Setting Input Level

MPA 401

MINI POWER AMPLIFIER

TREBLE

BASS

LEVEL

Adjust the input level as follows: 1. If necessary, unplug the remote plug from the unit.

2. If connecting the amplifier to a system with adjustable volume, set the volume to its lowest point.

Then adjust the level potentiometer fully counterclockwise to its minimum setting.

3.Set the system volume to its maximum level. No sound should come out.

4.Slowly increase the amplifier level until sound distortion starts to occur. Lower the level slightly until the distortion disappears. This setting ensures that, whatever the system volume setting may be, no clipping occurs.

Setting Bass and Treble

Adjust the bass and treble as follows:

1.Use the bass potentiometer to increase or decrease the bass shelving ±10 dB at 100 Hz and below.

2.Use the treble potentiometer to increase or decrease the treble shelving ±10 dB at 10 kHz and above.

NOTE: Turning the bass or treble potentiometers counterclockwise will decrease the

output at the specified frequencies. Turning the potentiometers clockwise

will increase the output. When the potentiometer is at the center detent, flat response is achieved.

MPA 401-70V and MPA 401-100V • Setup and Operation

MPA 401-70V specifications

The Extron Electronics MPA 401-70V and MPA 401-100V are powerful, compact audio power amplifiers designed for efficient performance in a variety of professional audio applications. These amplifiers are specifically tailored for use in systems that require reliable, high-quality audio distribution in challenging environments, such as schools, corporate settings, and commercial spaces.

One of the standout features of the MPA 401 series is its versatility in supporting both 70V and 100V speaker systems. This functionality allows for easy integration into existing audio setups, accommodating different types of speakers and installation requirements. The MPA 401-70V and MPA 401-100V boast an output power rating of 40 watts per channel, providing ample power for driving multiple speakers while maintaining audio clarity and precision.

Another key technology employed in these amplifiers is their efficiency and thermal management, which are critical for long hours of operation. The MPA 401 series is designed with an advanced Class D output stage, ensuring high efficiency while minimizing heat generation. This not only leads to lower energy costs but also increases the reliability of the devices, ensuring consistent performance even in demanding conditions.

The MPA 401 amplifiers are equipped with comprehensive input options, including both balanced and unbalanced inputs to accommodate various audio sources. This flexibility makes it easy to connect microphones, mixers, and other audio sources, ensuring that users have the tools needed to create a seamless audio experience. Additionally, each amplifier includes a built-in high-pass filter, which can help optimize the sound when used with specific speaker types.

Including features such as fault protection, short circuit protection, and thermal protection, the MPA 401 amplifiers ensure both safety and longevity in operations. Their compact design makes them ideal for installation in tight spaces, while the rugged construction guarantees durability in any environment.

Furthermore, the amplifiers offer front-panel controls, providing users instant access for volume adjustments and signal monitoring. This simplicity of use enhances the overall user experience, allowing for quick adaptations and optimizations on the fly.

In summary, the Extron MPA 401-70V and MPA 401-100V are robust amplifiers designed to withstand various environmental challenges while delivering exceptional audio performance. Their combination of power, efficiency, and flexibility makes them an excellent choice for a broad range of professional audio applications.

Extron electronic MPA 401-70V manual Setting Input Level, Setting Bass and Treble

Models: MPA 401-70V