Radio Shack Stereo Amplifier MPA 50 User Guide

Owner’s Manual  
Please read before using this equipment.  
 
32-2002.fm Page 2 Friday, February 11, 2000 11:36 AM  
ˆ Contents  
Features ................................................................................................................... 3  
Preparation .............................................................................................................. 4  
Presetting the Controls ....................................................................................... 4  
Choosing a Location ........................................................................................... 4  
Placing the Speakers .......................................................................................... 4  
Making Connections ............................................................................................... 5  
Speakers .................................................................................................................. 6  
Speaker Phasing ................................................................................................ 6  
Determining Total Speaker Impedance .............................................................. 6  
Connecting Speakers ......................................................................................... 7  
One Speaker ................................................................................................ 8  
Two or More Speakers Without Transformers ............................................. 8  
Multiple Speakers with Transformers ......................................................... 10  
Controls and Operation ........................................................................................ 12  
Troubleshooting .................................................................................................... 13  
Care ........................................................................................................................ 14  
Replacing the Fuse ........................................................................................... 14  
Specifications ........................................................................................................ 15  
© 2000 Tandy Corporation.  
All Rights Reserved.  
RadioShack and RadioShack.com are trademarks used by Tandy Corporation.  
2
 
32-2002.fm Page 3 Friday, February 11, 2000 11:36 AM  
ˆ Features  
Your RadioShack MPA-50 40-Watt PA  
Amplifier gives you 40 watts of solid  
power for your public address (PA) sys-  
tem. The built-in three-band equalizer  
enables you to tailor the sound to fit your  
environment. Its wide frequency re-  
sponse easily handles amplification of  
voice and music.  
Your amplifier is ETL listed to UL stan-  
dards and meets all applicable FCC  
standards.  
WARNING: To reduce the risk of fire or  
shock hazard, do not expose this product to  
rain or moisture.  
CAUTION  
Its other features include:  
RISK OF ELECTRIC  
!
SHOCK. DO NOT OPEN.  
Built-In Mixer and Preamplifier — pro-  
duce the best output possible, even with  
low-level audio input.  
CAUTION: TO REDUCE THE RISK  
OF ELECTRIC SHOCK, DO NOT  
REMOVE COVER OR BACK. NO USER-  
SERVICEABLE PARTS INSIDE. REFER  
SERVICING TO QUALIFIED PERSON-  
NEL.  
Microphone Jacks — let you connect  
up to two high- or low-impedance micro-  
phones.  
This symbol is intended to  
alert you to the presence of  
uninsulated dangerous voltage  
within the product’s enclosure  
that might be of sufficient mag-  
nitude to constitute a risk of  
electric shock. Do not open  
the product’s case.  
Input Jacks — let you connect auxiliary  
equipment, such as a CD player, tape  
deck, or receiver, for music and special  
effects.  
Spring-Loaded Terminals — make  
speaker connection easy.  
Master Volume Control — lets you ad-  
just the overall sound level.  
This symbol is intended to  
inform you that important oper-  
ating and maintenance instruc-  
!
tions are included in the  
literature accompanying this  
product.  
Individual Microphone Controls — let  
you separately adjust the volume of  
each microphone.  
Auxiliary Volume Control — lets you  
adjust the volume of the connected  
equipment.  
Priority Terminals — let you connect  
an optional switch to cut out all other au-  
dio input sources and give priority to  
only the MICROPHONE 1 input.  
Features  
3
 
32-2002.fm Page 4 Friday, February 11, 2000 11:36 AM  
ˆ Preparation  
Notes:  
• Place the speakers so they are  
PRESETTING THE  
CONTROLS  
mounted slightly above the listeners’  
heads and pointed toward them.  
Warning: A sudden high output from the  
amplifier could damage your hearing or  
the speakers connected to the amplifi-  
er’s output.  
• When using more than one speaker,  
overlap the projection areas of the  
speakers to prevent “dead” spots.  
To avoid accidentally overdriving a  
channel or prematurely amplifying an  
audio input, set all the amplifier’s front-  
panel controls to their lowest settings.  
To avoid sudden audio from the input  
sources, be sure all audio devices are  
turned off before you connect them to  
the amplifier.  
CHOOSING A LOCATION  
Choose a location with adequate venti-  
lation. Do not place the amplifier on thick  
carpeting or cushions (which can restrict  
the air flow) or near a heat source, such  
as a heat vent or radiator (which can  
cause the amplifier to overheat).  
PLACING THE SPEAKERS  
Speaker placement depends on your  
room’s size and arrangement. We rec-  
ommend you play a wide-range record-  
ing and experiment with speaker  
placement until you find the locations  
that result in the best sound.  
4
Preparation  
 
32-2002.fm Page 5 Friday, February 11, 2000 11:36 AM  
ˆ Making Connections  
Important: Connect all auxiliary equipment and speakers before connecting power.  
PHONO L (Left) and R (Right) Input  
Jacks — Connect a turntable with a  
magnetic cartridge. To avoid distortion,  
do not connect a high-level audio input  
source to these jacks. Even though the  
amplifier has L and R input jacks, the  
output from the amplifier is monaural.  
PHONO/AUX/CD Switch — Select the  
input source. Even if you connected  
auxiliary equipment to both the PHONO  
and AUX/CD input jacks, you can use  
only one source at a time.  
Speaker Push Terminals — Press the  
appropriate tab to open a terminal. In-  
sert the end of a speaker wire into the  
opening, then release the tab to close  
the terminal and secure the wire (see  
“Connecting Speakers” on Page 7).  
AUX/CD L and R Input Jacks — Con-  
nect any high-level sound source (such  
as a tape deck, CD player, receiver, or a  
turntable with a ceramic or crystal car-  
tridge). To connect a stereo source, use  
shielded audio cable (available at your  
local RadioShack store); however, the  
amplifier’s output is monaural.  
PRIORITY Terminals — To allow MI-  
CROPHONE 1 to override all other inputs,  
connect an SPST (single-pole, single-  
throw) switch to the amplifier’s PRIORITY  
terminals using normal two-conductor  
wire (switches and wire are available at  
your local RadioShack store). Refer to  
the switch’s manual for connection and  
usage instructions.  
GROUND Screw  
Connect the  
ground wire (usually black or green)  
from your turntable to this screw to avoid  
a low-frequency hum. You can also use  
this screw to ground any other system  
connection.  
AC Power Cord — To use AC power,  
plug this cord into an AC outlet.  
Making Connections  
5
 
32-2002.fm Page 6 Friday, February 11, 2000 11:36 AM  
ˆ Speakers  
minal that does not have the wire  
attached to it.  
SPEAKER PHASING  
Phasing is the direction the speaker  
cone moves with reference to the polari-  
ty of the connection wires. Proper phas-  
ing is important when you use more than  
one speaker in the same room or area.  
Out-of-phase speakers can lose up to  
one-half of their potential volume, and  
can have a significantly decreased bass  
effect.  
4. Touch the negative end of the bat-  
tery with the lose end of the wire  
attached to the other speaker termi-  
nal. Note the direction of the cone  
movement — inward or outward.  
5. If the speaker cone moves outward,  
the speaker terminal where you  
touched the positive end of the bat-  
tery is positive. Mark that terminal  
with a + and mark the other terminal  
with a –.  
Speakers are in phase if all the speaker  
cones move in the same direction when  
an equal signal is applied. Phasing is  
correct if you observe the correct polari-  
ty (+ to + and – to –) when connecting  
the speakers.  
If the speaker cone moves inward,  
the speaker terminal with the wire  
attached that touched the negative  
end of the battery is positive. Mark  
that terminal with a + and mark the  
other terminal with a –.  
Most speaker terminals are color-coded  
or have a mark that indicates the termi-  
nal’s polarity. Usually, terminals with  
positive polarity are red or have a plus  
symbol (+), and terminals with negative  
polarity are black or have a minus sym-  
bol (–). If the speaker terminals are un-  
marked, follow these steps to determine  
their polarity.  
6. Remove the wire.  
Repeat Steps 2–6 for each speaker with  
unmarked terminals you plan to connect  
to the amplifier.  
DETERMINING TOTAL  
SPEAKER IMPEDANCE  
1. Remove about 1 inch of insulation  
from both ends of a short piece of  
wire (available at your local  
RadioShack store). Then twist the  
exposed wire to secure all its  
strands.  
Caution: A total speaker impedance  
that is higher than 16 ohms () or lower  
than 4 ohms can damage your amplifier  
or speakers. Be sure to make the proper  
connections.  
2. Connect one end of the wire to one  
of the speaker terminals.  
Before you connect speakers to the am-  
plifier, you must determine the total  
speaker impedance. In determining the  
total speaker impedance, you must first  
3. Touch the positive end of a 1.5-volt  
flashlight battery to the speaker ter-  
6
Speakers  
 
32-2002.fm Page 7 Friday, February 11, 2000 11:36 AM  
determine if your speakers are connect-  
ed in series, parallel, or series/parallel  
combined.  
mum impedance (16 ohms) or fall  
below its minimum impedance (4  
ohms).  
Note: We recommend that you use  
speakers that are rated the same (for  
example, all 8-ohm speakers) for all se-  
ries or parallel connections.  
For example, if you connect four 8-  
ohm speakers:  
In series, the total impedance is 32  
ohms (8 + 8 + 8 + 8 = 32). This  
exceeds the maximum rating.  
• Speakers are connected in series  
when the first speaker’s positive ter-  
minal is connected to the next  
speaker’s negative terminal. Deter-  
mine the total impedance of speak-  
ers connected in series by adding  
up the individual impedances of all  
the connected speakers.  
In parallel, the total impedance is 2  
ohms (8 ÷ 4 = 2). This falls below  
the minimum rating.  
You can arrive at a proper total  
impedance by combining series and  
parallel connections.  
For example, if you want to connect  
two 8-ohm speakers in series, add 8  
(the impedance of one speaker)  
plus 8 (the impedance of the other  
speaker) for a total speaker imped-  
ance of 16 ohms.  
CONNECTING SPEAKERS  
You need speakers and wire (available  
at your local RadioShack store) to com-  
plete the connections to your amplifier.  
Be sure to use 16-gauge wire or heavi-  
er. (The smaller the gauge number, the  
heavier the wire.)  
• Speakers are connected in parallel  
when all their negative terminals are  
connected together and all their  
positive terminals are connected  
together. For speakers rated the  
same, find the total impedance of  
speakers connected in parallel by  
dividing the impedance of one  
speaker by the number of speakers.  
Remove about 1 inch of insulation from  
both ends of each wire. Then twist the  
exposed wire to secure all its strands.  
Connect the speaker wire to the amplifi-  
er by pressing down on the appropriate  
push terminal tab and inserting the end  
of the twisted wire into the terminal’s  
hole. Then release the tab to secure the  
wire.  
For example, if you want to connect  
two 8-ohm speakers in parallel,  
divide 8 (the impedance of one  
speaker) by 2 (the number of speak-  
ers) for a total speaker impedance  
of 4 ohms.  
You can connect one or more 4-, 8-, or  
16-ohm speakers, with or without trans-  
formers, between the amplifier’s output  
and the speakers’ input. To ensure  
equal volume from each speaker, all the  
connected speakers should have the  
same impedance rating.  
• If you connect more than two speak-  
ers using only series or only parallel  
connections, the total impedance  
might exceed the amplifier’s maxi-  
Speakers  
7
 
32-2002.fm Page 8 Friday, February 11, 2000 11:36 AM  
Speakers in Series  
One Speaker  
8Speaker  
Connect the speaker’s negative (–) ter-  
minal to the amplifier’s COM (common)  
terminal. Then connect the speaker’s  
positive (+) terminal to the amplifier’s  
terminal that matches the speaker’s im-  
pedance. For example, if you have an 8-  
ohm speaker, connect the speaker’s  
positive terminal to the amplifier’s 8-ohm  
terminal.  
Two 8Speakers  
1. To determine the total impedance of  
speakers connected in series, add  
the impedance of all the speakers.  
For example, if you want to connect  
two 8-ohm speakers in series, add 8  
(the impedance of one speaker)  
plus 8 (the impedance of the other  
speaker) for a total speaker imped-  
ance of 16 ohms.  
Two or More Speakers Without  
Transformers  
We recommend connections without  
transformers if the length of the connect-  
ing wires between the amplifier and the  
speakers is 50 feet or less.  
2. Connect the first speaker’s positive  
(+) terminal to the second speaker’s  
negative (–) terminal.  
When making connections without  
transformers, all the speakers must  
have the same impedance rating to en-  
sure equal volume from each speaker.  
When there is more than one speaker in  
a sound system, you must determine the  
total impedance of the speakers before  
you can make the correct connection.  
The total impedance of all the speakers  
must match one of the amplifier’s output  
terminals (4, 8, or 16).  
3. Connect the first speaker’s nega-  
tive (–) terminal to the amplifier’s  
COM terminal.  
4. Connect the second speaker’s posi-  
tive (+) terminal to the amplifier’s  
terminal that matches the total  
speaker impedance (16, in this  
example).  
8
Speakers  
 
32-2002.fm Page 9 Friday, February 11, 2000 11:36 AM  
Speakers in Parallel  
Series and Parallel Combined  
Two 8Speakers  
Four 8Speakers  
1. To determine the total impedance of  
speakers connected in parallel,  
divide the impedance of one  
speaker by the number of speakers.  
If you must hook up more than two  
speakers, you might have to use a com-  
bination of series and parallel connec-  
tions to get a total impedance that  
matches one of the amplifier’s terminals.  
For example, if you want to connect  
two 8-ohm speakers in parallel,  
divide 8 (the impedance of one  
speaker) by 2 (the number of speak-  
ers) for a total speaker impedance  
of 4 ohms.  
If you connect four 8-ohm speakers in  
series, the total impedance is 32 ohms  
(8 + 8 + 8 + 8 = 32). This exceeds the  
maximum rating.  
If you connect these speakers in paral-  
lel, the total impedance is 2 ohms (8 ÷ 4  
= 2). This falls below the minimum rat-  
ing.  
2. Connect the speakers’ negative (–)  
terminals together.  
3. Connect the speakers’ positive (+)  
terminals together.  
You can arrive at a proper total imped-  
ance by combining series and parallel  
connections.  
4. Connect the speakers’ negative (–)  
terminals to the amplifier’s COM ter-  
minal.  
1. Group speakers into pairs.  
5. Connect the speakers’ positive (+)  
terminals to the amplifier’s terminal  
that matches the total speaker  
impedance (4, in this example).  
2. Connect each pair of speakers in  
series.  
For example, the total impedance of  
each pair of 8-ohm speakers is 16  
ohms (8 + 8 = 16).  
3. Connect the pairs of speakers in  
parallel.  
Speakers  
9
 
32-2002.fm Page 10 Friday, February 11, 2000 11:36 AM  
4. To determine the total impedance of  
speakers connected in serial and  
parallel combined, divide the imped-  
ance of one pair of speakers by the  
number of pairs.  
• You can add or remove a speaker  
without having to recalculate the  
entire system’s impedance.  
• You can reduce signal loss when  
you use speaker wire over 50 feet  
long.  
For example, if you want to connect  
four 8-ohm speakers in serial and  
parallel combined, divide 16 (the  
impedance of one pair of speakers)  
by 2 (the number of speaker pairs)  
for a total speaker impedance of 8  
ohms.  
You need a separate transformer for  
each speaker.  
Line transformers have several connec-  
tors called taps.  
5. Connect the negative (–) terminals  
of all pairs of speakers to the ampli-  
fier’s COM terminal.  
6. Connect the positive (+) terminals of  
all pairs of speakers to the ampli-  
fier’s terminal that matches the total  
speaker impedance (8, in this  
example).  
Taps  
Multiple Speakers with  
Transformers  
The primary taps (on one side of the  
transformer) are the inputs and are rated  
in watts. The secondary taps (on the op-  
posite side of the transformer) are the  
outputs and are rated in ohms.  
For complex multiple-speaker arrange-  
ments that require many speakers and  
long runs of connecting wire, we recom-  
mend you use a line transformer (not  
supplied).  
Note: When running lengths of wire  
longer than 50 feet, use wire that is  
heavier than 16 gauge.  
Primary  
Taps  
Secondary  
Taps  
There are several advantages to using  
transformers.  
• You can connect speakers with dif-  
ferent impedances without causing  
differences in output between the  
speakers.  
10  
Speakers  
 
32-2002.fm Page 11 Friday, February 11, 2000 11:36 AM  
Cautions:  
• Before you connect the speakers, be sure the total wattage of the primary taps  
you intend to use does not exceed the amplifier’s maximum 40-watt output power  
rating.  
• Avoid multiple connections to the amplifier’s 70V and COM terminals.  
Follow these steps to make the connections.  
1. Connect a wire from the amplifier’s 70V terminal to each transformer’s primary  
tap that matches your speaker’s wattage rating. For example, if you will be con-  
necting a 2.5-watt speaker to a transformer, connect this wire to the 2.5 tap on  
that transformer’s primary side.  
2. Connect a wire from the amplifier’s COM terminal to the COM tap on each trans-  
former’s primary side.  
3. Connect a wire from the speaker’s positive (+) terminal to each transformer’s  
secondary tap that matches the speaker’s total impedance (4, 8, or 16 ). For  
example, if you are connecting an 8-ohm speaker to a transformer, connect this  
wire to the 8 tap on that transformer’s secondary side.  
4. Connect a wire from the speaker’s negative (–) terminal to the COM tap on each  
transformer’s secondary side.  
Speakers  
11  
 
32-2002.fm Page 12 Friday, February 11, 2000 11:36 AM  
ˆ Controls and Operation  
MICROPHONE 1 and 2 Inputs — Con-  
nect any standard dynamic microphone  
with a 1/4-inch plug.  
150Hz Equalizer Control — controls  
output for instruments in this very low  
range (such as an organ or a contrabas-  
soon). Too much bass makes music  
sound muddy and boomy, while too little  
makes it sound hollow and thin. Rotate  
the knob clockwise to enhance bass  
sounds or counterclockwise to reduce  
rumble, acoustic feedback, and other  
low-frequency disturbances.  
POWER Switch and Indicator — Press  
the bottom half of the switch to turn on  
the amplifier. The indicator lights. Press  
the top half of the switch to turn off the  
amplifier. The indicator goes off.  
MASTER VOLUME Control — Controls  
the overall loudness level of all sources.  
With the amplifier and the audio input  
source turned on (and set to play, if  
needed), set this control to its mid-range  
setting (5). Adjust this control again after  
adjusting the source mixing controls.  
1kHz Equalizer Control — controls the  
midrange frequencies (voice and instru-  
ments). Rotate the knob clockwise to  
bring the vocalist “up front,” or counter-  
clockwise to move the singer “back” into  
the sound mix.  
Caution: Do not raise the volume level  
too high. Doing so might overload the  
system.  
6kHz Equalizer Control — controls  
high frequencies, such as those gener-  
ated by cymbals, and can also act as a  
high-frequency noise filter. Rotate the  
knob clockwise to increase high fre-  
quencies, or counterclockwise if the  
sound becomes overbearingly harsh  
and strident.  
MIC1 and MIC2 Source Mixing Con-  
trols — Adjust the input level for each  
microphone to get the proper volume  
and balance.  
PHONO/AUX Source Mixing Control  
— Adjusts the input level of the PHONO  
or AUX/CD sound source for the best  
volume and balance.  
12  
Controls and Operation  
 
32-2002.fm Page 13 Friday, February 11, 2000 11:36 AM  
ˆ Troubleshooting  
If you should run into difficulties, check  
the wiring of the system. Are there any  
short circuits in the speaker wiring?  
Have you provided adequate ventila-  
tion? Did you calculate speaker imped-  
ance correctly?  
Be sure microphones and connecting  
cables are not defective.  
Be sure you are using large enough  
speaker wire. You should always use  
16-gauge (or larger) wire. The longer the  
run of speaker wire, the heavier the  
gauge should be.  
If you have feedback problems, reposi-  
tion your microphones and speakers, or  
adjust MASTER VOLUME to a lower set-  
ting.  
If the amplifier does not work at all,  
check the fuse on the rear panel. If it is  
blown, replace it with one of the same  
size and type (see “Replacing the Fuse”  
on Page 14).  
If you cannot solve the problem, contact  
your local RadioShack store for assis-  
tance.  
Troubleshooting  
13  
 
32-2002.fm Page 14 Friday, February 11, 2000 11:36 AM  
ˆ Care  
To enjoy your MPA-50 40-Watt PA Am-  
terclockwise until the fuse holder  
pops out.  
plifier for a long time:  
• Keep the amplifier dry. If it gets wet,  
wipe it dry immediately.  
3. Remove the fuse holder and replace  
the fuse.  
• Use and store the amplifier only in  
normal temperature environments.  
4. Slide the fuse holder back in place  
then, using a flat-blade screwdriver,  
push and turn the fuse holder’s cap  
fully clockwise to secure it.  
• Handle the amplifier gently and  
carefully. Don’t drop it.  
• Keep the amplifier away from dust  
and dirt.  
• Wipe the amplifier with a damp cloth  
occasionally to keep it looking new.  
Modifying or tampering with the amplifi-  
er’s internal components can cause a  
malfunction and invalidate its warranty.  
If your amplifier is not performing as it  
should, take it to your local RadioShack  
store for assistance.  
REPLACING THE FUSE  
The power fuse protects your amplifier  
from power (voltage or current) surges  
when operating it from an AC power  
source. If the POWER indicator does not  
light when you press POWER, check the  
fuse and replace it with one of the same  
size and type. (A spare fuse is included.)  
Follow these steps to replace the ampli-  
fier’s fuse.  
1. Unplug the amplifier’s power cord.  
2. Using a flat-blade screwdriver, push  
and turn the fuse holder’s cap coun-  
14  
Care  
 
32-2002.fm Page 15 Friday, February 11, 2000 11:36 AM  
ˆ Specifications  
Output Power at 1 kHz, 10% THD ............................................................................... 40 Watts  
Power Bandwidth at 1W, 10% THD, Auxiliary Input ............................................ 70 Hz–20 kHz  
THD at 2W, 1 kHz  
MIC1 .............................................................................................................................. 1%  
MIC2 .............................................................................................................................. 1%  
AUX/CD ......................................................................................................................... 1%  
PHONO ......................................................................................................................... 1%  
Input Sensitivity at 10% THD, 1 kHz  
MIC1 ........................................................................................................................ 2.5 mV  
MIC2 ........................................................................................................................ 2.5 mV  
AUX/CD .................................................................................................................. 150 mV  
PHONO ................................................................................................................... 3.5 mV  
Signal-to-Noise Ratio  
MIC1 .......................................................................................................................... 65 dB  
MIC2 .......................................................................................................................... 65 dB  
AUX/CD ..................................................................................................................... 70 dB  
PHONO ..................................................................................................................... 70 dB  
Frequency Response at 8 Ohms, 2W  
MIC1 ............................................................................................................. 70 Hz–20 kHz  
MIC2 ............................................................................................................. 70 Hz–20 kHz  
AUX/CD ........................................................................................................ 70 Hz–20 kHz  
PHONO .............................................................................. 100 Hz/12 dB (10 kHz/–13 dB)  
Equalizer Control Range at Each Band (Peak Point)  
150Hz....................................................................................................................... ±12 dB  
1kHz ........................................................................................................................ ±12 dB  
6kHz ........................................................................................................................ ±12 dB  
Crosstalk from AUX to PHONO ....................................................................... 40 dB (Nominal)  
Hum and Noise at 8 Ohms  
at Master Volume Minimum ....................................................................... 1 mV (Nominal)  
at Master Volume Maximum .................................................................... 50 mV (Nominal)  
Priority Terminals ............................................................................................... Normally Open  
Power Requirement ........................................................................................... 120V AC 60 Hz  
Dimensions (HWD) ......................................... 37/8 × 123/4 × 101/2 Inches (98 × 324 × 267 mm)  
Weight ............................................................................................................ 9 lb 10 oz (4.4 kg)  
Specifications are typical; individual units might vary. Specifications are subject to change and  
improvement without notice.  
Specifications  
15  
 
32-2002.fm Page 16 Friday, February 11, 2000 11:36 AM  
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 limitations on how long an implied warranty lasts or the exclusion or limita-  
tion of incidental 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  
12/99  
32-2002  
RadioShack  
A Division of Tandy Corporation  
Fort Worth, Texas 76102  
811081780C  
02A00  
Printed in China  
 

QSC Audio Car Amplifier PLX1802 User Guide
Quadra Fire Stove 7023 111E User Guide
Raymarine Scanner Radome Scanners User Guide
Roland Electronic Keyboard JUNO 2 User Guide
Roland Electronic Keyboard VR 700 User Guide
Samsung Flat Panel Television 452 User Guide
Sanus Systems Indoor Furnishings LL22 User Guide
SATO Printer LM400E User Guide
Sears Chipper 502493 User Guide
SEH Computertechnik Planer IC146 ETHER HP FL User Guide