Optimus Karaoke Machine CDG User Manual

32-1166.fm Page 1 Wednesday, November 17, 1999 4:51 PM  
Cat. No. 32-1166  
OWNER’S MANUAL  
Please read before using this equipment.  
CDG Karaoke System  
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FEATURES  
Your Optimus CDG Karaoke System is  
one of the most versatile karaoke sys-  
tems available. It lets you be the “star”  
as you sing along with your favorite re-  
cordings on a CD, a CDG (a compact  
disc with a graphic track), a cassette  
tape, or a video tape, and hear your  
voice with the music through the power-  
ful built-in speaker.  
Your karaoke system’s features include:  
Front Loading CD/CDG Player — lets  
you play regular or karaoke CDs, or spe-  
cial CDGs so you can experience digital  
images — the latest in karaoke fun!  
Plus, the player’s 16 bit D/A converter  
(digital-to-analog conversion circuitry  
which accurately reproduces all sound  
levels with virtually no distortion) and 8  
times oversampling produce high quality  
sound.  
The karaoke system’s CDG capability is  
the latest advancement in karaoke tech-  
nology. It lets you connect the karaoke  
system to a TV or monitor and read the  
lyrics of your favorite tunes as they scroll  
by in front of a still video graphic, such  
as a picture or drawing related to the  
music.  
Dual-Cassette Decks — let you play  
two cassette tapes in a row, dub from  
one tape to another, or sing with one  
tape while recording on the other.  
8-Watt Per Channel Amp— lets you  
singalong and listen through the  
karaoke system’s 5-inch woofer and 2-  
inch tweeter.  
You can sing along without video graph-  
ics using special karaoke audio cassette  
tapes (such as the one we have includ-  
ed to get you started) that let you bal-  
ance the volume of the original singer’s  
voice and the music tracks. Or, you can  
sing along with a regular prerecorded  
cassette tape or CD (not supplied).  
Adjustable Echo Control — lets you  
add an echo to the sound for a concert  
hall effect.  
Tape Speed Control — lets you adjust  
the tape speed to match your voice  
pitch.  
You can also connect another audio  
source to the karaoke system, such as a  
stereo VCR, and play a karaoke video  
cassette (not supplied).  
Supplied Karaoke CDG and Audio  
Tapeletsyousingalongwiththemusic  
and adjust the volume of the prerecorded  
voice and music.  
Note: Additional karaoke CDs, audio  
cassettes, and video cassettes are  
available by special order through your  
local RadioShack store.  
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Audio Channel — lets you choose be-  
tween singing along to the music with or  
without the original singer’s voice or with  
a stereo effect.  
Intro Scan — lets you play the first 10  
seconds of each track on a CD/CDG to  
help you locate a certain track.  
Repeat Play — repeats a single track or  
Vocal Changer — lets you change the  
volume of the original singer’s prere-  
corded voice with your voice when you  
use a karaoke tape, so you can sing so-  
lo.  
a programmed sequence of tracks.  
Random Play — lets you play all the  
tracks in random order.  
Headphones Jack — lets you connect  
headphones to your karaoke for private  
listening.  
Auto-Stop — automatically stops when  
it reaches the end of a cassette tape, to  
protect the tape and tape-handling  
parts.  
Dual Microphone Jacks — let you use  
the supplied microphone and an option-  
al microphone simultaneously to sing  
duets or for lead and background vo-  
cals.  
20-Track Programmable Memory —  
lets you pace your own performance by  
programming up to 20 CD tracks in the  
order you want to hear them.  
Recording — lets you record your voice  
as you sing along with a tape or CD/  
CDG or an external audio source con-  
nected to the system.  
8-Watt External Speaker Jack — so  
you can connect an external speaker for  
stereo effects.  
Auxiliary Input Jacks — so you can  
connect to another audio source, such  
as a stereo VCR or another CD player.  
Tone Control — lets you customize the  
sound you hear through the speaker.  
Auxiliary Output Jacks — for connect-  
ing another audio component, such as  
an equalizer/booster or a PA system.  
Automatic Search — lets you quickly  
locate and play any track on the loaded  
CD/CDG.  
Audible Search — lets you quickly lo-  
cate a particular section of track while it  
is playing a CD.  
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CONTENTS  
Connections ......................................................................................................... 7  
Connecting Microphones ................................................................................. 7  
Connecting Other Audio Components ............................................................. 8  
Connecting an External Audio Source for Input ........................................ 8  
Connecting an External Audio Component for Output .............................. 8  
Connecting an External Speaker .............................................................. 8  
Connecting to a TV .......................................................................................... 9  
Connecting Power ........................................................................................... 9  
Singing Along/Quick Start ................................................................................ 10  
Singing with a CD/CDG or a Cassette Tape .................................................. 10  
With Another Audio Source ........................................................................... 11  
Through Another Audio Component .............................................................. 11  
System Operation .............................................................................................. 12  
Adjusting the Sound ...................................................................................... 12  
Using Headphones ........................................................................................ 12  
Listening Safely ............................................................................................. 12  
CD/CDG Player Operation ................................................................................. 13  
Playing a CD/CDG ........................................................................................ 13  
Special CD/CDG Player Features ................................................................. 13  
Automatic Search .................................................................................... 13  
Audible Search ........................................................................................ 14  
Intro Scan ............................................................................................... 14  
Repeat Play ............................................................................................ 14  
Random Play .......................................................................................... 14  
Programmed Play .......................................................................................... 15  
Programming and Playing a Sequence of Tracks ................................... 15  
Reviewing/Replacing a Programmed Sequence ..................................... 16  
Erasing a Programmed Sequence .......................................................... 16  
CD/CDG Care Tips ........................................................................................ 16  
Cassette Deck Operation .................................................................................. 17  
Loading a Tape .............................................................................................. 17  
Playing a Tape ............................................................................................... 17  
Normal Play ............................................................................................ 17  
Consecutive Play .................................................................................... 18  
Tape Care Tips .............................................................................................. 19  
Preventing Accidental Erasure ................................................................ 19  
Erasing a Cassette Tape ......................................................................... 19  
Cleaning the Tape-Handling Parts .......................................................... 19  
Restoring Tape Tension and Sound Quality ............................................ 20  
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Using Optional Components ............................................................................ 21  
Listening to Another Audio Source ................................................................ 21  
Listening Through Another Audio Component .............................................. 21  
Recording A Cassette Tape ............................................................................... 22  
Recording Your Voice with Music ................................................................... 22  
Dubbing a Cassette Tape .............................................................................. 23  
Troubleshooting ................................................................................................. 24  
Care and Maintenance ....................................................................................... 25  
The FCC Wants You to Know ........................................................................ 26  
Specifications ........................................................................................................ 27  
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CONNECTIONS  
Caution: To avoid electrical shock, do  
not connect the system to AC power un-  
til all other connections are complete.  
If you are connecting only one micro-  
phone, plug it into MIC 1. If you are add-  
ing a second microphone, plug it into  
MIC 2.  
CONNECTING  
MICROPHONES  
The system has two microphone jacks  
so you can use the supplied microphone  
to sing along to your favorite recordings,  
and connect an additional microphone  
(not supplied) for duets or lead and  
background vocals.  
For the best performance, the additional  
microphone should be a unidirectional  
600-ohm dynamic microphone with a 1/4-  
inch (6.35-mm) plug and an ON/OFF  
switch. Your local RadioShack store has  
a wide selection of microphones.  
The system has a built-in microphone  
holder on the right side of the system.  
To use the holder, pull it down from the  
side of the system, and place the micro-  
phone in the holder’s grip.  
Before you connect a microphone, al-  
ways turn MIC VOL 1 to MIN on MIC 1,  
(and MIC VOL 2 if you are connecting an  
additional microphone).  
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Note: If your audio source does not  
have AUX OUT R and L jacks, but has  
only a headphone or line out 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 or line  
out jack, and connect the other end’s  
two phono plugs to the system’s AUX IN  
R and L jacks.  
CONNECTING OTHER  
AUDIO COMPONENTS  
You can connect an external audio  
source or component to the karaoke  
system, so you can sing along with other  
audio formats or videos, or hear the  
karaoke’s sound from another speaker  
or a PA system. To make the connec-  
tion, you need optional audio patch ca-  
bles (such as Cat. No. 42-2352).  
Connecting an External Audio  
Component for Output  
Connecting an External Audio  
Source for Input  
You can broadcast the karaoke sys-  
tem’s sound through an external audio  
component such as a PA system ampli-  
fier. Connect the external audio compo-  
nent’s audio input jacks to the karaoke  
system’s AUX OUT R and L jacks.  
You can connect another audio source,  
such as a stereo VCR or another 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 R and L jacks.  
Connecting an External  
Speaker  
You can connect an external 8 to15-watt  
stereo speaker with 4-8 ohm impedance  
to the system for a stereo effect. Plug  
the speaker’s phono plug into 4-8 OHM  
SPEAKER / RIGHT CHANNEL on the sys-  
tem.  
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CONNECTING TO A TV  
CONNECTING POWER  
You can connect the CD/CDG karaoke  
system to a TV or monitor and see the  
words and images produced by a spe-  
cial karaoke video cassette or CD/CDG.  
Plug one end of the supplied cable into  
VIDEO OUT and the other end into your  
TV’s video in jack.  
When you have made all other connec-  
tions, plug your system’s power cord  
into a standard AC outlet.  
Caution: The supplied power cord has a  
polarized plug that fits into the outlet  
only one way. If the plug does not fit  
properly, turn it over and try again. Do  
not force it.  
Note: For TVs that do not have an au-  
dio/video input jack, use a video RF  
modulator (such as Cat. No. 15-1283).  
Connect the RF modulator to VIDEO  
OUT and to the TV’s 75-Ohm VHF input  
terminal, following the instructions in the  
modulator’s owner’s manual.  
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SINGING ALONG/QUICK START  
The instructions in this section provide a  
quick reference to help you get started  
singing along with your karaoke CD/  
CDG system.  
To sing along with a pre-recorded  
tape, press STOP/EJECT on  
TAPE 1 or TAPE 2 and load a cas-  
sette. Shut the compartment door to  
close it.  
3. Set FUNCTION SELECTOR to CD/  
SINGING WITH A CD/CDG  
OR A CASSETTE TAPE  
CDG or TAPE.  
4. Set AUDIO CHANNEL and VOCAL  
CHANGER for the desired effects.  
Set AUDIO CHANNEL to NORMAL to  
enjoy a stereo effect with the music.  
Set AUDIO CHANNEL to MUSIC to  
enjoy the music without the original  
singer's voice, so you can sing  
alone.  
Set AUDIO CHANNEL to VOCAL to  
enjoy both the original singer's voice  
and music. You can sing along with  
the original singer's voice and  
music.  
Set VOCAL CHANGER to OFF to  
enjoy both the music and original  
singer's voice.  
Set VOCAL CHANGER to ON to enjoy  
both the music and original singer's  
voice. Whenever you sing along, the  
original singer's voice is cancelled. If  
you stop singing, the original  
singer's voice returns.  
Follow these steps to sing along with a  
CD/CDG or a cassette tape (such as  
those supplied).  
Note: With a regular (non-karaoke)  
prerecorded cassette tape, you can-  
not adjust the volume of the prere-  
corded original singer's voice in  
relation to the music.  
1. Press POWER to turn on the system.  
The POWER indicator lights.  
2. To sing along with a CD/CDG, press  
OPEN/CLOSE to open the CD com-  
partment and load a CD/CDG.  
Press OPEN/CLOSE again to close  
the CD compartment.  
5. Press PLAY/PAUSE, or PLAY  
on  
the tape deck you are using, to start  
play.  
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6. Adjust the sound with MASTER VOL-  
UME. See “Adjusting the Sound” on  
Page 12.  
WITH ANOTHER AUDIO  
SOURCE  
7. Set each connected microphone’s  
ON/OFF switch to ON. Sing directly  
into the microphone along with the  
music.  
If you connect another audio source, fol-  
low these steps to sing along with that  
audio source.  
1. Set FUNCTION SELECTOR to AUX.  
8. Use MIC VOL 1 and/or MIC VOL 2 to  
adjust the volume of each micro-  
phone.  
2. Press POWER to turn on the system.  
The POWER indicator lights.  
3. Turn on the audio source.  
9. Adjust ECHO and TONE CONTROL  
for the desired reverberation and  
pitch. See “Adjusting the Sound” on  
Page 12.  
4. Adjust the sound with the controls  
explained in “Adjusting the Sound”  
on Page 12.  
10. Adjust TAPE SPEED (if you are play-  
ing a tape). See “Adjusting the  
Sound” on Page 12.  
5. Set each connected microphone’s  
ON/OFF switch to ON. Sing directly  
into the microphone along with the  
music.  
11. To stop a tape, press STOP/EJECT  
on the deck you are using.  
6. Use MIC VOL 1 and/or MIC VOL 2 to  
Press STOP/EJECT  
again to  
adjust your voice’s volume.  
open the cassette compartment  
door and remove the tape.  
7. When you finish, set each micro-  
phone’s ON/OFF switch to OFF,  
press POWER to turn off the system,  
then turn off the audio source.  
12. Set each microphone’s ON/OFF  
switch to OFF, then press POWER to  
turn off the system. The POWER  
indicator turns off.  
THROUGH ANOTHER  
AUDIO COMPONENT  
If you connected another audio compo-  
nent, follow the steps in “With Another  
Audio Source” so you can hear your  
voice and music through another com-  
ponent. Except in Step 3, turn on the au-  
dio component, and be sure to turn it off  
(Step 7) when you finish.  
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SYSTEM OPERATION  
ADJUSTING THE SOUND  
USING HEADPHONES  
Use these controls to get the system’s  
sound just right.  
You can use headphones (not supplied)  
to listen in privacy. Insert the head-  
phones' /8-inch plug into the PHONES  
1
MASTER VOLUME — Control the vol-  
ume of the system’s speaker by turning  
MASTER VOLUME toward MIN or MAX.  
The volume remains set until you read-  
just it.  
jack.  
Note: Connecting headphones automat-  
ically disconnects the speakers.  
Your local Radioshack store sells a wide  
selection of headphones.  
TAPE SPEED — To slow down or  
speed up the pace of the music as you  
sing along, turn TAPE SPEED toward  
LOW or HIGH. For normal tape speed,  
leave it set to the middle position.  
LISTENING SAFELY  
To protect your hearing, follow these  
guidelines when you use headphones.  
ECHO — You can adjust ECHO to add  
an echo effect to your voice while you  
sing. Turn and hold ECHO toward LOW  
or HIGH for the desired effect and re-  
lease.  
• Set the volume to the lowest setting  
before you begin listening. After you  
begin listening, adjust the volume to  
a comfortable level.  
• Do not listen at extremely high vol-  
ume levels. Extended high-volume  
listening can lead to permanent  
hearing loss.  
TONE CONTROL — You can use TONE  
CONTROL to customize the sound you  
hear through the speaker. Turn TONE  
CONTROL toward LOW for a low and  
deep sound or HIGH for a high and  
sharp sound.  
• Once you set the volume, do not  
increase it. Over time, your ears  
adapt to the volume level, so a vol-  
ume level that does not cause dis-  
comfort might still damage your  
hearing.  
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CD/CDG PLAYER OPERATION  
• During playback, if the system is  
PLAYING A CD/CDG  
subjected to a sudden shock or jolt,  
the speed of rotation might change,  
or some noise might be produced.  
This is not a malfunction.  
1. Press POWER to turn on the system.  
The POWER indicator lights.  
2. Set FUNCTION SELECTOR to CD/  
CDG.  
3. Press OPEN/CLOSE to open the CD/  
SPECIAL CD/CDG  
PLAYER FEATURES  
CDG compartment.  
4. Place a CD/CDG in the compart-  
ment tray label side up.  
Automatic Search  
5. Press OPEN/CLOSE again to close  
the CD/CDG compartment. You see  
the CD/CDG’s total number of tracks  
and total playing time.  
The automatic search feature lets you  
quickly locate the beginning of any track  
on a CD/CDG, including the track cur-  
rently playing. You can use automatic  
search when a CD/CDG is playing or  
stopped.  
6. Press PLAY/PAUSE. The CD/CDG  
begins to play from Track 1 and the  
track’s elapsed play time appears.  
If a CD/CDG is playing:  
7. Adjust the sound with the controls  
explained in “Adjusting the Sound”  
on Page 12.  
To skip back to the beginning of the  
current track, press SEARCH/SKIP  
(
l
) once.  
Note: To sing along, see “Singing  
Along/Quick Start” on Page 10.  
To search backward to the begin-  
ning of the desired track, repeatedly  
8. The system automatically stops play  
at the end of the CD/CDG’s last  
track. To stop it sooner press STOP.  
The CD/CDG’s total number of  
tracks and playing time appear.  
press SEARCH/SKIP (  
).  
l
To search forward to the beginning  
of the desired track, repeatedly  
press SEARCH/SKIP (  
).  
l
Notes:  
If the CD/CDG is stopped or paused, re-  
peatedly press SEARCH/SKIP ( ) or  
) until the system displays the  
number of the track you want to play,  
then press PLAY/PAUSE. The CD/CDG  
player starts playing the selected track.  
l
To temporarily stop play, press  
PLAY/PAUSE. The track number  
appears and the elapsed time stops  
and flashes. To resume play, press  
PLAY/PAUSE again.  
(
l
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32-1166.fm Page 14 Wednesday, November 17, 1999 4:51 PM  
To continuously repeat a single track,  
press REPEAT once while the desired  
track is playing. REPEAT1appears.  
Audible Search  
Note: Audible search does not work on  
CDGs.  
To continuously repeat all tracks on the  
Hold down SEARCH/SKIP  
(
l
) or  
CD/CDG, repeatedly press REPEAT until  
(
) to search rapidly forward or back- REPEATALLappears.  
l
ward during play. The CD plays rapidly,  
and you hear the sound at a high speed  
and low volume.  
To repeat a programmed sequence, re-  
peatedly press REPEAT until REPEAT  
ALL appears with MEMORY on the dis-  
play.  
Release the button to resume normal  
play.  
To cancel repeat play during or after  
play, repeatedly press REPEAT until RE-  
PEAT disappears. If you cancel repeat  
play during play, the CD/CDG player re-  
sumes normal play.  
Intro Scan  
You can set the system to play the first  
10 seconds of each track on the CD/  
CDG so you can quickly find the one you  
want.  
Random Play  
To begin scanning, press INTRO. IN-  
TROappears on the display and the CD/  
CDG player plays the first 10 seconds of  
each track, beginning with the first track,  
then stops.  
You can use the system to play all  
tracks on a loaded CD/CDG in a random  
order.  
1. To set random play while a CD is  
stopped or in play, press RANDOM.  
RANDOM and the first randomly  
selected track number appear on  
the display.  
You can also use repeat play and  
search during intro play.  
To cancel intro play during or after play,  
press INTRO. If you cancel INTRO scan  
during play, the CD/CDG player begins  
normal play.  
2. Press PLAY/PAUSE,  
briefly  
flashes.  
3. The track begins to play, and the  
system plays all the tracks in ran-  
dom order.  
Repeat Play  
4. When the system reaches the end  
of the last track in the random order,  
it automatically stops.  
You can repeat a single track, all the  
tracks on a CD/CDG, or an entire pro-  
grammed sequence. See “Programmed  
Play” on Page 15.  
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Notes:  
Note: MEMORY remains on the top  
left corner of the display until you  
erase the programmed sequence.  
To replay the current track, press  
SEARCH/SKIP (  
).  
To play the next random track, press  
SEARCH/SKIP ( ).  
l
3. Press SEARCH/SKIP (  
) or (  
)
l
l
to select the desired track.  
l
4. Press MEMORY to store the selected  
track. The cumulative time from the  
programmed tracks appears, while  
MEMORYand the track number con-  
tinue to flash.  
To stop the CD player at any time during  
random play, press STOP. The CD/  
CDG’s total number of tracks and play-  
ing time appear. When you press PLAY/  
PAUSE again, random play resumes.  
Note: If you enter the wrong track  
number, you can erase the  
sequence and start over. See “Eras-  
ing a Programmed Sequence” on  
Page 16.  
To cancel random play and resume nor-  
mal play, press RANDOM again. RAN-  
DOMdisappears and the CD/CDG player  
resumes normal play.  
5. Repeat Steps 3 and 4 to program up  
to 20 tracks.  
PROGRAMMED PLAY  
Note: You cannot store more than  
20 tracks. If you try to store a 21st  
track, the system replaces the first  
track stored, and the total number of  
tracks and the total play time appear  
on the display. Also, any additional  
tracks you try to store will replace  
the next successive track.  
You can program the CD/CDG player  
during normal or karaoke mode to play  
up to 20 tracks in any order you choose,  
and you can program the same track to  
play more than once.  
Programming and Playing a  
Sequence of Tracks  
6. Press PLAY/PAUSE to play the pro-  
grammed tracks. The first track  
number appears on the display with  
the elapsed time of the track in play.  
1. Repeatedly press STOP until the  
system displays the total number of  
tracks and the total playing time.  
2. Press MEMORY.  
MEMORY flashes at the top of the  
display along with the track number.  
The program number also appears.  
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Notes:  
• Set FUNCTION SELECTOR to TAPE  
and then back to CD.  
You cannot use random play to  
play a programmed sequence.  
You can repeat or search through  
programmed tracks. To repeat the  
CD/CDG CARE TIPS  
programmed  
“Repeat Play” on Page 14.  
sequence,  
see  
Although a CD/CDG is very durable, you  
should handle it with care. We recom-  
mend the following precautions:  
7. Programmed play automatically  
stops at the end of the last pro-  
grammed track. To stop the CD/  
CDG player at any time during pro-  
grammed play, press STOP. The CD/  
CDG’s total number of tracks and  
playing time appear.  
• Keep the CD/CDG in its protective  
case or sleeve when you are not  
playing it.  
• Keep the CD/CDG clean. Your local  
RadioShack store sells a suitable  
CD cleaner kit.  
• Do not write on either side of the  
CD/CDG, particularly the non-label  
side.  
Reviewing/Replacing a  
Programmed Sequence  
• Do not store CD/CDGs in high-tem-  
perature, high-humidity locations.  
They might warp.  
While play is stopped, repeatedly press  
MEMORY to review the programmed se-  
quence.  
• Keep CD/CDGs dry. A water drop  
can act as a lens and affect the laser  
beam’s focus.  
To replace a programmed track, press  
MEMORY until the position number of the  
track you want to replace appears. Then  
repeat Steps 3 and 4 to select and store  
the new track.  
• Always handle a CD/CDG by the  
edges to avoid fingerprints. Finger-  
prints and scratches on the CD/  
CDG’s surface can prevent the laser  
beam from correctly reading the dig-  
ital information.  
Erasing a Programmed  
Sequence  
• If a CD/CDG skips during play, it  
might be scratched. Your local  
RadioShack store sells a Scratch’n  
Fix kit (Cat. No. 42-127) that might  
stop the skip. Also, see “Trouble-  
shooting” on Page 24.  
You can do any of the following to erase  
a programmed sequence:  
• Press STOP and MEMORY at the  
same time when the CD/CDG player  
stops.  
• Press OPEN/CLOSE before or after  
programmed play.  
16  
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32-1166.fm Page 17 Wednesday, November 17, 1999 4:51 PM  
CASSETTE DECK OPERATION  
You can play a cassette tape in either  
cassette deck, and you can record tapes  
in TAPE 1.  
PLAYING A TAPE  
You can play a cassette tape in either  
TAPE 1 or TAPE 2, or you can load cas-  
sette tapes in both decks and play one  
side of each consecutively.  
LOADING A TAPE  
1. Take up any slack in the tape 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/play-  
back mechanism. Avoid touching  
the tape.  
Warning: To protect your hearing, set  
MASTER VOLUME to MIN before you play  
a cassette tape.  
Normal Play  
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 system.  
The POWER indicator lights.  
2. Press STOP/EJECT  
to open  
3. Set FUNCTION SELECTOR to TAPE.  
the cassette compartment.  
4. Press PLAY  
on the deck where  
3. Load the cassette tape with its open  
edge facing down, the side you want  
to play or record on facing out, and  
the full reel to the left.  
the tape is loaded.  
5. Adjust the sound with the controls  
explained in “Adjusting the Sound”  
on Page 12.  
4. Close the compartment door.  
6. Press STOP/EJECT  
to stop the  
tape. Press STOP/EJECT  
again to open the cassette compart-  
ment, then remove the cassette  
tape.  
17  
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32-1166.fm Page 18 Wednesday, November 17, 1999 4:51 PM  
Turn the tape over and press PLAY  
to  
play the other side.  
Notes:  
To temporarily stop play, press  
PAUSE . Press PAUSE again to  
resume play.  
To rapidly wind the tape forward or  
backward, press FAST-F or  
REWIND . Press STOP/EJECT  
when you reach the desired  
section.  
Consecutive Play  
Follow these steps to play one side of a  
tape loaded in TAPE 2, then play one  
side of tape loaded in TAPE 1.  
1. Load a cassette tape in TAPE 1 and  
TAPE 2.  
2. Press POWER to turn on the system.  
The POWER indicator lights.  
3. Set FUNCTION SELECTOR to TAPE.  
4. Press PLAY  
on TAPE 2.  
5. Press PAUSE  
then PLAY  
on  
TAPE 1.  
The tape in TAPE 2 plays to the side’s  
end. Then PAUSE releases on TAPE 1  
and it plays to its side’s end.  
18  
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32-1166.fm Page 19 Wednesday, November 17, 1999 4:51 PM  
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  
Most cassette tapes have two erase-  
protection tabs — one for each side. To  
protect a recording from accidentally be-  
ing recorded over or erased, use a  
screwdriver to remove one or both of the  
cassette tape’s erase-protection tabs.  
To erase a previously recorded section  
of a tape, simply record over it.  
To erase the entire cassette tape, record  
silence by setting FUNCTION SELECTOR  
to TAPE and recording with 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.  
If you want to record on a tape side after  
you have removed the erase-protection  
tab, place a piece of strong plastic tape  
over that side’s erase-protection hole.  
Cleaning the Tape-Handling  
Parts  
Dirt, dust or particles of the tape's coat-  
ing can accumulate on the tape heads  
and other parts that the tape touches.  
This can greatly reduce the performance  
of the cassette player. After every 20  
hours of tape player operation, use a  
cassette deck cleaning kit (Cat. No. 44-  
1202) or follow these steps to clean the  
tape-handling parts.  
Cut off excess plastic tape  
Notes:  
1. Disconnect the AC power cord.  
• Be sure you cover only the hole that  
was originally covered by the erase-  
protection tab.  
2. Open the cassette compartment  
doors on TAPE 1 and TAPE 2.  
3. Press PLAY  
on TAPE 1 and  
• Removing the erase-protection tabs  
does not prevent a bulk eraser from  
erasing a cassette tape.  
TAPE 2 to expose the tape-handling  
parts.  
19  
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32-1166.fm Page 20 Wednesday, November 17, 1999 4:51 PM  
4. Use a cotton swab dipped in dena-  
tured alcohol or tape head cleaning  
solution to clean the record/play  
heads, pinch rollers, capstans, tape  
guides, and erase heads.  
5. When you finish cleaning, press  
STOP/EJECT  
on TAPE 1 and  
TAPE 2 and close the cassette com-  
partment doors. Then reconnect AC  
power.  
Your local RadioShack store sells a full  
line of cassette deck cleaning supplies.  
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, fast-  
forward the tape from the beginning to  
the end of one side, then completely re-  
wind it. Then loosen the tape reels by  
gently tapping each side of the cas-  
sette’s outer shell on a flat surface.  
Caution: Be careful not to damage the  
cassette when tapping it. Do not touch  
the exposed tape or allow any sharp ob-  
jects near the cassette.  
20  
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32-1166.fm Page 21 Wednesday, November 17, 1999 4:51 PM  
USING OPTIONAL COMPONENTS  
Warning: To protect your hearing and  
LISTENING THROUGH  
ANOTHER AUDIO  
COMPONENT  
prevent damage to the karaoke system,  
an audio source and/or an audio compo-  
nent, always set their volume controls to  
the lowest settings before turning them  
on.  
If you connected an audio component  
(such as PA system) follow these steps  
to listen to the karaoke system’s sound  
through that component.  
LISTENING TO ANOTHER  
AUDIO SOURCE  
1. Set FUNCTION SELECTOR to AUX.  
2. Press POWER to turn on the system.  
If you connected another audio source,  
follow these steps to listen to that source  
through your karaoke system.  
The POWER indicator lights.  
3. Turn on the audio component.  
4. Play a cassette, CD, or CDG in the  
karaoke system.  
1. Set FUNCTION SELECTOR to AUX.  
2. Press POWER to turn on the system.  
5. Adjust the sound with the controls  
explained in “Adjusting the Sound”  
on Page 12.  
The POWER indicator lights.  
3. Turn on the audio source.  
4. Adjust the sound with the controls  
explained in “Adjusting the Sound”  
on Page 12.  
6. To turn off the system, press  
POWER. The POWER indicator  
turns off. Then turn off the audio  
component.  
5. To turn off the system, press  
POWER. The POWER indicator  
turns off. Then turn off the audio  
source.  
21  
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32-1166.fm Page 22 Wednesday, November 17, 1999 4:51 PM  
RECORDING A CASSETTE TAPE  
You can become a recording star! The  
RECORDING YOUR VOICE  
WITH MUSIC  
system lets you record your voice on a  
blank or reusable tape as you sing along  
with a special karaoke cassette tape,  
video tape, CD/CDG or other audio  
source. You can also record from an ex-  
ternal audio source, or dub from one  
cassette tape to another.  
Follow these steps to record your voice  
along with music from a tape in TAPE 2,  
a CD/CDG, or an audio source connect-  
ed to the system’s AUX IN jacks.  
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 out, and the full reel to the  
left.  
Recording Tips:  
Tape quality greatly affects the qual-  
ity 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 low-noise, wide-range record-  
ings, use normal-bias tape.  
2. Follow Steps 1–11 in “Singing with a  
CD/CDG or a Cassette Tape” on  
Page 10 or Steps 1–6 in “With  
Another Audio Source” on Page 11.  
3. Press RECORD  
on TAPE 1 to  
and  
begin recording. RECORD  
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 19.  
Note: Press PAUSE  
temporarily stop recording. Press  
on TAPE 1 to  
PAUSE  
again to resume record-  
ing.  
4. Press STOP/EJECT  
to stop recording. RECORD  
PLAY release.  
on TAPE 1  
• Recording automatically stops when  
the tape in TAPE 1 reaches the end.  
To record on the other side, turn  
over the tape.  
and  
5. Press STOP/EJECT  
on TAPE 2  
or stop the audio source.  
22  
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32-1166.fm Page 23 Wednesday, November 17, 1999 4:51 PM  
DUBBING A CASSETTE  
TAPE  
You can copy any cassette tape on the  
karaoke system’s dual cassette decks  
using a source tape with the music or  
sound you want to copy and a blank or  
reusable tape to record on.  
Follow these steps to copy from one  
cassette tape to another.  
1. Set FUNCTION SELECTOR to TAPE.  
2. Press POWER to turn on the system.  
The POWER indicator lights.  
3. Load the cassette you want to copy  
into TAPE 2 with the side you want  
to record from facing out.  
4. Load a blank cassette (or one you  
want to record over) into TAPE 1  
with the side you want to record on  
facing out.  
5. Press PAUSE  
then RECORD  
on TAPE 1. Pause then RECORD  
and PLAY  
both lock down.  
6. Press PLAY  
on TAPE 2 to begin  
recording. PAUSE  
on TAPE 1  
automatically releases.  
Note: You can listen to the tape  
playing in TAPE 2 as you copy it. Set  
MASTER VOLUME to a comfortable  
level. The volume setting does not  
affect the recording level.  
7. Press STOP/EJECT  
1 to stop recording. RECORD  
PLAY release.  
on TAPE  
and  
8. Press STOP/EJECT  
on TAPE  
2 to stop playing the tape.  
23  
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32-1166.fm Page 24 Wednesday, November 17, 1999 4:51 PM  
TROUBLESHOOTING  
If you have problems operating your CDG Karaoke System, try these suggestions. If  
you still have problems, contact your local RadioShack store for assistance.  
Problem  
Possible Cause  
No power.  
Solution  
The karaoke system  
does not work.  
Make sure the power cord is  
properly plugged into an AC  
outlet.  
Power is on standby.  
Make sure the POWER  
indicator is on.  
A CD is loaded, but  
the CD/CDG player  
does not start.  
The CD/CDG is loaded Reload the CD/CDG, label side  
upside-down. up.  
The CD/CDG is dirty or Clean the CD/CDG and reload  
defective. it, or try a different CD/CDG.  
The CD/CDG’s  
sound skips.  
The CD/CDG is dirty or Clean the CD/CDG and reload  
defective.  
it, or try a different CD/CDG.  
Moisture has con-  
densed on the pickup  
lens.  
Unplug the system and wait 1  
hour for the moisture to evapo-  
rate.  
24  
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32-1166.fm Page 25 Wednesday, November 17, 1999 4:51 PM  
CARE AND MAINTENANCE  
Your Optimus CDG Karaoke System is an example of superior design and crafts-  
manship. The following suggestions will help you care for your karaoke system so  
you can enjoy it for years.  
Keep the karaoke system dry. If it gets wet, wipe it dry immediately.  
Liquids might contain minerals that can corrode the electronic circuits.  
Use and store the karaoke system only in normal temperature environ-  
ments. Temperature extremes can shorten the life of electronic devic-  
es and distort or melt plastic parts.  
Keep the karaoke system away from dust and dirt, which can cause  
premature wear of parts.  
Handle the karaoke system gently and carefully. Dropping it can dam-  
age circuit boards and cases and can cause the karaoke system to  
work improperly.  
Wipe the karaoke system with a damp cloth occasionally to keep it  
looking new. Do not use harsh chemicals, cleaning solvents, or strong  
detergents to clean the karaoke system.  
Modifying or tampering with the karaoke system’s internal components can cause  
a malfunction and might invalidate its warranty. If your karaoke system is not per-  
forming as it should, take it to your local RadioShack store for assistance.  
25  
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32-1166.fm Page 26 Wednesday, November 17, 1999 4:51 PM  
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 FCC Rules.  
These limits provide reasonable protec-  
tion against radio and TV interference in  
a residential area. However, your sys-  
tem might cause TV or radio interfer-  
ence 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 cir-  
cuits 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.  
26  
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32-1166.fm Page 27 Wednesday, November 17, 1999 4:51 PM  
SPECIFICATIONS  
Power Output (at 10% THD) ...................................................... 8 Watts per Channel  
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 ........................................................................................... 40–60 dB  
Dynamic Range .............................................................................. More Than 80 dB  
Speaker ....................................................... 5-Inch Woofer/2-Inch Tweeter (3 Ohms)  
Microphone (Monaural) Impedance ............................................................. 600 Ohm  
Power Source ............................................................................ AC 120V, 60 Hz, 60W  
Dimensions (HWD) ............................................................. 207/10 × 124/5 × 94/5 Inches  
(526 × 325 × 250 mm)  
Weight .......................................................................................................... 22 lb 1 oz  
(10 kg)  
Included Accessories ....................................... Microphone, Karaoke Cassette Tape,  
RCA Plug Cable, CDG Karaoke Disc  
Specifications are typical; individual units might vary. Specifications are subject to  
change and improvement without notice.  
27  
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32-1166.fm Page 28 Wednesday, November 17, 1999 4:51 PM  
Limited Ninety-Day Warranty  
This product is warranted by RadioShack against manufacturing defects in material and workman-  
ship under normal use for ninety (90) days from the date of purchase from RadioShack company-  
owned stores and authorized RadioShack franchisees and dealers. EXCEPT AS PROVIDED  
HEREIN, RadioShack MAKES NO EXPRESS WARRANTIES AND ANY IMPLIED WARRANTIES,  
INCLUDING THOSE OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE,  
ARE LIMITED IN DURATION TO THE DURATION OF THE WRITTEN LIMITED WARRANTIES  
CONTAINED HEREIN. EXCEPT AS PROVIDED HEREIN, RadioShack SHALL HAVE NO LIABIL-  
ITY OR RESPONSIBILITY TO CUSTOMER OR ANY OTHER PERSON OR ENTITY WITH RE-  
SPECT TO ANY LIABILITY, LOSS OR DAMAGE CAUSED DIRECTLY OR INDIRECTLY BY USE  
OR PERFORMANCE OF THE PRODUCT OR ARISING OUT OF ANY BREACH OF THIS WAR-  
RANTY, INCLUDING, BUT NOT LIMITED TO, ANY DAMAGES RESULTING FROM INCONVE-  
NIENCE, LOSS OF TIME, DATA, PROPERTY, REVENUE, OR PROFIT OR ANY INDIRECT,  
SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, EVEN IF RadioShack HAS BEEN AD-  
VISED OF THE POSSIBILITY OF SUCH DAMAGES.  
Some states do not allow the limitations on how long an implied warranty lasts or the exclusion of in-  
cidental or consequential damages, so the above limitations or exclusions may not apply to you.  
In the event of a product defect during the warranty period, take the product and the RadioShack  
sales receipt as proof of purchase date to any RadioShack store. RadioShack will, at its option, un-  
less otherwise provided by law: (a) correct the defect by product repair without charge for parts and  
labor; (b) replace the product with one of the same or similar design; or (c) refund the purchase  
price. All replaced parts and products, and products on which a refund is made, become the prop-  
erty of RadioShack. New or reconditioned parts and products may be used in the performance of  
warranty service. Repaired or replaced parts and products are warranted for the remainder of the  
original warranty period. You will be charged for repair or replacement of the product made after the  
expiration of the warranty period.  
This warranty does not cover: (a) damage or failure caused by or attributable to acts of God, abuse,  
accident, misuse, improper or abnormal usage, failure to follow instructions, improper installation or  
maintenance, alteration, lightning or other incidence of excess voltage or current; (b) any repairs  
other than those provided by a RadioShack Authorized Service Facility; (c) consumables such as  
fuses or batteries; (d) cosmetic damage; (e) transportation, shipping or insurance costs; or (f) costs  
of product removal, installation, set-up service adjustment or reinstallation.  
This warranty gives you specific legal rights, and you may also have other rights which vary from  
state to state.  
RadioShack Customer Relations, 200 Taylor Street, 6th Floor, Fort Worth, TX 76102  
We Service What We Sell  
04/99  
RadioShack  
A Division of Tandy Corporation  
Fort Worth, Texas 76102  
11A99  
Printed in Hong Kong  
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