Connecting A Turntable; Connecting An Auxiliary Sound Source; Connecting The Mix Bus Jack; Connecting An Equalizer - Radio Shack 32-2055 User Manual

The Basics
Balanced
Microphone
Jacks
• If your microphone cord is longer than 20 feet (6
NOTES
meters), we recommend that you connect it to a
balanced jack to reduce signal hum.
• If you connect a microphone to both balanced and
unbalanced jacks for MIC1, MIC2, MIC3, or MIC4,
the microphone you connect to the unbalanced
jack has priority.
• If you connect a microphone to either MIC4 jack,
set MIC4/PHONO on the back of the amplifi er to
MIC4.

connecting a turntable

You can connect a low-level audio input source (such as a
magnetic cartridge turntable) to the L PHONO and R PHONO
jacks on the back of the amplifi er. If you connect a low-level
audio input source to the PHONO jacks, set MIC4/PHONO
on the back of the amplifi er to PHONO. To avoid a low-level
hum, connect your turntable's ground wire (usually black or
green) to the GND terminal on the amplifi er.
PHONO
Input Jacks
MIC 4/
PHONO
Switch
Unbalanced
Microphone
Jacks
GND
Terminal
14

connecting an auxiliary sound source

You can connect any high-level sound source, such as a CD
player, tape deck, or tuner, to the CD/AUX jack on the back of
the amplifi er.
CD/AUX
Jack

connecting the MIX BUS jack

You can connect another MPA-250 to double the size of your
PA system. You can then use up to eight microphones (or six
microphones and two turntables) and two auxiliary sound
sources.
Use a shield cable with phono plugs at each end. Connect
the cable between the MIX BUS jacks on the back of the two
amplifi ers. For best results, do not use cable longer than 1.8
MIX BUS
Jack
meters (6 feet).

connecting an equalizer

You can connect an equalizer or other external signal
processor to the EQ IN and EQ OUT jacks on the back of the
amplifi er.
You can also connect a tape deck to the EQ OUT
NOTE
jack for recording.
The EQ IN/OUT jacks handle the signal from an
outside equalizer. They do not handle the signal
from this equalizer's stereo INPUT jacks.
15
The Basics
EQ IN/OUT
Jacks