Extron electronic MPA 401 manual Audio Inputs

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 may be labeled or (see the images to the right). The wiring and function are the same whichever way the product is labeled.

2

2

L	3	4
(SUMMED)		L(SUMMED) R
R

INPUTS

INPUTS

L (MONO) 3 4

R

L (MONO) R

BRCA 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.

C3.5 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.

Tip (+)

Sleeve ( )

RCA Connector

Tip (L)

Ring (R)

Sleeve ()

DBalanced 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 on page 6 for important information about connecting wires to captive screw connectors).

Tip	L
Sleeve
Tip
Sleeve	R

Unbalanced Stereo Input

L

Tip

Sleeve

R

Unbalanced Mono Input

3.5 mm TRS Connector

Tip	L
Ring
Sleeves
Tip
Ring	R
	Balanced Stereo Input
Tip	L
Ring
Sleeve
	R

Balanced Mono Input

MPA 401-70V and MPA 401-100V • Rear Panel and Cabling 6