Radio Shack 32-2055 quick start Preset the Audio Input Source, Presetting the Amplifier

250-Watt · Stereo

32-2055

Quick Start Guide

PA Amplifier

Step 3: Connecting Your Amplifier

Connect up to	Connect up to	MIC 4/
4 microphones	4 microphones	PHONO
with 3 pin	with ¼”	Switch
XLR plug to	(6.35mm) plug	Select MIC 4
Balanced	to Unbalanced
		or PHONO
Microphone	Microphone
		input.
	Inputs.
Inputs.

Connect stereo input sources (CD or DVD player, TV, etc.) with ¼” (balanced) audio cable to Stereo Input Jacks.

Connect an equalizer or other external processor to EQ IN/OUT Jacks.

You can also connect a tape deck to the EQ OUT jack for recording.

1. Connect your input source.

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).

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.

Step 1: Selecting a Location

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.

Step 2: Preset the Controls

Connect low-level audio input source (e.g. Turntable) to Phono Input Jacks

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.

Connect an extra amplifier to MIX BUS Jack

Use a shield cable with phono plugs at each end.

Connect an auxiliary sound source (CD, tape deck or tuner) to Audio Input Jacks.

Use a shield cable with phono plugs at each end.

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).

To bridge the amplifier’s channels:

•Speakers connected to the same channel (A or B) are part of a pair and must be of the same impedance.

•Speakers connected to different channels (A or B) are not part of a pair and can be different impedance.

3. Connect Power

Plug the power cord into a standard AC outlet.

Preset the Audio Input Source

Step 4: Using Your Amplifier

Audio Device	Control	Setting
Turntable	Power	Flat
Tape Deck	Power	Flat
CD Player	Power	Flat
Amplifier	Power	Flat
Receiver	Tone	Off

Presetting the Amplifier

Before you make any connections, be sure the amplifier is turned off and AC power cord is not plugged in.

Mic, CD/AUX, and LEFT / RIGHT volume controls should be set to minimum.

Illuminated Power Switch

Lights up when you turn on the switch.

MIC 1, MIC 2, and MIC 3, MIC 4/PHONO and CD/AUX

Adjust volume for the connected microphones, turntable, CD or auxiliary sound source.

FEEDBACK

FILTER

Turn to control audio feedback.

Left/Right speakers Volume Control

Turn to regulate volume of left and right speakers.

1.Start the input sound source.

2.Make sure LEFT and RIGHT volume control on the the amplifier are set to MIN.

3.Press POWER to turn on the amplifier.

4.Rotate LEFT and RIGHT volume controls to their middle positions.

5.One at a time, adjust MIC1, MIC2, MIC3, MIC4/ PHONO, and CD/AUX to the desired volume and balance.

If you hear feedback after you adjust these controls, turn FEEDBACK FILTER clockwise until the noise disappears.

6.Adjust LEFT and RIGHT volume controls to the desired volume level after you find your desired balance.

©2008. RadioShack Corporation.	07A08
All rights reserved. RadioShack and RadioShack.com are trademarks used by RadioShack Corporation.	32-2055 A

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