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Cat. No. 42-2023
OWNER’S MANUAL
Please read before using this equipment.
LAB-1100
Fully Automatic Belt-Drive Turntable
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CONTENTS
Preparation .............................................................................................................. 5
Unpacking the Turntable .................................................................................... 5
Assembling the Turntable ................................................................................... 5
Connecting the Turntable to Your Receiver/Amplifier ......................................... 6
Connecting Power .............................................................................................. 7
Operation ................................................................................................................. 8
Using the Cue Button ......................................................................................... 9
Troubleshooting .................................................................................................... 10
Care and Maintenance .......................................................................................... 12
Record Care ..................................................................................................... 13
Cleaning/Replacing the Stylus ......................................................................... 13
Specifications ....................................................................................................... 14
This symbol is intended to alert you to
WARNING: To reduce the risk of
the presence of uninsulated danger-
ous voltage within the product’s enclo-
fire or shock hazard, do not ex-
pose this product to rain or mois-
ture.
sure that might be of sufficient
magnitude to constitute a risk of elec-
tric shock. Do not open the product’s
case.
CAUTION
This symbol is intended to inform you
that important operating and mainte-
nance instructions are included in the
literature accompanying this product.
RISK OF ELECTRIC SHOCK.
!
DO NOT OPEN.
!
: TO REDUCE THE RISK OF
CAUTION
ELECTRIC SHOCK, DO NOT REMOVE
COVER OR BACK. NO USER-SERVICE-
ABLE PARTS INSIDE. REFER SERVIC-
ING TO QUALIFIED PERSONNEL.
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PREPARATION
UNPACKING THE
TURNTABLE
When you remove the turntable assem-
bly with its attached dust cover from the
box, be sure to also remove the supplied
rubber mat and 45 RPM adapter before
you store the packing material.
WRONG
RIGHT
5. Plug the turntable’s power cord into
a standard AC outlet.
Caution: To prevent electric shock,
the plug’s blades are polarized and
fit only one way. If the plug does not
fit easily, turn it over and try again.
Do not force the plug into the AC
outlet.
ASSEMBLING THE
TURNTABLE
Note: The LIN (lead in), RET (auto re-
turn), and SW (tone arm switch) screws
on the bottom of the turntable are set at
the factory and should not be adjusted.
6. Remove the wire tie from the tone
arm, then press CUE to raise the
tone arm.
1. Open the dust cover.
7. Press PLAY and let the motor rotate
the turntable six or seven times,
then press STOP and check the
location of the belt on the spindle.
2. Rotate the turntable’s platter until
one of the platter’s two larger holes
is above the drive motor spindle on
the turntable’s upper left side.
illustration like p. 8
w/o arrow
illustration from origi-
nal o/m p. 4 left column
If the belt is not securely seated
around the spindle, reposition it
properly and repeat Step 6.
3. Remove the tape and two ribbons
from the rubber drive belt. Be sure
the belt is not twisted.
Note: If the belt slips off the spindle,
do not attempt to remove the platter.
Take it to your local RadioShack
store for assistance.
4. Using your fingers, center the belt
on the drive motor’s spindle (against
the lower rim) so the belt is securely
seated around the spindle.
8. Unplug the turntable’s power cord
from the AC outlet.
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• To connect the turntable to a low-
level phono input, plug the white
and red plugs into the receiver’s/
amplifier’s left and right PHONO
CONNECTING THE
TURNTABLE TO YOUR
RECEIVER/AMPLIFIER
LINE OUT ON/
jacks. Then set
You can connect your LAB-1100 to a re-
ceiver/amplifier (or stereo audio mixer)
that has low-level phono inputs (such as
left and right PHONO jacks) or line-level
inputs (such as left and right AUX, TV,
TAPE, or CD jacks).
PHONO OUT OFF
PHONO OUT
to
OFF
.
illustration
Note: If you are not sure which type of
input your receiver/amplifier has, check
your receiver’s/amplifier’s owner’s man-
ual.
Cautions:
• To connect the turntable to a line-
level input, plug the white and red
plugs into the receiver’s/ampli-
• Be sure to follow all the installation
instructions described in the en-
closed “Important Safety Instruc-
tions.”
AUX TV TAPE
fier’s left and right
CD
,
,
,
LINE OUT
or
jacks. Then set
• Do not connect the turntable to AC
power until you complete all other
connections.
ON/PHONO OUT OFF
LINE OUT
to
ON
.
• Do not place the turntable on top of
the receiver/amplifier or on any
other component that gets hot.
illustration
• To avoid possible damage to your
receiver/amplifier, turn it off before
making the connections.
1. With the receiver/amplifier off, plug
the turntable’s white (left) and red
(right) plugs into the appropriate
jacks on your receiver/amplifier.
2. Connect the turntable’s ground wire
to the amplifier’s/receiver’s GND or
earth terminal to avoid hum.
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3. Place the rubber mat, ridged side
down, on top of the platter.
illustration
CONNECTING POWER
Once you have connected the turntable
to your receiver/amplifier, plug the turn-
table’s power cord into a switched or un-
switched AC outlet on your receiver/
amplifier or into a standard AC outlet.
illustration
Caution: To prevent electric shock, the
plug’s blades are polarized and fit only
one way. If the plug does not fit easily,
turn it over and try again. Do not force
the plug into the AC outlet.
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OPERATION
LINE OUT
5. Press SPEED in or out to set the
Note: Make sure you have set
ON/PHONO OUT OFF for the type of
sound system you have before operat-
ing the turntable.
turntable’s speed (331/3 or 45 RPM).
illustration
1. Open the dust cover.
2. Remove the stylus cover.
6. Press PLAY. The turntable starts to
rotate and the tone arm moves to
the beginning of the record, lowers
to the record, then starts to play.
illustration
3. If you are playing a 331/3 RPM
record, place it directly over the
spindle.
illustration
If you are playing a 45 RPM record,
place the supplied 45 RPM adapter
over the turntable spindle, then
place the record over the adapter.
7. At the end of the record, the tone
arm automatically returns to the
tone arm rest and the turntable
stops. To stop playing the record
sooner, press STOP.
illustration
illustration
4. Set the 6"/12" selector according to
the record’s diameter. Then close
the dust cover.
Notes:
• If the tone arm does not automati-
cally return when it reaches the
end of the record, press STOP to
reset the mechanism.
• To protect the stylus from dam-
age, we recommend you replace
the stylus cover when you are not
using the turntable.
illustration
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USING THE CUE BUTTON
The cue button raises the tone arm so
you can safely move it to a specific sec-
tion of the record without worrying about
accidentally scratching it with the stylus.
CUE
1. Press
to raise the tone arm.
illustration
2. Push the tone arm to a spot directly
over the desired part of the record.
The turntable starts to rotate.
CUE
3. Press
again. The tone arm
slowly lowers and the record plays.
CUE
Note: You can also use
to lift
the tone arm anytime during play.
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TROUBLESHOOTING
If your turntable is not working as it should, these suggestions might help you solve
the problem. If the turntable still does not operate properly, take it to your local Ra-
dioShack store for assistance.
Symptom
Possible Cause
Suggestion
Turntable does not work
when plugged into an AC amplifier not turned on.
outlet
Connected receiver/
Turn on receiver/
amplifier.
Rubber drive belt slipped, Check rubber drive belt.
broken, or not mounted
properly.
Power problem.
Check the power cord and
AC outlet.
No sound
Receiver/amplifier vol-
ume set to minimum.
Adjust receiver/amplifier
volume.
Turntable not connected
correctly to receiver/ampli-
fier.
Recheck connections.
LINE OUT ON/PHONO OUT
OFF is set to PHONO OUT
OFF and turntable is con-
nected to receiver’s/ampli-
fier’s line-level input jacks.
Set LINE OUT ON/PHONO
OUT OFF to LINE OUT ON.
Stylus needs replacing.
Replace the stylus
(See “Cleaning/Replacing
the Stylus” on Page 13).
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Symptom
Possible Cause
Suggestion
Sound from turntable not
clear or scratchy during
play
Record is dirty.
Stylus is dirty.
Clean the record.
Clean the stylus with a
soft brush (See “Cleaning/
Replacing the Stylus” on
Page 13).
Stylus is improperly
installed.
Check the stylus and rein-
stall it if necessary.
Stylus is worn.
Replace the stylus.
LINE OUT ON/PHONO OUT
OFF is set to LINE OUT ON
and turntable is connected
to receiver’s/amplifier’s
low-level phono input
jacks.
Set LINE OUT ON/PHONO
OUT OFF to PHONO OUT OFF.
Hum from turntable dur-
ing play
Stylus is improperly
installed.
Check the stylus and rein-
stall it if necessary.
Turntable is picking up
Check ground terminal
induction hum from other and reposition the turnta-
components.
ble away from other com-
ponents.
LINE OUT ON/PHONO OUT
OFF is set to LINE OUT ON
and turntable is connected
to receiver’s/amplifier’s
low-level phono input
jacks.
Set LINE OUT ON/PHONO
OUT OFF to PHONO OUT OFF.
Feedback or howling
sound from turntable dur- sound pressure of vibra-
ing play tions from speakers.
Turntable is picking up
Reposition the turntable
away from speakers.
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CARE AND MAINTENANCE
Your Optimus LAB-1100 Fully Automatic Belt-Drive Turntable is an example of supe-
rior design and craftsmanship. The following suggestions will help you care for your
turntable so you can enjoy it for years.
Keep the turntable dry. If it gets wet, wipe it dry immediately. Liquids
might contain minerals that can corrode the electronic circuits.
Handle the turntable gently and carefully. Dropping it can damage cir-
cuit boards and cases and can cause the turntable to work improperly.
Use and store the turntable only in normal temperature environments.
Temperature extremes can shorten the life of electronic devices and
distort or melt plastic parts.
Keep the turntable away from dust and dirt, which can cause premature
wear of parts.
Wipe the turntable with a damp cloth occasionally to keep it looking
new. Do not use harsh chemicals, cleaning solvents, or strong deter-
gents to clean the turntable.
Modifying or tampering with the turntable’s internal components can cause a mal-
function and might invalidate your warranty and void your FCC authorization to oper-
ate it. If your turntable is not performing as it should, take it to your local RadioShack
store for assistance.
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If the stylus is worn, follow these steps
to replace it. You can order a replace-
ment stylus assembly AT3600LAX (RSU
No. 12039012) through your local Ra-
dioShack store.
RECORD CARE
• Always hold your records by the
edges. Touching the grooved sur-
face can leave fingerprints that can
collect dust and dirt.
1. Turn your receiver/amplifier off.
• Always return your records to their
jackets immediately after use. This
helps protect them from dust and
scratches.
2. Remove the stylus assembly from
the cartridge by gently grasping its
sides and pulling it down.
• Store your records in a vertical posi-
tion and protect them from extreme
temperatures, moisture, and direct
sunlight.
illustration
CLEANING/REPLACING
THE STYLUS
3. Insert a new stylus assembly and
gently snap it into place.
A dirty or worn stylus causes rough, dis-
torted sound and could damage your
records.
Caution: Do not touch the stylus while
cleaning or installing it.
If the stylus gets dirty or dusty, use a
soft brush to gently clean it.
illustration
DON’T SHOW STY-
LUS REMOVAL; CAN
BE
CLEANED
IN
PLACE
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SPECIFICATIONS
Turntable Platter
Type .................................................................................................................. Plastic
Outer Diameter ...................................................................... 1113/16 Inches (300 mm)
Drive System ............................................................................................... Belt Drive
Motor Type ................................................................................................... DC Motor
Turntable Type ................................................................................ Automatic Return
Rotation Speeds ............................................................ 2-Speed (331/3 and 45 RPM)
Tone Arm
Type ................................................................................................ Dynamic Balance
Effective Length ........................................................................ 11/16 Inches (195 mm)
9
Overhang ......................................................................................... /16 Inch (15 mm)
Tracking Error ........................................................................................ Less Than 4°
Cartridge
Output Voltage:
2.5 mv at 1 kHz (with LINE OUT ON/PHONO OUT OFF set to PHONO OUT OFF)
450 mv at 1 kHz (with LINE OUT ON/PHONO OUT OFF set to LINE OUT ON)
Frequency Response ............................................................................ 20–20,000 Hz
Channel Separation (1 kHz) ........................................................... More Than 15 dB
Load Resistance : 47 kohm (with LINE OUT ON/PHONO OUT OFF set to PHONO OUT
OFF)
Tracking Force ..................................................................................... 3.5 ±1.0 Gram
Stylus
Tip ...................................................................................................... Diamond Stylus
Replacement ......................................................... AT3600LAX (RSU No. 12039012)
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General
Signal-to-Noise Ratio (DIN-B) ........................................................................ > 50 dB
Wow and Flutter (JIS WARMS) at 3 kHz ....................................................... < 0.25%
Power Source .............................................................................. AC 120 Volts 60 Hz
Power Consumption ........................................................................................ 3 Watts
Dimensions (HWD) ........................ 313/16 × 141/4 × 1315/16 Inches (98 × 360 × 349 mm)
Weight ........................................................................................ 5 lbs 4 oz (2.38 kgs)
Included Accessory .......................................................................... 45 RPM Adapter
Specifications are typical; individual units might vary. Specifications are subject to
change and improvement without notice.
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Limited One-Year Warranty
This product is warranted by RadioShack against manufacturing defects in material and workman-
ship under normal use for one (1) year from the date of purchase from RadioShack company-owned
stores and authorized RadioShack franchisees and dealers. EXCEPT AS PROVIDED HEREIN, Ra-
dioShack 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 LIABILITY OR RE-
SPONSIBILITY TO CUSTOMER OR ANY OTHER PERSON OR ENTITY WITH RESPECT TO ANY
LIABILITY, LOSS OR DAMAGE CAUSED DIRECTLY OR INDIRECTLY BY USE OR PERFOR-
MANCE OF THE PRODUCT OR ARISING OUT OF ANY BREACH OF THIS WARRANTY, IN-
CLUDING, BUT NOT LIMITED TO, ANY DAMAGES RESULTING FROM INCONVENIENCE, LOSS
OF TIME, DATA, PROPERTY, REVENUE, OR PROFIT OR ANY INDIRECT, SPECIAL, INCIDEN-
TAL, OR CONSEQUENTIAL DAMAGES, EVEN IF RadioShack HAS BEEN ADVISED 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, Dept. W, 100 Throckmorton St., Suite 600, Fort Worth, TX 76102
We Service What We Sell
3/97
RadioShack
A Division of Tandy Corporation
Fort Worth, Texas 76102
11A98
Printed in China
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