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
2
L | R |
3 4
Figure 4. Audio Inputs
BRCA unbalanced stereo input connectors — 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 receptacle.
If unused, the receptacles automatically terminate to lower the noise floor.
C3.5 mm unbalanced stereo input jack — 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.
Tip (+)
Sleeve ( ) 
RCA Connector
Tip (L)
Ring (R)
Sleeve (
)
3.5 mm TRS Connector
DCaptive screw balanced or unbalanced audio input connector — This
Tip | L |
| |
Sleeve |
|
Tip |
|
Sleeve | R |
Unbalanced Stereo Input
Tip | L |
Ring | |
Sleeves |
|
Tip |
|
Ring | R |
Balanced Stereo Input
See the attention (on page 5) and | L | Tip | L |
note (on page 5) for important | Tip |
| |
Ring |
| ||
information about connecting wires to | Sleeve | Sleeve |
|
R |
| ||
| R | ||
captive screw connectors. | Unbalanced Mono Input |
| Balanced Mono Input |
|
|
Depending on the position of the
front panel toggle switch (see figure 8 on page 10), the right and left channels may be output as a stereo signal or as a dual mono signal. See Audio Output on page 9 for more information.
MPA 152 Plus • Panels and Cabling | 6 |