Audio Inputs - Extron electronics MPA 401-70V User Manual

Audio Inputs

Use the rear panel receptacles (see figure at right)
to connect audio sources to the amplifier. Wire the
connectors as shown below. The balloon numbers refer
to the figure to the right.
NOTE: The ground pins of the input receptacles
b
c
d
may be labeled or (see the images to the
right). The wiring and function are the same
whichever way the product is labeled.
RCA input receptacles — These receptacles accept
unbalanced, line level audio signals. The input can be stereo,
using two RCA connectors, or mono, using a single RCA
connector plugged into the left (Summed) receptacle.
If unused, the receptacles automatically terminate to lower the
noise floor.
3.5 mm TRS stereo input receptacle — This input also
accepts unbalanced, line level audio signals through a
3.5 mm tip ring sleeve (TRS) stereo connector. If unused, the
receptacle automatically terminates to lower the noise floor.
Balanced or unbalanced input
receptacle — This 5-pole 3.5 mm
captive screw receptacle accepts
line level, balanced or unbalanced,
mono or stereo audio signals (see
the attention and the note
page 6 for important information
about connecting wires to captive
screw connectors).
MPA 401-70V and MPA 401-100V • Rear Panel and Cabling
Tip
Sleeve
Tip
Sleeve
Unbalanced Stereo Input
on
Tip
Sleeve
Unbalanced Mono Input
3 4
L
2
(SUMMED)
L
(SUMMED) R
R
INPUTS
INPUTS
L
(MONO)
3 4
2
R
L R
(MONO)
Tip (+)
Sleeve ( )
RCA Connector
Tip (L)
Ring (R)
Sleeve ( )
3.5 mm TRS Connector
Tip
Ring
Sleeves
Tip
Ring
Balanced Stereo Input
Tip
Ring
Sleeve
Balanced Mono Input
6