Radio Shack Cassette Player 14 1107A User Guide

14-1107.fm Page 1 Thursday, July 1, 1999 11:15 AM  
Cat. No. 14-1107A  
OWNER’S MANUAL  
Please read before using this equipment.  
CTR-94  
DC Portable Cassette Tape Recorder  
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CONTENTS  
Preparation .......................................................................................................4  
Connecting Power .......................................................................................4  
Using Internal Batteries.........................................................................4  
Checking the Battery Condition.............................................................5  
Using AC Power....................................................................................5  
Using Vehicle Battery Power.................................................................6  
Connecting an Earphone.............................................................................7  
Listening Safely..................................................................................... 7  
Traffic Safety .........................................................................................7  
Operation ..........................................................................................................8  
Loading a Cassette......................................................................................8  
Playing a Tape .............................................................................................8  
Recording ....................................................................................................9  
Using the Built-In Microphone ...............................................................9  
Using an External Microphone ..............................................................9  
Recording from an External Audio Source..........................................10  
Tape Tips ................................................................................................... 11  
Recommended Tapes ......................................................................... 11  
Erasing a Cassette Tape ..................................................................... 11  
Preventing Accidental Erasure............................................................12  
Restoring Tape Tension and Sound Quality ........................................12  
Maintenance.................................................................................................... 13  
Cleaning the Tape-Handling Parts.............................................................14  
Specifications.................................................................................................15  
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PREPARATION  
Cautions:  
CONNECTING POWER  
• Always dispose of old batter-  
ies promptly and properly.  
You can power your CTR-94 from  
any of these power sources:  
• Never leave dead, old, or  
weak batteries in the CTR-94.  
Batteries can leak chemicals  
and corrode or damage elec-  
tronic circuits.  
• Internal batteries  
• Standard AC power (with an  
optional AC adapter)  
• Vehicle battery power (with an  
optional DC auto adapter)  
• If you do not plan to use bat-  
teries in the CTR-94 for a  
month or more, remove the  
batteries to protect the CTR-  
94 from possible battery leak-  
age.  
Note: Connecting an adapter discon-  
nects the internal batteries.  
Using Internal Batteries  
3. Install the batteries as indicated  
by the polarity symbols (+ and –)  
marked inside the battery com-  
partment.  
You can power your CTR-94 from  
four C batteries (not supplied). For  
the best performance, we recom-  
mend alkaline batteries, such as Cat.  
No. 23-551.  
Cautions:  
• Use only fresh batteries of the  
required size and type.  
1. Press down on the battery com-  
partment cover’s grooves and  
slide it off in the direction of the  
arrow.  
• Never mix fresh and old bat-  
teries, or different battery  
types.  
4. Replace the cover.  
2. Remove the old batteries (if nec-  
essary).  
4
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• Always plug the adapter into the  
CTR-94 before you plug it into  
the AC outlet, and always  
unplug the adapter from the AC  
outlet before you unplug it from  
the CTR-94.  
Checking the Battery  
Condition  
To check the battery’s condition,  
press PLAY, REWIND, or FAST-F. If  
the RECORD/BATTERY indicator  
lights steadily, the batteries need re-  
placing.  
Note: The recorder automatically  
disconnects internal batteries when  
you connect an AC adapter.  
1. Set the adapter’s voltage switch  
to 6V.  
(illus)  
(illus)  
Using AC Power  
2. Insert the adapter’s green-tipped  
barrel plug into the adapter’s  
cord so it reads TIP-NEG.  
You can also power the CTR-94 from  
standard AC power using an AC  
adapter, such as Radio Shack Cat.  
No. 273-1662 (not supplied).  
(illus)  
Cautions:  
3. Plug the adapter’s barrel plug  
into the DC 6V jack on the left  
side of the CTR-94.  
• The recommended adapter sup-  
plies 6 volts and delivers at least  
300 milliamps. Its center tip is  
set to negative, and its plug cor-  
rectly fits the CTR-94’s DC 6V  
jack. Using an adapter that does  
not meet these specifications  
could seriously damage the  
CTR-94 or the adapter.  
EAR AUX REM  
MIC  
MIN – VOLUME – MAX  
+
DC 6V  
-
4. Plug the other end of the  
adapter into a standard AC out-  
let.  
5
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2. Insert the DC adapter’s black-  
tipped barrel plug into the  
adapter’s cord so it reads TIP-  
NEG.  
Using Vehicle Battery Power  
You can also power the CTR-94 from  
your vehicle’s battery using an auto  
DC adapter (such as Radio Shack  
Cat. No. 14-844, not supplied) that  
connects to your vehicle’s cigarette-  
lighter socket.  
(illus)  
Cautions:  
3. Insert the adapter’s barrel plug  
into the CTR-94’s DC 6V jack.  
• The recommended DC adapter  
supplies 6 volts and delivers at  
least 300 milliamps. Its center tip  
is set to negative, and its plug  
correctly fits the recorder’s DC  
6V jack. Using an adapter that  
does not meet these specifica-  
tions could seriously damage  
the recorder or the adapter.  
EAR AUX REM MIC  
MIN – VOLUME – MAX  
DC 6V  
+
-
• Always plug the adapter into the  
recorder before you plug it into  
the cigarette-lighter socket, and  
always unplug the adapter from  
the  
cigarette-lighter  
socket  
before you unplug it from the  
recorder.  
1. Set the DC adapter’s voltage  
switch to 6V.  
4. Plug the adapter’s larger plug  
into the vehicle’s cigarette lighter  
socket.  
(illus)  
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Listening Safely  
CONNECTING AN  
EARPHONE  
To protect your hearing, follow these  
guidelines when you use an ear-  
phone.  
For private listening, you can use the  
supplied earphone. Insert the ear-  
1
EAR  
phone’s /8-inch plug into the  
jack.  
• Do not listen at extremely high  
volume levels. Extended high  
volume listening can lead to per-  
manent hearing loss.  
• Set the volume to the lowest set-  
ting before you begin listening.  
After you begin listening, adjust  
the volume to a comfortable  
level.  
EAR AUX REM MIC  
MIN – VOLUME – MAX  
• Once you set the volume, do not  
increase it. Over time, your ears  
adapt to the volume level, so a  
volume level that does not  
cause discomfort might still  
damage your hearing.  
Note: Connecting the earphone au-  
tomatically disconnects the built-in  
speaker.  
Traffic Safety  
Do not wear an earphone while oper-  
ating a motor vehicle or riding a bicy-  
cle. This can create a traffic hazard  
and is illegal in some areas.  
Even though some earphones are  
designed to let you hear some out-  
side sounds when listening at normal  
volume levels, they still present a  
traffic hazard.  
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OPERATION  
LOADING A CASSETTE  
PLAYING A TAPE  
1. Take up any slack in the tape by  
turning one of the cassette’s  
hubs with a pencil.  
Warning: To protect your hearing, set  
VOLUME to its lowest setting before  
you begin playing a cassette tape.  
EAR AUX REM MIC  
MIN – VOLUME – MAX  
(illus)  
1. Load a prerecorded cassette  
tape into the compartment.  
Caution: If you do not remove  
excess slack, the tape might get  
tangled in the record/playback  
mechanism.  
2. Press PLAY. The cassette plays  
until it reaches the end of the  
side, then it automatically stops  
and PLAY releases.  
2. Press STOP/EJECT to open the  
cassette compartment door.  
MIC  
CTR-94 AC/BATTERY CASSETTE RECORDER  
MIC  
STOP  
EJECT  
RECORD  
PLAY  
REWIND  
FAST-F  
PAUSE  
CTR-94 AC/BATTERY CASSETTE RECORDER  
STOP  
EJECT  
RECORD  
PLAY  
REWIND  
FAST-F  
PAUSE  
Notes:  
3. Load the cassette with its open  
edge toward the controls, the  
desired side facing up, and its  
full reel on the left.  
• Press PAUSE to temporarily  
stop playback. To resume  
playback, press PAUSE again.  
• Press FAST-F or REWIND to  
rapidly wind the tape forward  
or backward. To resume play,  
press STOP/EJECT then PLAY.  
(illus)  
• The cassette automatically  
stops when the tape reaches  
the end only in the PLAY or  
RECORD modes, and not in  
the  
FAST-F  
modes.  
or REWIND  
4. Close the door.  
8
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3. Adjust VOLUME to the desired  
3. Press RECORD to begin record-  
ing. Both PLAY and RECORD  
lock down.  
listening level.  
4. Press STOP/EJECT to com-  
pletely stop playback before it  
CTR-94 AC/BATTERY CASSETTE RECORDER  
MIC  
STOP  
EJECT  
automatically  
STOP/EJECT again to open the  
cassette compartment and  
stops.  
Press  
RECORD  
PLAY  
REWIND  
FAST-F  
PAUSE  
remove the cassette.  
4. Speak into MIC.  
RECORDING  
MIC  
CTR-94 AC/BATTERY CASSETTE RECORDER  
STOP  
PAUSE  
Notes:  
RECORD  
PLAY  
REWIND  
FAST-F  
EJECT  
• Before you load a cassette tape  
for recording, be sure the cas-  
sette’s erase-protection tabs are  
in place (see “Preventing Acci-  
dental Erasure”).  
To temporarily stop record-  
ing, press PAUSE. To resume  
recording, press PAUSE again.  
Note:  
• The CTR-94’s Automatic Level  
Control (ALC) circuit automati-  
cally adjusts the recording level.  
VOLUME has no effect on  
recording.  
5. Press STOP/EJECT to stop  
recording.  
Using an External  
Microphone  
Using the Built-In  
Microphone  
You can connect an external micro-  
1
phone with a /8-inch plug to the re-  
The built-in condenser microphone is  
a high-sensitivity microphone that  
easily picks up sounds, near or far.  
This is handy for recording confer-  
ences or lectures.  
corder. This is handy for when you  
want to record only an individual’s  
voice and exclude all other sounds  
in the surrounding area. Your local  
Radio Shack store carries a wide  
variety of external microphones.  
1. Load a blank cassette tape, or  
one you want to record over, into  
the cassette compartment.  
Connecting an external micro-  
Note:  
phone automatically disconnects the  
built-in condenser microphone.  
2. Place the recorder 2 or 3 feet  
from the recording source.  
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1. Load a blank cassette tape, or  
one you want to record over, into  
the cassette compartment.  
Recording from an External  
Audio Source  
You can record directly from an ex-  
ternal audio source, such as a radio,  
tape deck, or CD player, using a suit-  
able patch cord (not supplied) with a  
1/8-inch plug.  
2. If the external microphone has  
1
only a /8-inch plug, insert it into  
the recorder’s MIC jack.  
EAR AUX REM MIC  
MIN – VOLUME – MAX  
Before you connect an exter-  
Note:  
nal audio source to the recorder, be  
sure the source’s and the recorder’s  
volume controls are set to their mini-  
mum setting.  
1. Load a blank cassette tape, or  
one you want to record over, into  
the cassette compartment.  
If the external microphone has  
two plugs and an on/off switch,  
you can remotely control the  
CTR-94 from your microphone.  
2. If you connected an external  
microphone, disconnect it.  
3. Connect your external audio  
source to the AUX jack, using an  
optional patch cord with a 1/8-  
inch plug at one end and the  
appropriate plug at the other end  
1
Insert the microphone’s /8-inch  
plug into the recorder’s MIC jack,  
and the smaller plug into the  
REM jack.  
that  
matches  
your  
audio  
3. Press RECORD to begin record-  
ing. Both PLAY and RECORD  
lock down.  
source’s output jack.  
To temporarily stop record-  
Note:  
EAR AUX REM MIC  
MIN – VOLUME – MAX  
ing, press PAUSE on the recorder  
(or OFF on the microphone). To  
resume recording, press PAUSE  
again on the recorder (or ON on  
the microphone).  
4. Speak into the external micro-  
phone.  
4. Start the sound source and set  
its volume to a normal listening  
level.  
5. Press STOP/EJECT to stop  
recording.  
10  
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14-1107.fm Page 11 Thursday, July 1, 1999 11:15 AM  
Note: During recording, the  
speaker is muted. If you want to  
monitor the recording, use the  
supplied earphone.  
TAPE TIPS  
Recommended Tapes  
Tape quality greatly affects the qual-  
ity of the recording. We recommend  
extended-range or low noise Type 1  
regular length (60- or 90-minute) nor-  
mal-bias cassette tapes. We do not  
recommend long-play cassette tapes  
such as C-120s because they are  
thin and easily tangle.  
RECORD  
5. Press  
ing. Both  
lock down.  
to begin record-  
and  
PLAY RECORD  
Note: To temporarily stop  
PAUSE  
recording, press  
resume recording, press  
again.  
.
To  
PAUSE  
STOP/EJECT  
6. Press  
recording.  
to stop  
Erasing a Cassette Tape  
Important: Most material on prere-  
corded tapes is copyrighted. Unau-  
thorized duplication of copyrighted  
material is a violation of the copyright  
laws of most countries and such du-  
plication may result in fines and/or  
imprisonment. Note, however, that in  
the United States, it is not a violation  
of U.S. copyright laws for a consumer  
to use an audio recording device to  
duplicate musical recordings for non-  
commercial (personal) use.  
To record over a cassette tape, sim-  
ply record as usual. The cassette  
deck records over the previous re-  
cording.  
To erase a cassette tape, insert the  
MIC  
supplied erasing plug into the  
RECORD  
jack and press  
.
EAR AUX REM MIC  
MIN – VOLUME – MAX  
Note: Be sure you have not connect-  
AUX  
ed anything to the  
jack.  
If you need to erase an entire cas-  
sette, you might prefer using a bulk  
tape eraser, which is available at  
your local Radio Shack store.  
11  
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14-1107.fm Page 12 Thursday, July 1, 1999 11:15 AM  
Caution: Removing the erase-pro-  
tection tabs does not prevent a bulk  
eraser from erasing a cassette tape.  
Preventing Accidental  
Erasure  
Cassette tapes have two erase-pro-  
tection tabs — one for each side.  
When a tab is in place, you can  
record on that side.  
Restoring Tape Tension and  
Sound Quality  
After you play a cassette tape sever-  
al times, the tape might become  
tightly wound on the reels. This can  
cause playback sound quality to de-  
teriorate.  
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-  
protection tabs. This prevents  
RECORD from being pressed.  
To restore the sound quality, fast-for-  
ward 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  
cassette’s outer shell on a flat sur-  
face.  
(illus)  
If you later decide to record on a tape  
side after you have removed the  
erase-protection tab for that side,  
place a piece of strong plastic tape  
over that side’s erase-protection  
hole. Be sure you cover only the hole  
originally covered by the erase-pro-  
tection tab.  
Caution: Be careful not to damage  
the cassette when tapping it. Do not  
touch the exposed tape or allow any  
sharp objects near the cassette.  
(illus)  
12  
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MAINTENANCE  
Your Radio Shack CTR-94 DC Portable Cassette Tape Recorder is an example  
of superior design and craftsmanship. The following suggestions will help you  
care for your CTR-94 so you can enjoy it for years.  
Keep the CTR-94 dry. If it gets wet, wipe it dry immediately. Liq-  
uids might contain minerals that can corrode the electronic cir-  
cuits.  
Handle the CTR-94 gently and carefully. Dropping it can damage  
circuit boards and cases and can cause the CTR-94 to work im-  
properly.  
Use and store the CTR-94 only in normal temperature environ-  
ments. Temperature extremes can shorten the life of electronic  
devices and distort or melt plastic parts.  
Keep the CTR-94 away from dust and dirt, which can cause pre-  
mature wear of parts.  
Wipe the CTR-94 with a damp cloth occasionally to keep it looking  
CLEANER  
new. Do not use harsh chemicals, cleaning solvents, or strong de-  
tergents to clean the CTR-94.  
Modifying or tampering with the CTR-94’s internal components can cause a mal-  
function and might invalidate your CTR-94’s warranty. If your CTR-94 is not per-  
forming as it should, take it to your local Radio Shack store for assistance.  
13  
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14-1107.fm Page 14 Thursday, July 1, 1999 11:15 AM  
4. tape head cleaning solution or  
denatured alcohol to gently  
clean the capstan, pinch roller,  
tape head, and tape guides.  
CLEANING THE TAPE-  
HANDLING PARTS  
Dirt, dust, or particles of the tape’s  
coating can accumulate on the tape  
heads and other parts the tape  
touches. This can greatly reduce the  
cassette recorder’s performance.  
(illus)  
To prevent noise and poor high-fre-  
quency response, clean the cassette  
recorder’s tape-handling parts after  
every 20 hours of use.  
Note: Your local Radio Shack store  
carries a complete line of cassette  
cleaning supplies.  
5. When you finish cleaning, press  
STOP/EJECT  
and close the com-  
partment.  
1. Remove the batteries and dis-  
connect any other power source.  
2. Open the cassette compartment  
cover.  
PLAY  
3. Press  
to expose the tape-  
handling parts.  
14  
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SPECIFICATIONS  
CASSETTE PLAYER  
Track System ...........................................................................2-Track Monaural  
Tape Speed .......................................................................................4.76 cm/sec  
Recording System........................................................ Magnetic Erase, AC Bias  
Frequency Response ............................................................ 125–6.3 kHz ±6 dB  
Signal-to-Noise Ratio ..................................................................................55 dB  
Wow and Flutter .........................................................................................0.35%  
GENERAL  
Power Requirements................................................................................. DC 6V  
Four C Batteries (Cat. No. 23-551/651)  
AC Adapter (Cat. No. 273-1662)  
DC Auto Adapter (Cat. No. 14-844)  
Dimensions (HWD).........................................................13/4 ¥ 511/16 ¥ 95/8 Inches  
(45 ¥ 145 ¥ 245 mm)  
Weight (without batteries)......................................................................... 1.75 lb.  
(794 g)  
Specifications are typical; individual units might vary. Specifications are subject  
to change without notice.  
15  
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14-1107.fm Page 16 Thursday, July 1, 1999 11:15 AM  
RADIO SHACK LIMITED WARRANTY  
This product is warranted against defects for 90 days from date of purchase from  
Radio Shack company-owned stores and authorized Radio Shack franchisees  
and dealers. Within this period, we will repair it without charge for parts and labor.  
bring your Radio Shack sales slip  
Simply  
as proof of purchase date to any  
Radio Shack store. Warranty does not cover transportation costs. Nor does it  
cover a product subjected to misuse or accidental damage.  
EXCEPT AS PROVIDED HEREIN, RADIO SHACK 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 pur-  
chaser.  
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  
9/94  
RADIO SHACK  
A Division of Tandy Corporation  
Fort Worth, Texas 76102  
3A6  
Printed in Hong Kong  
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