Radio Shack MPA-125 Manual Do Utilizador
3
Features
ˆ
Features
Your RadioShack MPA-125 100-Watt PA
Amplifier gives you the versatility and power
you need in a professional sound system. Its
wide frequency response easily handles am-
plification of voice and music. Use it in meet-
ing halls and auditoriums, at sports events, in
schools, and in the office for paging systems
– anywhere you need to deliver special an-
nouncements with excellent sound.
Amplifier gives you the versatility and power
you need in a professional sound system. Its
wide frequency response easily handles am-
plification of voice and music. Use it in meet-
ing halls and auditoriums, at sports events, in
schools, and in the office for paging systems
– anywhere you need to deliver special an-
nouncements with excellent sound.
Your amplifier includes these features:
100-Watt Output — provides powerful audio
output for many types of sound installations.
output for many types of sound installations.
60–25000 Hz Frequency Response — pro-
vides wide-ranging response for true audio
reproduction.
vides wide-ranging response for true audio
reproduction.
Lighted VU Meter — measures the amplifi-
er’s output in decibels.
er’s output in decibels.
Two Mounting Options — you can mount
the amplifier in a standard-sized audio equip-
ment rack or on a desk, shelf, or table.
the amplifier in a standard-sized audio equip-
ment rack or on a desk, shelf, or table.
Clipping Indicator — lights when a sound
source signal exceeds its mixing control set-
ting.
source signal exceeds its mixing control set-
ting.
Overload Protection — automatically inter-
rupts the amplifier’s power and lights an indi-
cator if the amplifier gets too hot due to
power overload.
rupts the amplifier’s power and lights an indi-
cator if the amplifier gets too hot due to
power overload.
Four Microphone Input Jacks — you can
connect up to four balanced or unbalanced
microphones to the amplifier.
connect up to four balanced or unbalanced
microphones to the amplifier.
CD/Auxiliary Input Jack — you can connect
a variety of audio input sources for music
and special effects.
a variety of audio input sources for music
and special effects.
Phones Jack — you can connect head-
phones so you can hear the mixed audio in
privacy.
phones so you can hear the mixed audio in
privacy.
Master Volume Control — lets you adjust
the overall sound level.
the overall sound level.
EQ IN/OUT Switch — lets you connect and
use an equalizer with the amplifier.
use an equalizer with the amplifier.
Push-Terminal Connectors — let you easi-
ly connect wires directly to the amplifier.
ly connect wires directly to the amplifier.
Five Individual Source Mixing Controls —
let you mix connected sound sources individ-
ually or all at the same time.
let you mix connected sound sources individ-
ually or all at the same time.
Feedback Filter — lets you control audio
feedback.
feedback.
Read this manual carefully. It describes vari-
ous speaker connections to help you select
the best arrangement for your amplifier and
connected equipment, and explains how to
use the amplifier.
ous speaker connections to help you select
the best arrangement for your amplifier and
connected equipment, and explains how to
use the amplifier.
WARNING:
T
o reduce the risk of fire or shock haz-
ard, do not expose this product to rain or moisture.
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.
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 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.
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.
that important operating and mainte-
nance instructions are included in the
literature accompanying this product.
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32-2003.fm Page 3 Tuesday, March 28, 2000 10:45 AM