Filter
Top Products
MPA 152 Amplier • Installation
2-11
Audio inputs
INPUTS
L
R
L
R
Figure 2-7 — Audio inputs
RCA connectors — Two connectors
(left and right) accept
unbalanced, line level audio
signals. The input can be
stereo (using two RCA jacks)
or mono (using a single RCA
jack plugged into the left/
mono socket). If unused,
the connectors automatically
terminate to lower the noise
oor.
3.5 mm TRS connector — This
connector accepts unbalanced,
line level audio signals. If
unused, the connector
automatically terminates to
lower the noise oor.
Captive Screw connector — This
5-pole, 3.5 mm captive screw
input accepts balanced or
unbalanced, mono or stereo, line
level signals.
N
The length of the exposed wires in the stripping process
is critical. The ideal length is 3/16” (5 mm). Any longer
and the exposed wires may touch, causing a short circuit
between them. Any shorter and the wires can be easily
pulled out even if tightly fastened by the captive screws.
C
Do not tin the wires. Tinned wire does not hold its
shape and can become loose over time.
The three left channel inputs (RCA, TRS and captive screw) and
three right channels are mixed to provide a single left channel
output. The three right channel inputs are mixed to provide a
single right channel output.
Depending on the position of the front panel toggle switch,
the right and left channels may be output as a stereo signal, or
summed and output as a dual mono signal.
Tip (+)
Sleeve ( )
RCA Connector
Sleeve ( )
Ring (R)
Tip (L)
3.5 mm Stereo
Plug Connector
Balanced audio
Tip
Ring
Tip
Ring
L R
Sleeves
Unbalanced audio
Tip
Sleeve
Sleeve
Tip
L R