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Cat. No. 14-733
OWNER’S MANUAL
Please read before using this equipment.
CTR-110
Extended Bass AM/FM
Cassette Recorder
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FEATURES
Your Optimus CTR-110 Extended
Bass AM/FM Cassette Recorder is a
versatile, easy-to-use music system
with many useful features. You can
record live or from the radio, or just
enjoy the radio or cassette player's
high quality sound.
The CTR-110's compact design an d
handy carrying handle let you take it
almost anywhere. Its features include:
Dual-Source Recordin
— lets you
record from the radio or use the builtin microphone to make a live shortdistance recording.
Automatic Level Control
— auto-
matically adjusts the record ing level .
One-Touch Recordin
— lets you
start recording quickly a nd easily.
Soft Cassette Tape E
— gently
ect
opens the cassette compartment
cover so the cas sette does not pop
out.
batteries, standard AC po wer (using
an optional AC adapter), or a vehicle’s DC power (using an optional DC
adapter).
PHONE Jack
— lets you connect optional earphones so you can listen in
privacy.
Extended Bass Switch
— boosts
low frequency sounds.
Three Power Sources
— let you
power the CTR-110 from internal
© 1997 Tandy Corporation.
Optimus and RadioShack are registered trademarks used by Tandy Corporation.
All Rights Reserved.
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CONTENTS
Preparation ..................................................................................................... 4
Power Sources .......................................................................................... 4
Using Batteries .................................................................................... 4
Using AC Power .................................................................................. 5
Using Vehicle Power ........................................................................... 5
Using Earphones ....................................................................................... 6
Listening Safely ................................................................................... 6
Traffic Safety ....................................................................................... 7
Radio Operation ............................................................................................. 8
Cassette Pla
Loading a Cassette Tape ........................................................................... 9
Playing a Cassette Tape ............................................................................ 9
Recording ................................................................................................ 10
Tape Tips ................................................................................................. 11
Care and Maintenance ................................................................................. 13
Cleaning the Tape Handling Parts ........................................................... 14
The FCC Wants You to Know .................................................................. 14
Specifications ............................................................................................... 15
er Operation ............................................................................. 9
Recording from the Radio ................................................................. 10
Making Live Recordings .................................................................... 10
Recommended Tapes ....................................................................... 11
Recording Over or Erasing a Cassette Tape ..................................... 11
Preventing Accidental Erasure .......................................................... 11
Restoring Tape Tension and Sound Quality ...................................... 12
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PREPARATION
POWER SOURCES
You can operate the CTR-110 using:
• Internal battery power (using
four C batteries)
• AC power (using an optional AC
adapter)
• Vehicle battery power (using an
optional DC adapter)
: Internal batteries automatically
Note
disconnect when you connect an
adapter.
Using Batte ries
You can power the CTR-110 from
four C batteries (not supplied). For
the best performance and longest
life, we recommend alkaline batteries, such as RadioShack Cat. No. 23-
551.
1. Turn the CTR-110 on its face,
pull the tabs on t he battery c om partment’s cover and remove
the cover.
2. Put four C ba tteries in the compartment, as indicated by the
polarity symbols (+ and –)
marked inside.
Illustration
Cautions
• Use only fresh batteries of the
required size and recommended type.
• Do not mix old and new bat-
teries, different types of batteries (standard, alkaline, or
rechargeable), or rechargeable batteries of different
capacities.
3. Replace the cover and snap it
shut.
If the CTR-110 does not operate
properly or if the sound weakens or
distorts, replace the batteries.
:
Cautions:
Illustration
4
• Dispose of the old batteries
promptly and properly. Do not
bury or burn them.
• Never le ave dead, old, or weak
batteries in the CTR-110. Batteries can leak chem icals that can
destroy electronic parts.
Illustration
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• If you do not plan to use the
CTR-110 from battery power for
a month or more, or if you plan
to use only an adapt er, remove
the batteries to protect t he CTR110 from possible battery leakage.
Using AC Power
You can power the CTR-110 from
standard AC power using an optional
AC adapter, such as RadioShack
Cat. No. 273-1663.
Cautions
• The recommended AC adapter
• Always plug t he adapter into the
1. Set the AC adapter’s voltage
:
supplies 6 volts and delivers at
least 400 milliamps. Its center tip
is set to negative, and its plug
correctly fits the CTR-110’s
6V
jack. Using an AC adapter
DC
that does not meet these specifications could damage the CTR1 10 or the adapter.
CTR-110 before you plug it into
the AC outlet, and always
unplug the adap ter from the AC
outlet before you unplug it from
the CTR-110.
switch to 6V.
2. Insert the AC ada pter’s 5.5 mm
outer diameter/2.1 mm inner
diameter barrel plug into the
adapter cord’s small end so it
reads –TIP, then insert the
adapter’s plug into the
DC 6V
jack on the back of the CTR-110.
3. Plug the adapter into a standard
AC outlet.
Using Vehicle Power
You can power the CTR-110 from
your vehicle’s battery using an optional DC adapter, such as RadioShack Cat. No. 273-1802.
Cautions:
• The recommended DC adapter
supplies 6 volts and delivers at
least 400 milliamps. Its center tip
is set to negative, and its plug
correctly fits the CTR-110’s
6V
jack. Using a DC adapter that
does not meet these specifications could damage the CTR110 or the adapter.
DC
5
Illustration
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• Always plug the adapter into th e
CTR-110 before you plug it into
the cigarette-lighter socket, and
always unplug the adap ter from
the cigarette-lighter socket
before you unplug it from the
CTR-110.
Follow these steps to use your vehicle’s battery.
Illustration
1. Set the DC adapter’s voltage
switch to 6V
2. Insert the DC adapter’s barrel
plug into the CTR-110’s
jack.
3. Insert the other end of the
adapter into your vehicle’s
cigarette-lighter socket.
.
DC 6V
USING EARPHONES
For private listening, you can connect a pair of earphones (not supplied) with a
RadioShack store carries a wide selection of earphones.
1
/8-inch plug. Your local
Insert the earphones’ 1/8-inch plug
into the
CTR-110.
Note
matically disconnects the built-in
speaker.
PHONE
: Connecting earphones auto-
jack on the top of the
Listening Safely
To protect your hearing, follow these
guidelines when you use earphones.
• 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
volume levels. Extended highvolume listening can lead to permanent hearing loss.
• Once you set the volume, do not
increase it. Over time, your ears
adapt to the vol ume level , s o a
volume level that does not
cause discomfort might still
damage your hearing.
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Traffic Safety
Do not wear earphones while operating a motor vehicle or riding a bicycle. This can create a tr affic hazard
and could be illegal in some areas.
Even though some earphones are
designed to let you hear s ome outside sounds when listening at normal
volume levels, they still can present a
traffic hazard.
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RADIO OPERATION
1. Set
FUNCTION
on the radio.
to
RADIO
to tur n
Illustration
2. Set
BAND
to
AM
or FM.
Illustration
3. Rotate the tuning control to
select the desired station.
Illustration
4. Adjust
comfortable listening level.
VOLUME MIN/MAX
Illustration
5. Set
E-BASS ON/OFF
boost low frequency sounds. Set
OFF
it to
for normal bass sound.
to ON to
Illustration
6. Set
FUNCTION
off the radio.
to
TAPE
to turn
Illustration
to a
:
Notes
• The AM antenna is built-in. To
improve AM reception, reposition the CTR-110.
• For the best FM reception,
fully extend the telescoping
antenna and swivel it to the
position that produces the
best reception.
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Illustr a tion
Illus tr at i on
Illus tr at i on
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CASSETTE PLAYER OPERATION
LOADING A CASSETTE
TAPE
1. Take up any slack in the tape by
turning the cass ette’s hub wi th a
pencil. If you do not remove
excess slack, the tape could
become tangled in the record/
playback mechanism.
Illustration
2. Press
STOP/EJECT
cassette compartment’s door.
to open the
Illustration
4. Gently close the compartment’s
door.
PLAYING A CASSETTE
TAPE
1. Set
2. With a cassette loaded in the
FUNCTION
compartment, press
:
Notes
•Press
stop playback. Press
again to resume playback.
PAUSE
TAPE
to
.
PLAY
.
to temporarily
PAUSE
3. Load the cassette with its open
edge facing up, its full reel to the
right, and the desired side
toward you.
Illustration
•Press
FAST-F
ward, or
rewind the tape to the desired
location.
to fast-for-
REWIND
to
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3. Adjust
VOLUME MIN/MAX
to a
comfortable listening level.
4. Set
E-BASS ON/OFF
to ON to
boost low frequency sounds. Set
OFF
it to
5. Press
for normal bass sound.
STOP/EJECT
to stop playback before it automatically
stops. Press
STOP/EJECT
again
to open the cassette compartment and remove the cassette
tape.
RECORDING
You can record from the radio or use
the built-in microphone to make a live
recording.
Caution
tape for recording, be sure its eraseprotection tabs are in place. If you
force down
side’s erase-protection tab is missing, you will damage the record
mechanism (see “Preventing Accidental Erasure” on Page 11).
: Before you load a c assette
RECORD
when a tape
Recording from the Radio
1. Load a blank cassette tape, or
one you want to record over, into
the cassette compartment.
FUNCTION
2. Set
BAND
3. Set
4. Adjust
to AM or FM.
TUNING
want to record.
ing.
RECORD
PLAY
5. Press
down.
Illustration
: To temporarily stop
Note
recording, press
resume recording, press
again.
6. Press
STOP/EJECT
recording.
RADIO
to
.
to the station you
to begin record-
RECORD
and
PAUSE
PAUSE
to stop
lock
. To
:
Notes
• The CTR-110’s Automatic Level
Control (ALC) automatically
adjusts the recording level.
UME MIN/MAX
has no effect on
recording.
• To record on the other side of
the tape, you must turn it over .
10
VOL-
Making Live Recordings
Follow these steps to make live recordings using the built-in microphone.
1. Load a blank cassette tape, or
one you want to record over, into
the cassette compartment.
2. Set
FUNCTION
to
TAPE
.
Illustration
Illustration
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3. Place the CTR-110 1–2 feet
from the recording source.
4. Press
5. Press
RECORD
PLAY
ing.
down.
: To temporarily stop
Note
recording, press
resume recording, press
again.
STOP/EJECT
recording.
to begin record-
RECORD
and
PAUSE
to stop
lock
. To
PAUSE
TAPE TIPS
Recommended Tapes
Tape quality grea tly affects the quality of the re cording. We recomm end
extended-range or low noise type 1
regular length (60 or 90-minute)
normal-bias cassette tapes. We do
not recommend long-play cassette
tapes such as C-120s because they
are thin and can easily tangle.
Recording Ove r or Eras ing a
Cassette Tape
Preventing Accidental
Erasure
Cassette tapes have two eraseprotection tabs, one for each side.
When a tab is in place, you can
record on that side.
To protect a recording from being accidentally recorded over or erased,
use a screwdriver to remove one or
both of the cassette tape’s eraseprotection tabs. This prevents
RECORD
If you later decide 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. Be sure you
cover only the hole originally covered
by the erase-protection tab.
from being pressed.
To record over a cassette tape, simply record as usual. The cassette
deck records over the previous recording.
You can quickly erase both sides of a
cassette tape using a bulk tape eraser available at your local RadioShack
store.
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Caution: Removing the eraseprotection tabs does not prevent a
bulk eraser from erasing a cassette
tape .
Restor in g Tap e Tens io n an d
Sound Quality
After you play a cassette tape several times, the tape might become
tightly wound on the reels. This can
cause playback sound qua lity to deteriorate.
To restore the sound quality, fastforward the tape from the beginning
to the end of one side, then completely rewind it. Then loosen the
tape reels by gently tapping each
side of the cassette’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 objects near the cassette.
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CARE AND MAINTENANCE
Your Optimus CTR-110 Extended B ass A M/FM Cass ette Re corder is an ex am ple of superior design and craftsmanship. The following suggestions will help you
care for your CTR-110 so you can enjoy it for years.
Keep the CTR-110 dry. If it gets wet, wipe it dry immediately. Liquids might c ontain minerals that can corrode the electronic c ircuits.
Use and store the CT R-110 only in normal temperature env ironments. Temperature ex tremes can shorten the life of electronic
devices, damage batteries, and distort or melt plastic parts.
Keep the CTR-110 away from dust and dirt, which can cause premature wear of parts.
Handle the CTR-110 gently and carefully. Dropping it can damage
circuit boards and cases and can cause the CTR-110 to work improperly.
Use only fresh batteries of the required size and type. Batteries
can leak chemicals that damage your CTR-110’s electronic parts.
Wipe the CTR-110 with a damp cloth occasionally to keep it looking new. Do not use harsh chemicals, cleaning solvents, or strong
detergents to clean the CTR-110.
Modifying or tampering with the CTR-110’s internal components can cause a
malfunction, invalidate your CTR-110’s warranty, and void your FCC authorization to operate it. If your CTR-110 is no t performing as it shoul d, take it to your
local RadioShack store for assistance.
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CLEANING THE TAPE
HANDLING PARTS
Dirt, dust, or particles of the tape’s
coating can accumulate o n the tape
heads and other parts that the tap e
touches. This can greatly redu ce th e
cassette player’s performance. To
prevent noise and poor highfrequency response, clean the cassette player’s tape handli ng pa rts af ter every 20 hours of use. Your local
RadioShack store sells a complete
line of cassette deck cleaning supplies.
1. Set
2. Remove the batteries and dis-
3. Press
4. Hold down the erase-protection
FUNCTION
connect any other power source.
STOP/EJECT
cassette compar tment’s cover.
tab sensor, then press
to expose the tape handling
parts.
TA PE
to
to open the
.
RECORD
clean the capstan, pinch rol lers,
tape guides, and tape heads.
Illustration
6. Press
the cassette compartment’s
cover. Then reconnect power.
STOP/EJECT
and close
THE FCC WANTS YOU
TO KNOW
Your CTR-110 might cause TV or radio interference even when it is operating properly. To determine whether
your CTR-110 is causing the interference, turn off your CTR-110. If th e interference goes away, your CTR-110
is causing it. Try to eliminate the interferenc e by:
Illustration
5. Use a cotton swab dipped in
tape head cleaning solution or
denatured alcohol to gently
14
• Moving your CTR-110 away
from the receiver
• Connecting your CTR-110 to an
outlet that is on a different electrical circuit from the receiver
• Contacting your local RadioShack store for help
If you cannot eliminate the interference, the FCC requires that you stop
using your CTR-110.
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SPECIFICATIONS
RADIO
Frequency Range:
FM............................................................................................. 88–108 MHz
AM ........................................................................................ 530–1710 kHz
Antenna:
FM ............................................................................... Telescoping Antenna
AM ............................................................................................. Ferrite Rod
CASSETTE PLAYER
Track System ................................................................................ 2 Track Mono
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Tape Speed ...............................................................................1
/8 inch/second
Recording System ........................................................ DC Bias, Magnet Erase
Frequency Response (Play) at ±6 dB ........................................... 125–6300 Hz
Frequency Response (Record/Play) at ±6 dB................................ 125–4000 Hz
Wow and Flutter .......................................................................... 0.3% (WRMS)
GENERAL
Power Requirements ....................................................... DC 6V (4 C Batteries)
Power Consumption .................................................................................. 0.7 W
5
Dimensions .......................................................... 5
/16 × 11 × 33/4 Inches (HWD)
(135 x 280 x 95 mm)
Weight .....................................................................................................38.8 oz
(1.1 Kg)
Specifications are typical; individual un its might vary. Specifications are subject
to change and improvement without notice.
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Limited Ninety-Day Warranty
This product is warrant ed by RadioShac k against manufacturing defects in materia l and workmanship under normal use for ninety (90) day s from the date of purc hase from Rad ioShack comp anyowned stores and authorized RadioShack franchisees and dealers. EXCEPT AS PROVIDED
HEREIN, RadioShack MAKES NO EXPRE SS WARRANTIES AND ANY IMPLIED WARRANTIES,
INCLUDING THOSE OF MERCHANTABIL ITY 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 H AVE NO LIABILITY OR RESPONSIBILITY TO CUSTOMER OR ANY OTHER PERSON OR ENTITY WITH RESPECT 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 WARRANTY, INCLUDING, BUT NOT LIMITED TO, ANY DAMA GES RESULTING FROM INCONVENIENCE, LOSS OF TIME, DATA, PROPERTY, REVENUE, OR PROFIT OR ANY INDIRECT,
SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, EVEN IF RadioShack HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
Some states do not allow the limitations on how lon
cidental or consequential dama
In the event of a product defect durin
sales receipt as proof of pur cha se date to any RadioS hack s tore. Radi oSha ck wil l, at its option, unless otherwise provided by l aw: (a) correct the defect by prod uct repai r without c har
labor; (b) replace the produc t with one of the same or similar desi
price. All replaced parts and pr oducts, and pro ducts on which a refund is made, become the property of RadioShack. New or rec onditioned parts and products may be used in the performance of
warranty service. Repa ired or replaced parts and produ cts are warranted for the remainder of the
ori
inal 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) dama
accident, misuse, impr oper or abnormal usa
maintenance, al teration, li
other than those provi ded by a RadioShack Autho rized Service Facility; ( c) consumables such as
fuses or batteries; (d) cos meti c dama
of product removal, installation, set-up service adjustment or reinstallation.
This warranty
state to state.
RadioShack Customer Relations, Dept. W, 100 Throckmorton St., Suite 600, Fort Worth, TX 76102
ives you specific legal rights, and you may also have other rights which vary from
es, so the above limitations or exclusions may not apply to you.
htning or other incidence of excess voltage or current; (b) any repair s
We Service What We Sell
an implied warranty lasts or the exclusion of in-
the warran ty perio d, take the produ ct and the Rad ioShack
n; or (c) refund the p urchase
e or failure caused by or attributable to acts of God, abuse,
e, failure to follow instruct ions, improper instal lation or
e; (e) transportatio n, shippi ng or insurance costs; or ( f) costs
e for parts and
3/97
RadioShack
A Division of Tandy Corporation
Fort Worth, Texas 76102
12A7 Printed in Hong Kong
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