Audio Inputs - Extron electronics MPA 152 Plus User Manual

Audio Inputs

Use the rear panel receptacles (see figure 4) to connect audio sources to the amplifier. Wire the connectors as
shown below.
INPUTS
L
R
B B B
Figure 4. Audio Inputs
RCA unbalanced stereo input connectors — These receptacles accept unbalanced,
B
line level audio signals. The input can be stereo, using two RCA connectors, or mono,
using a single RCA connector plugged into the left receptacle.
If unused, the receptacles automatically terminate to lower the noise floor.
3.5 mm unbalanced stereo input jack — This input also accepts unbalanced, line
C
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.
Captive screw balanced or unbalanced audio input connector — This 5-pole 3.5
D
mm captive screw receptacle accepts line level, balanced or unbalanced, mono or
stereo audio inputs.
Tip
Sleeve
Tip
Sleeve
Unbalanced Stereo Input
ATTENTION:
•
The length of the exposed wires in the stripping process is critical. The ideal length is 3/16 inches (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.
•
La longueur des câbles exposés est primordiale lorsque l'on entreprend de les dénuder. La longueur
idéale est de 5 mm (3/16 inches). S'ils sont trop longs, les câbles exposés pourraient se toucher et
provoquer un court-circuit. S'ils sont trop courts, ils peuvent être tirés facilement, même s'ils sont
correctement serrés par les borniers à vis.
NOTE: Do not tin the wires. Tinned wire does not hold its shape and can become loose over time.
Depending on the position of the front panel toggle switch
may be output as a stereo signal or as a dual mono signal. See
R
L
C C C D D D
Tip
Ring
Sleeves
Tip
Ring
Balanced Stereo Input
Tip
Sleeve
Unbalanced Mono Input
(figure 8, , on page 10), the right and left channels
B
Audio Output
MPA 152 Plus • Panels and Cabling
Tip (+)
Sleeve ( )
RCA Connector
Tip (L)
Ring (R)
Sleeve ( )
3.5 mm TRS Connector
Tip
Ring
Sleeve
Balanced Mono Input
(see page 9) for more information.
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