Rear Panel Features, Power input | Extron electronic MPA 122

Installation and operation, cont’d

On the side mounting plates, devices are typically mounted on the outside of the bracket. On the front mounting plate, devices are typically mounted on the inside of the bracket.

The front mounting plate is 1/4" taller than the side plates. This size helps ensure the accessibility of buttons or connectors.

3.	Affix the black rubber pad to the mounting plate.
4.	Place the U-bolt around the ceiling pole and insert the two
	legs of the U-bolt through the slotted holes on the
	bracket’s mounting plate and then through the slotted
	holes on the backing brace.

For a typical (1.5" to 2.0" diameter) pole — The supplied

U-bolt fits a typical ceiling pole.

For a smaller or larger pole — Locally obtain a U-bolt that fits the ceiling pole. The slotted holes on the bracket will accommodate a U-bolt for pole sizes from 1.0" to 2.5" in diameter.

5.	Secure the bracket to the U-bolt with the included hex
	nuts, washers, and lock washers.

Rear Panel Features

INPUTS		MPA 122
C	US	OUTPUTS
		4/8 Ohms

POWER

REMOTE

12V	R	L	R	10V	L	R
12V		L	R	10V	L	R
3A MAX				VOL/MUTE
1	2	3	4	5		6

Figure 2-5 — MPA 122 back panel

Power input

1Power connection — Plug the external 12 VDC power supply into this connector. The power supply is included with the unit.

To verify the polarity before connection, plug in the power supply with no load and check the output with a voltmeter.

CAUTION	When connecting the power supply, voltage polarity
	is extremely important. Applying power with
	incorrect voltage polarity could damage the power
	supply and the interface. Identify the power cord
	negative lead by the ridges on the side of the cord.
Smooth	Ridges
	Ridges
A	A
	SECTION A–A
	0.2” (5 mm) MAX

Power Supply

Output Cord

Captive Screw

Connector

Figure 2-6 — Power connector wiring

Do not tin the stripped power supply leads before installing the captive screw connector. Tinned wires are not as secure in the captive screw connectors and could pull out.

The two power cord wires must be kept separate while the power supply is plugged in. Remove power before continuing.

Audio inputs

There are three choices of input connectors (RCA, 3.5 mm stereo, and captive screw) available on the rear panel for adapter-free connections.

Connecting more than one input signal at one time will result in audio mixing.

2RCA input connector — Plug an RCA audio source to this line level input.

33.5 mm stereo input — Plug a 3.5 mm audio micro cable into

this stereo jack.

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MPA 122 • Installation and Operation

2-7

MPA 122 specifications

Extron Electronics is known for its innovative solutions in the field of professional AV systems, and among its comprehensive range of products, the MPA 122 stands out as a highly versatile audio amplifier. Designed to deliver clear and powerful audio in various applications, the MPA 122 is particularly well-suited for installations in conference rooms, classrooms, and other environments where high-quality sound reinforcement is essential.

One of the main features of the Extron MPA 122 is its ability to deliver 2-channel power, with output capabilities of 2 x 60 watts into 4-ohm loads. This dual-channel setup allows for extensive variances in configuration, catering to both stereo and monaural applications. Users can leverage the compact design of the MPA 122, which takes up minimal rack space while providing ample audio output.

The MPA 122 incorporates Extron's advanced Class D amplifier technology, which ensures high efficiency and low power consumption while still delivering impressive sound quality. This technology contributes to reduced operating costs and less heat generation, making the amplifier ideal for integration into tight spaces.

Another characteristic that enhances the MPA 122's appeal is its wide range of input options. The amplifier features both balanced and unbalanced inputs, including 3.5mm stereo and Euroblock connectors. This flexibility simplifies integration into existing systems, allowing users to connect various audio sources seamlessly.

The amplifier also offers comprehensive signal processing capabilities. Integrated DSP features include comprehensive equalization and limiting functions, which allow users to fine-tune the audio output for specific environments. This level of customization ensures that the sound produced is balanced and appropriate for the specific space being used.

Moreover, the MPA 122 is equipped with a built-in priority mixing capability. This function allows one signal to take precedence over others, making it ideal for applications that require announcements or emergency message broadcasting.

Reliability is another key consideration with the MPA 122. The unit is designed for long-term, continuous use and comes with a robust cooling system to prevent overheating during extended operational periods.

In conclusion, the Extron MPA 122 is a high-performance audio amplifier that combines compact design with extensive capabilities. With its advanced technology, versatility in connectivity, and user-friendly features, it stands as an excellent choice for various audio amplification needs in professional installations.