLAY
4. Press
on the deck where the
PLAYING A CASSETTE
TAPE
tape is loaded.
You can play a cassette tape in either
TAPE 1 or TAPE 2, or you can load
cassette tapes in both decks and play
them consecutively.
Normal Play
Follow these steps to play a cassette
tape in TAPE 1 or TAPE 2.
MASTER VOLUME
5. Adjust
and the
5 BAND EQUALIZER
controls for
1. Load a cassette tape in TAPE 1 or
TAPE 2.
the desired sound.
BALANCE
6. Adjust
if you con-
POWER
2. Press
to turn on the sys-
nected an external speaker.
tem. The POWER indicator lights.
STOP/EJECT
7. Press
to stop the
STOP/EJECT
tape. Press
again to
FUNCTION SELECTOR
3. Set
TAPE
to
open the cassette compartment.
Then remove the cassette tape.
.
PLAY
Turn the tape over and press
play the other side.
to
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Notes:
Consecutive Play
• To temporarily stop play, press
Follow these steps to play one side of
the tape in TAPE 2, then play one side
of the tape in TAPE 1.
PAUSE
PAUSE
again to
. Press
resume play.
1. Follow Steps 1–3 under “Normal
Play” on Page 11, loading tapes in
both TAPE 1 and TAPE 2.
PLAY
2. Press
on TAPE 2.
PAUSE PLAY
on TAPE
3. Press
1.
then
The tape in TAPE 2 plays to the side’s
end. Then the tape in TAPE 1 plays to
its side’s end.
• To rapidly wind the tape forward or
FAST-F
STOP/EJECT
backward, press
REWIND
or
.
Press
when you reach the desired sec-
tion.
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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 /4-inch plug
into one of the microphone jacks.
AUTO VOICE CONTROL — While you
play a karaoke cassette tape, rotate
AUTO VOICE CONTROL to replace the
prerecorded voice with your voice. If
you have a high voice, turn AUTO
VOICE CONTROL towards LOW. If you
have a low voice, turn AUTO VOICE
CONTROL towards HIGH.
1
Note: Your friends can also sing along
with the music if you connect a unidi-
rectional 600-ohm dynamic micro-
phone with a 1/4-inch plug to the
system’s other microphone jack. Your
local RadioShack store sells a wide
variety of microphones.
ECHO — This adds an echo effect to
your voice while you sing. rotate ECHO
between LOW and HIGH for the de-
sired effect.
Next, you can use these four controls
to get the sound just right.
TAPE SPEED — While you play a tape,
rotate TAPE SPEED towards LOW to
slow down the tape or towards HIGH
to speed it up.
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BALANCE
—
While you play
a
3. Set FUNCTION SELECTOR to
karaoke cassette tape, turn BALANCE
to adjust the balance between the pre-
recorded 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.
TAPE.
4. Press PLAY to play the tape.
5. Adjust MASTER VOLUME and the
5 BAND EQUALIZER controls to
the desired sound.
6. Set the microphone’s ON/OFF
switch to ON. Sing directly into the
microphone along with the music.
SINGING WITH A
CASSETTE TAPE
7. Use MIC 1 VOLUME or MIC 2 VOL-
UME to adjust the volume of each
microphone.
Follow these steps to sing along with a
regular or karaoke cassette tape (such
as the one supplied).
1. Press POWER to turn on the sys-
tem. The POWER indicator lights.
8. Adjust ECHO to add an echo to
your voice.
9. Adjust TAPE SPEED.
10. If you are using a karaoke cas-
sette tape, adjust BALANCE and
AUTO VOICE CONTROL for the
desired effect.
2. Load a prerecorded tape in TAPE
1 or TAPE 2.
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SINGING WITH
ANOTHER AUDIO
SOURCE
If you connected another audio source
(see “Connecting Another Audio
Source to the Input Jacks” on Page 5),
follow these steps to sing along with
that audio source.
FUNCTION SELECTOR
AUX
.
1. Set
to
POWER
2. Press
to turn on the sys-
tem. The POWER indicator lights.
3. Turn on the audio source.
MASTER VOLUME
4. Adjust
and the
5 BAND EQUALIZER
controls for
the desired sound.
ON/OFF
5. Set the microphone’s
ON
switch to
. Sing directly into the
microphone along with the music.
MIC 1 VOLUME
MIC 2 VOL-
Use
or
UME
ume.
to adjust your voice’s vol-
POWER
6. When you finish, press
to
turn off the system, turn off the
audio source, and set the micro-
ON/OFF
OFF
.
phone’s
switch to
The POWER indicator turns off.
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USING OPTIONAL COMPONENTS
LISTENING TO
ANOTHER AUDIO
SOURCE
USING ANOTHER AUDIO
COMPONENT
If you connected an audio component
(see “Connecting an Audio Compo-
nent to the Output Jacks” on Page 5),
follow these steps to listen to the sys-
tem’s sound through that component.
If you connected another audio source
(see “Connecting Another Audio
Source to the Input Jacks” on Page 5),
follow these steps to listen to that
source.
Warning: To protect your hearing and
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.
Warning: To protect your hearing and
prevent damage to the system, always
set the source’s and the system’s vol-
ume controls to their lowest settings
before turning on the source and the
system.
1. Set the FUNCTION SELECTOR to
AUX.
1. Set FUNCTION SELECTOR to AUX.
2. Press POWER to turn on the sys-
2. Press POWER to turn on the sys-
tem. The POWER indicator lights.
tem. The POWER indicator lights.
3. Turn on the audio component.
3. Turn on the audio source.
4. Sing through the microphone (see
“Singing Along” on Page 13).
4. Adjust the system’s MASTER VOL-
UME and the 5 BAND EQUALIZER
controls for the desired sound.
5. When you finish listening, turn off
the audio component. Then press
POWER to turn off the system. The
POWER indicator turns off.
5. To turn off the system, press
POWER. The POWER indicator
turns off. Then turn off the audio
source.
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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 au-
dio source, or dub from one cassette
tape to another.
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
RECORDING TIPS
Another
Page 15.
Audio
Source”
on
• Tape quality greatly affects the
quality of the recording. We rec-
ommend RadioShack Supertape
Extended Range or Low-Noise
Type 1 tape. We do not recom-
mend long-play cassette tapes,
such as C-120s, because they are
thin and can easily tangle in the
cassette mechanism. For low-
noise, wide-range recordings, use
normal-bias tape.
3. Press RECORD on TAPE 1 to
begin recording. RECORD and
PLAY both lock down.
• Before recording, be sure the tape
you are using has its erase-
protection tabs in place. See “Pre-
venting Accidental Erasure” on
Page 20.
PAUSE on TAPE 1 to
temporarily stop recording. Press
PAUSE again to resume recording.
Note: Press
• Recording automatically stops
when the tape in TAPE 1 reaches
the end. To record on the other
side, turn over the tape.
4. Press STOP/EJECT on TAPE 1 to
stop recording. RECORD and
PLAY release.
5. Press STOP/EJECT on TAPE 2 or
stop the audio source.
RECORDING YOUR
VOICE WITH MUSIC
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
DUBBING A CASSETTE
TAPE
FUNCTION SELECTOR
TUNER
1. Set
to
Follow these steps to dub (copy) from
one cassette tape to another.
.
FUNCTION SELECTOR
2. 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.
1. Set
TAPE
to
.
2. Load the cassette you want to
copy into TAPE 2 with the side
you want to record from facing
you.
PAUSE
PLAY
RECORD
on
RECORD
both
3. Press
TAPE 1.
lock down.
then
and
3. Load a blank cassette (or one you
want to record over) into TAPE 1
with the side you want to record
on facing you.
4. When the selection you want
PAUSE
plays on the radio, press
again to start recording.
PAUSE
RECORD
on
4. Press
TAPE 1.
lock down.
, then
RECORD
PLAY
Note: Sometimes AM broadcasts
produce a hum or whistling sound
that you hear while playing a
recorded tape. To reduce or elimi-
and
both
PLAY
5. Press
on TAPE 2 to begin
PAUSE
recording.
on TAPE 1
BEAT CUT
nate this sound, set
on
automatically releases.
the back of the system to the posi-
tion that gives you the best quality
recording.
Note: You can listen to the tape
playing in TAPE 2 as you copy it.
MASTER VOLUME
Set
to a com-
fortable level. The volume setting
does not affect the recording level.
STOP/EJECT
6. Press
on TAPE 1 to
RECORD
stop recording.
and
PLAY
release.
STOP/EJECT
7. Press
on TAPE 2 to
stop playing the tape.
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MAINTENANCE
Your Optimus Stereo Dual-Cassette Karaoke Center is an example of superior de-
sign 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 immediately. 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 prema-
ture wear of parts.
Handle the system gently and carefully. Dropping it can damage cir-
cuit boards and cases and can cause the system to work improperly.
Wipe the system with a damp cloth occasionally to keep it looking
CLEANER
new. Do not use harsh chemicals, cleaning solvents, or strong deter-
gents to clean the system.
Modifying or tampering with the system’s internal components can cause a mal-
function and might invalidate the system’s warranty, and void your FCC authoriza-
tion 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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Erasing a Cassette Tape
TAPE CARE TIPS
If you no longer want a recording, you
can record over it or erase it.
Preventing Accidental
Erasure
To erase a previously recorded sec-
tion of a tape, simply record over it.
Cassette tapes have two erase-
protection tabs — one for each side.
To protect a recording from being ac-
cidentally recorded over or erased,
use a screwdriver to remove one or
both of the cassette tape’s erase-pro-
tection tabs.
To erase the entire cassette tape,
FUNCTION
record silence by setting
SELECTOR
TAPE
and recording with
to
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.
Cleaning the Tape-Handling
Parts
If you want to record on a tape side af-
ter you have removed the erase-
protection tab, place a piece of strong
plastic tape over that side’s erase-
protection hole.
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 procedure
after every 20 hours of tape player op-
eration.
1. Disconnect the AC power cord.
2. Open the cassette compartment
doors on TAPE 1 and TAPE 2.
Notes:
PLAY
3. Press
on TAPE 1 and TAPE
• Be sure you cover only the hole
originally covered by the erase-
protection tab.
2 to expose the tape-handling
parts.
• Removing the erase-protection
tabs does not prevent a bulk
eraser from erasing a cassette
tape.
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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.
To restore the sound quality, fast-
forward the tape from the beginning to
the end of one side, then completely
rewind it. Then loosen the tape reels
by gently tapping each side of the cas-
sette’s outer shell on a flat surface.
TAPE 1
Be careful not to damage
Caution:
the cassette when tapping it. Do not
touch the exposed tape or allow any
sharp objects near the cassette.
THE FCC WANTS YOU
TO KNOW
TAPE 2
This music system complies with the
limits for a Class B digital device as
specified in Part 15 of FCC Rules.
These limits provide reasonable pro-
tection against radio and TV interfer-
ence 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 follow-
ing corrective measures:
5. When you finish cleaning, press
STOP/EJECT on TAPE 1 and
TAPE 2 and close the cassette
compartment doors. Then recon-
nect power.
• Reorient or relocate the receiving
antenna
Your local RadioShack store sells a
full line of cassette deck cleaning sup-
plies.
• 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
Restoring Tape Tension and
Sound Quality
Consult your local RadioShack store if
the problem still exists.
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.
You must use shielded interface ca-
bles with this system.
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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
Tape Speed ................................................................................................... 17/8 ips
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 Ohms)
Microphone (Monaural) Impedance .......................................................... 600 Ohm
Power Source ...................................................................... AC 120V, 60 Hz, 85 W
Dimensions (HWD) ................................................................. 15 × 28 × 91/2 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 might vary. Specifications are subject to
change and improvement without notice.
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NOTES
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RadioShack Limited Warranty
This product is warranted against defects for 90 days from date of purchase from
RadioShack company-owned stores and authorized RadioShack franchisees and deal-
ers. Within this period, we will repair it without charge for parts and labor. Simply bring
your RadioShack sales slip as proof of purchase date to any RadioShack store. War-
ranty does not cover transportation costs. Nor does it cover a product subjected to mis-
use 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 limita-
tion(s) or exclusion(s) may not apply to the purchaser.
This warranty gives you specific legal rights and you may also have other rights which vary from
state to state.
We Service What We Sell
10/95
RadioShack
A Division of Tandy Corporation
Fort Worth, Texas 76102
8A6
Printed in Hong Kong
|