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Features

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Features

Your Public Address Amplifier gives you the
versatility and power you need in a profes-
sional sound system. Its wide frequency re-
sponse easily handles amplification of voice
and music. Use it in meeting halls and audi-
toriums, at sports events, in schools, and in
the office for paging systems — anywhere
you need to deliver special announcements
with excellent sound.

The amplifier (if bridged) produces up to 350
watts of clean, powerful sound with minimum
distortion.

Your amplifier includes these features:

1050000 Hz Frequency Response

Built-In Cooling Fan — helps protect the
amplifier by reducing its internal tempera-
ture.

Two Mounting Options — you can mount
the amplifier in a standard-sized audio equip-
ment rack or on a desk, shelf, or table.

2 Lighted VU Meters — measure the ampli-
fier’s output for each channel in decibels.

Left and Right Output Level Gain Controls
— let you adjust the overall sound level on
the left and right channels.

Clipping Indicator — lights if a sound
source signal overdrives the amplifier.

Phones Jack — lets you connect head-
phones so you can listen privately.

Bridging Capability — you can combine the
amplifier’s two channels and use the amplifi-
er with only one channel, producing a total of
350 watts.

Meter Range Select Switch — lets you con-
trol the meter’s sensitivity.

Input Jacks —let you connect a variety of
audio input sources for music and special ef-
fects.

A/B SPEAKER 

Switches — let you select the

speakers you want to use with the amplifier.

STEREO/MONO 

Switch — lets you select the

output type; stereo or mono (bridged).

Binding Post Terminals — let you easily
connect wires directly to the amplifier.

Switched AC Outlet — lets you power other
devices by plugging them into the back of the
amplifier.

  

This symbol is intended to alert you to
the presence of uninsulated danger-
ous voltage within the product’s enclo-
sure that might be of sufficient
magnitude to constitute a risk of elec-
tric shock. Do not open the product’s
case.

This symbol is intended to inform you
that important operating and mainte-
nance instructions are included in the
literature accompanying this product.

CAUTION

RISK OF ELECTRIC SHOCK.

DO NOT OPEN.

CAUTION

: TO REDUCE THE RISK OF

ELECTRIC SHOCK, DO NOT REMOVE
COVER OR BACK. NO USER-SERVICE-
ABLE PARTS INSIDE. REFER SERVICING
TO QUALIFIED PERSONNEL.

WARNING: To reduce the risk of fire or
shock hazard, do not expose this product
to rain or moisture.

!

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Summary of Contents for 04A00

Page 1: ...Owner s Manual Please read before using this equipment 250 Watt Stereo PA Amplifier...

Page 2: ...e Input Source 6 Connecting Speakers 6 Preparing the Speaker Wires 6 Unbridged Connection 6 Bridged Connection 7 Using the Switched AC Outlet 7 Connecting Power 7 Using Your Amplifier 8 Using the Mete...

Page 3: ...idging Capability you can combine the amplifier s two channels and use the amplifi er with only one channel producing a total of 350 watts Meter Range Select Switch lets you con trol the meter s sensi...

Page 4: ...helf or table Before you use your amplifier be sure you place it in a location with ade quate ventilation Do not put it on thick car peting which can restrict air flow or near a heat source such as a...

Page 5: ...m plifier to this amplifier Cautions You can connect audio mixers or pream plifiers to either the balanced or unbal anced jacks Do not connect input sources to both jacks at the same time Before you m...

Page 6: ...ity are red or have a plus symbol and termi nals with negative polarity are black or have a minus symbol Phasing is correct when you connect to and to Preparing the Speaker Wires Use the shortest leng...

Page 7: ...other end of the speaker s positive and negative wires to the amplifier s red SPEAKERS LEFT and SPEAKERS RIGHT terminals as shown here Note SPEAKERS RIGHT on the amplfier is used as a negative termi n...

Page 8: ...to the extreme right press METER RANGE to the out position to maintain a 0 dB gain for the meter Or press METER RANGE to the in position to allow a 20 dB gain CLIP INDICATOR The CLIP indicator on the...

Page 9: ...lly to keep it looking new Modifying or tampering with the PA Amplifi er s internal components can cause a mal function and might invalidate its warranty If your PA Amplifier is not performing as it s...

Page 10: ...en when it is operating properly To determine whether your amplifier is caus ing the interference turn off your amplifier If the interference goes away your amplifier is causing it Try to eliminate th...

Page 11: ...Harmonic Distortion 0 1 at 80 Watts Frequency Response 10 Hz 50 kHz 3 dB Input Sensitivity 0 775 V Signal to Noise Ratio 90 dB A weighted Speaker Impedance A B 4 16 ohms A B 8 16 ohms Bridged 8 16 ohm...

Page 12: ...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...

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