owner’s manual
MINI STEREO AMPLIFIER
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FEATURES
WARNING:
shock hazard, do not expose this product to rain
or moisture.
To reduce the risk of fire or
CAUTION
RISK OF ELECTRIC SHOCK.
DO NOT OPEN.
!
CAUTION: TO REDUCE THE RISK OF
ELECTRIC SHOCK, DO NOT REMOVE
COVER OR BACK. NO USER-SERVICEABLE PARTS INSIDE. REFER SERVICING
TO QUALIFIED PERSONNEL.
This symbol is intended to alert
you to the presence of uninsulated dangerous voltage within
the product’s enclosure that might
be of sufficient magnitude to constitute a risk of electric shock. Do
not open the product’s case.
This symbol is intended to inform
you that important operating and
!
maintenance instructions are
included in the literature accompanying this product.
Your RCA SA-155 Stereo Mini Amplifier is
compact, yet it offers many of the same
features as a larger amplifier. The amplifier
includes three sets of input jacks t hat l et you
connect up to three separate sound sources,
such as a CD play er or tape deck, a
turntable, an d a t uner. The amplifier also
has a front panel,
1
/8-inch input jack th at le ts
you quickly connect a portable CD or ta pe
player.
The SA-155 is designed to be used
Note:
with the RCA TM-155 Mini Tuner.
Your amplifier also includes the following
features:
Mono Button
— lets you set th e amplifier
for monaural sound when you play a
monaural sound source.
1
/8-Inch Headphone Jack
— lets you
connect low-impedance stereo headphones
for private listening.
Tape-Out Jack
deck from a connected input source.
CER/MAG Switch
setting that matches your turntable’s
cartridge fo r the best results.
Tone and Balance Controls
control the sound’s tone and balance.
2002 RadioShack Corporation.
©
All Rights Reserved.
— lets you record to a tape
— lets you select the
— let you
MAKING CONNECTIONS
CONNECTING SPEAKERS
For best results, use a matched pair of
8-ohm speakers.
Caution:
connections, be sure the AC power cord is
not plugged in.
For speaker connecti ons, use a spea ker cabl e
with a phono plug on one end and the
appropriate connector on the other end.
This connection depends on the type of
speakers you have. Your local RadioShack
store sells a variet y of sp ea ker cables and
connectors for most types of speakers.
With Phono Jacks
If the speakers have phono jacks, insert one
speaker cable’s p lu g into the right speaker’s
phono jack. T hen insert the cable’s other
plug into the amplifier’s
phono jack.
Before you make speaker
SPEAKERS R
Repeat Steps 1 and 2 to connect the left
speaker to the amplifier’s
terminal.
SPEAKERS L
CONNECTING AUDIO
SOURCES
Use standard, shielded audio cables for
connecting audio sources such as a tuner/
amplifier, tape deck, or CD player.
Connecting a Tuner
Connect the tuner’s left and right output
L
jacks to the amplifier’s
input jacks.
and
R TUNER
Repeat this process for the left speaker.
Without Phono Jacks
If your speakers do not have phono jacks,
use regular two-conductor speaker wire
(available at your local RadioShack store)
with a phono plug on o ne en d. F ollow thes e
steps to connect this type of speaker.
1. Connect the wire’s two separate
conductors to th e right speaker’s
positive (+) and negative (–) ter mi na ls.
2. Connect the wire’s phono plug to the
amplifier’s
SPEAKERS R
terminal.
Connecting a Turntable
Connect the turnta ble ’s le ft a nd r igh t outp ut
L
jacks to the amplifier’s
input jacks. If the turntable has a separate
ground wire (usually black or green),
connect it to the amplif ie r’s
screw.
If the turntable has a magnetic cartridge, set
CER/MAG
ceramic cartridge, set
to
MAG
. If it has a crystal or
CER/MAG
(See the turntable owner’s manual to verify
the type of cartridge).
R PHONO
and
PHONO GND
to
CER
.
If you want to connect an other sound source
(such as a turntable) to the amplifier and
L
record to the t ape d eck, c onnect the
TAPE OUT
jacks to the tape deck’s AUX IN,
and
R
LINE IN, or TAPE IN jacks.
You can also connect a portab le CD player
or tape player to the
1
/8-inch
CD/TAPE
input jack on the amplifier’s front panel.
L
Using this jack disables the
Note:
CD/TAPE
jacks.
and
R
CONNECTING TO POWER
Connecting a Tape Deck or
CD Player
Connect a tape deck ’s or CD playe r’s left and
L
right output jacks to the
input jacks on the amplifier’s back panel.
R CD/TAPE
and
Caution:
Before you plug the amplifier’s AC
cord into a standard AC outlet, be sure the
power is off (
After you make all connections, plug the
POWER
is in the out position).
amplifier’s AC cord into a standard AC
outlet.
OPERATION
1. Turn
2. Press
3. Set
VOLUME
POWER
TUNER CD/TAPE PHONO
MIN
to
.
. The red in dicator lights.
to the
source you want to listen to or record
from.
4. If the sound source is monaural, pre ss
MONO
in
. If the sound source is stereo,
leave the button in the out position.
• 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 volume level, so a
volume level that does not cause
discomfort might still damage your
hearing.
The amplifier mutes the speak ers
Note:
when you connect headphones. If you
want to listen through the speakers
again, unplug the headphones.
6. Start the sound source.
7. Adjust
VOLUME, TONE
BALANCE
, and
as desired.
8. When you finish using the amplifier,
POWER
press
. The indicator turns off.
The mono button setting also
Note:
affects tape r ecording.
5. For private listening, connect a
headphone’s
amplifier’s
Caution:
1
/8-inch mini plug into the
PHONES
jack.
To protect your hearing,
follow these guidelines when you use
headphones:
• Set the volume to the lowest setting
before you begin listening . After you
begin listening, adjust the volume to
a comfortable level .
TROUBLESHOOTING
If you have a problem with the amplifier, first be sure all connections are correct and secure. If
the problem continues, check the following troubleshooting information for a solution.
Problem Solution
No sound from
the speakers
Headphones are connected to the amplifier. Unplug the headphones.
The source sele ctor i s set to the wrong audio source. Set the sele ctor t o
the correct sour ce.
VOLUME
is set too low. Turn
VOLUME
clockwise.
If you connect a CD or tape player to the back panel and another to
the front panel, the back panel jacks are disabled. Disconnect the
player from the fro nt panel jacks.
No stereo sound
MONO
is pressed in. Press
BALANCE
is set all the way to one side. Adjust the control.
MONO
to the out position.
The speaker conn ections are incorrect. Turn off the amplifier an d
correct the connections.
Distorted or
weak sound
VOLUME
is set too high or too low.
The speaker conn ections are incorrect. Turn off the amplifier an d
correct the connections.
MAG/CER
The
MONO
is pressed in while you listen to a stereo source. Press
setting is incorrect. Set it to the correct position.
to the out position.
Cannot record The connections be twe en the tape deck and the amplifier ’s
TAPE OUT
jacks are incorrect or loose. Turn off the amplifier and
correct the connections.
MONO
L
and
R
The source sele ctor i s set to the wrong audio source. Set the sele ctor t o
the source you want to record.
If you connect a CD or tape player to the back panel and another to
the front panel, the back panel jacks are disabled. Disconnect the
player from the fro nt panel jacks.
This amplifier has b ee n m anu fa ctured to the specifications of RadioShack and is covered by a
limited warranty from RadioShack. If your amplifier is not operating as it should, take it to
your local RadioShack store or call 1-800-THE-SHACK for assistance.
CARE
To enjoy your RCA SA-155 Stereo Mini
Amplifier for a long time:
• Keep the amplifier dry. If it gets wet,
wipe it dry imm ediately.
• Use and store the amplifier only in
normal temperature environments.
• Handle the amplifier gently and
carefully. Do not 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 amplifier’s
internal components can cause a
malfunction and invalidate its warranty.
SPECIFICATIONS
Power Requirements............................................................... 120 Volts AC, 60 Hz, 25 Watts
Output Powe r
(1% Distortion, 1 KHz, Both Channels Driven) ....................... 1.8 Watts Per Channel (RMS)
Frequency Response ........................................................................................ 20–25,000 Hz
Input Sensitivity:
Phono ..... .. .................................... .. .... . .. .. ............. 2.5 mV (Magnetic); 200 mV (C era m i c)
Tuner .................................................................................................................... 160 mV
CD/Tape ................................................................................................................ 160 mV
Tape Output .............................................................................................................. 150 mV
Speaker Impedance ......................................................................................... 8 to 16 Ohms
Tone Control Response ........................................................................................... –18.0 dB
Crosstalk at CD/Tape Input (@ 2 WattsPower) .............................................. 50 dB @ 1 kHz
Dimensions (H
D) ................................ 21/2 × 91/4 × 67/8 Inches (6.4 × 23.6 × 17.5 cm)
W
×
×
Specification s are typic al ; indiv id ual uni ts m ight vary . Spe ci fic ation s are subje ct to cha nge and
improvement without notice.
Limited Two-Year Warranty
This product is warranted by RadioShack against manufacturing defects in material and workmanship under normal use for
two (2) years from the date of purchase from RadioShack company- owned stores and authorized RadioShack franchisees
and dealers. EXCEPT AS PROVIDED HEREIN, Radio Shack MAKES NO EXPR ESS WARRANTIES AND ANY IMPLIED
WARRANTIES, INCLUDING THOSE OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ARE LIM-
ITED IN DURATION TO THE DURATION OF THE WRITTEN LIMITED WARRANTIES CONTAINED HEREIN. EXCEPT AS
PROVIDED HEREIN, RadioShack SHALL HAVE 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, INCLUD-
ING, BUT NOT LIMITED TO, ANY DAMAGES RESULTING FROM INCONVENIENCE, LOSS OF TIME, DATA, PROP-
ERTY, 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 limitations on how long an implied warranty lasts or the exclusion or limitation of incidental or con-
sequential 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, unless otherwise provided by law: (a) correct the de-
fect by product repair without charge for parts and la bor; (b) re place the product with one of the same or similar design; o r
(c) refund the purchase price. All replaced parts and products, and products on which a refu nd is made, become the prop -
erty of RadioShack. New or reconditioned parts and products may be used in the performance of warranty service. Re -
paired 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, im-
proper 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 Facil-
ity; (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.
811082210B 31-5000
01A02 Printed in China
RadioShack Customer Relations, 200 Taylor Street, 6th Floor, Fort Worth, TX 76102
12/99
RadioShack Corporation
Fort Worth, Texas 76102
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