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 amplifier’s 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 turntable’s
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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