Radio Shack Stereo Amplifier 32 2055 User Guide

32-2055  
250-Watt · Stereo  
PA Amplifier  
Step 3: Connecting Your Amplifier  
Quick Start Guide  
1. Connect your input source.  
Connect up to  
4 microphones  
with ¼”  
(6.35mm) plug  
to Unbalanced  
Microphone  
Inputs.  
Connect an equalizer or other  
external processor to EQ  
IN/OUT Jacks.  
Connect up to  
4 microphones  
with 3 pin  
XLR plug to  
Balanced  
MIC 4/  
PHONO  
Switch  
Connect stereo  
input sources (CD  
or DVD player,  
TV, etc.) with ¼”  
(balanced) audio  
cable to Stereo  
Input Jacks.  
You can connect optional components, such as  
microphones, tuner, turntable, audio mixer, preamplifier,  
or CD player to your amplifier to expand your system.  
To prevent hum and other noise, use low-capacitance  
shielded cable (not supplied, available at your local  
RadioShack store or at www.radioshack.com).  
Select MIC 4  
or PHONO  
input.  
You can also connect a tape  
deck to the EQ OUT jack for  
recording.  
Microphone  
Inputs.  
Note: This amplifier is equipped with both stereo phono  
input and ¼-inch (6.35 mm) jacks. The ¼-inch input jacks  
on the top are stereo while the others are left and right  
mono.  
2. Connect your speakers.  
Connect your speaker wire to the speaker terminals  
matching their polarities, the positive (+) speaker wire to  
the positive terminal (red) and the negative (–) speaker  
wire to the negative speaker terminal (black).  
Step 1: Selecting a Location  
To bridge the amplifiers channels:  
Before you use your amplifier, be sure to place it on a  
surface with adequate ventilation. Do not put it on thick  
carpeting, which can restrict air flow, or near a heat  
source such as a heat vent or radiator, which can cause it  
to overheat.  
Speakers connected to the same channel (A or B) are  
part of a pair and must be of the same impedance.  
Connect low-level audio input source (e.g.  
Turntable) to Phono Input Jacks  
Connect an extra  
amplifier to MIX  
BUS Jack  
Connect an auxiliary sound  
source (CD, tape deck or  
tuner) to Audio Input Jacks.  
Speakers connected to different channels (A or B) are  
not part of a pair and can be different impedance.  
If you connect a low-level audio input source to  
the PHONO jacks, set MIC4/PHONO to PHONO.  
To avoid a low-level hum, connect your turntables  
ground wire (usually black or green) to the GND  
terminal on the amplifier.  
Use a shield cable with  
phono plugs at each end.  
Use a shield cable  
with phono plugs at  
each end.  
3. Connect Power  
Plug the power cord into a standard AC outlet.  
Step 2: Preset the Controls  
Preset the Audio Input Source  
Step 4: Using Your Amplifier  
Audio Device  
Turntable  
Control  
Power  
Power  
Power  
Power  
Tone  
Setting  
Flat  
1. Start the input sound source.  
Illuminated  
Power Switch  
MIC 1, MIC 2, and MIC 3, MIC 4/PHONO  
and CD/AUX  
FEEDBACK  
FILTER  
Left/Right speakers  
Volume Control  
2. Make sure LEFT and RIGHT volume control on the the  
amplifier are set to MIN.  
3. Press POWER to turn on the amplifier.  
Tape Deck  
CD Player  
Amplifier  
Flat  
Lights up when  
you turn on the  
switch.  
Adjust volume for the connected  
microphones, turntable, CD or auxiliary  
sound source.  
Turn to control  
audio feedback.  
Turn to regulate volume of  
left and right speakers.  
Flat  
Flat  
4. Rotate LEFT and RIGHT volume controls to their  
Receiver  
Off  
middle positions.  
5. One at a time, adjust MIC1, MIC2, MIC3, MIC4/  
PHONO, and CD/AUX to the desired volume and  
balance.  
Presetting the Amplifier  
Before you make any connections, be sure the amplifier is  
turned off and AC power cord is not plugged in.  
If you hear feedback after you adjust these controls,  
turn FEEDBACK FILTER clockwise until the noise  
disappears.  
Mic, CD/AUX, and LEFT / RIGHT volume controls should  
be set to minimum.  
6. Adjust LEFT and RIGHT volume controls to the  
desired volume level after you find your desired  
balance.  
07A08  
©2008. RadioShack Corporation.  
A
32-2055 A  
All rights reserved. RadioShack and RadioShack.com are trademarks used by RadioShack Corporation.  
Printed in China  
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