The MA12 modular line array loudspeaker is designed for acoustically demanding indoor spaces where speech intelligibility is critical and speech reproduction is the main requirement. To deliver full-range music performance, bass augmentation is required. Twelve 2.25-inch (57 mm) drivers mounted in a vertical line array deliver 145° of wide dispersion and narrow vertical pattern control, significantly reducing ceiling and floor reflections. The MA12 loudspeaker delivers 300 watts (continuous) of power handling and can be mounted in single or multiple loudspeaker configurations. It is well suited for indoor applications such as houses of worship, auditoriums, transportation hubs, atriums, malls, gymnasiums and multipurpose spaces.

“MA” refers to modular array; “12” refers to the number of drivers included.

The MA12 is the first loudspeaker within the family of modular line array loudspeakers for engineered sound. It is designed to offer the unique benefits of line arrays for installed and portable systems.

Due to its line array behavior when using multiple loudspeakers, it is mounted at ear height and, therefore, better solves customer problems at a lower overall project cost than conventional systems.

The MA12 loudspeaker delivers quality sound for voice reproduction. When it is paired with the MB4 bass loudspeaker, the result is a powerful full-range system that can solve many customer challenges. For rooms with high reverb times, the MA12 performs exceptionally well. It is well suited for such indoor applications as houses of worship, auditoriums, transportation hubs, atriums, malls, gymnasiums and multipurpose spaces.

The MA12 loudspeaker is designed for acoustically demanding indoor spaces where speech intelligibility is critical and speech reproduction is the main requirement. Bass augmentation is required to achieve full-range music performance. It is made up of twelve 2.25-inch (57 mm) drivers mounted in a vertical line array, delivering 145° of horizontal dispersion and 300 watts (continuous) of power handling. The MA12EX loudspeaker is a new weather-resistant loudspeaker in the MA12 family. Designed for a wide variety of indoor and outdoor spaces where voice and full-range music are desired, this loudspeaker delivers full-range music performance between 75 Hz to 13 kHz (±3 dB) without the need for additional bass augmentation. It is made up of twelve 2.25-inch (57 mm) drivers mounted in an Articulated Array design, delivering 160° of horizontal coverage and 150 watts (continuous) of power handling.

The MA12 loudspeaker offers a wide dispersion pattern with a flat vertical profile. It should be mounted at ear height to place the listener’s ears within this “wedge of sound.” This loudspeaker is ideal for applications that present floor and ceiling reverberation challenges. Its longer throw and gradual roll-off offer a more even SPL throughout the venue. It is simple and convenient to install and service.

It uses 12 small drivers (2.25 in, 57 mm) that offer 155 Hz to 12 kHz (±3 dB). The drivers are densely packed, resulting in high power handling (300 W) and true line array acoustic performance when multiple loudspeakers are stacked.

The bottom of the array has to be at or below chest height of a person sitting in the first row, and the top of the array has to be higher than the head of a person standing in the last row. All the listeners’ ears must be contained in the “wedge of sound.” A slight pitch from 1° – 10° may be applied to the loudspeaker to eliminate reflections off the rear wall, as long as the listeners’ ear heights are still covered within the line array.

The loudspeaker must be used vertically. Horizontal installation will reflect sound on the floor and ceiling, compromising clarity and intelligibility, and providing only a narrow band of sound horizontally.

The MA12 requires active equalization, which ensures balanced low, mid and high frequencies in the loudspeaker. In addition, it provides high- and low-band pass filtering for speaker protection.

The MA12—like most other loudspeakers in the product family—requires active equalization to provide a balanced frequency response, and to protect the loudspeaker while also delivering smooth, accurate spectral response across the entire operating range.

All MA12 presets are available in ControlSpace engineered sound processors.

CB-MA12EX coupling bracket for stacking multiple MA12 loudspeakers

Product code (black): 317088-0100 / Product code (white): 317088-0200

CVT-MA12EX transformer 70V/100VProduct code (black): 315338-0100 / Product code (white): 315338-0200

WB-MA12/MA12EX pitch only bracket for pitch adjustment of the MA12 and MA12EX loudspeakers

Product code (black): 318418-0100 / Product code (white): 318418-0200

WMB-MA12/MA12EX bi-pivot bracket for pitch and yaw adjustment of the MA12 and MA12EX loudspeakers

Product code (black): 318338-0100 / Product code (white): 318338-0200

WMB-MA12/MA12EX pitch lock upper bracket for 1 – 10° of pitch adjustment for the MA12 and MA12EX loudspeakers

Product code (black): 318337-0100 / Product code (white): 318337-0200

Yes. Most systems today consist of various Bose Professional speakers. You can build systems from a variety of Bose Professional speakers that include the MA12 loudspeaker. For example, a system in a house of worship might use MA12 speakers to cover the main floor, and 402 A speakers to cover the balcony.

These two loudspeakers have different performance specifications and different voicing. Therefore, they would need to be used on separate amplifiers with separate controllers. Combining the two loudspeakers is not a typical application. They cannot be combined within the same stack due to bracket limitations in design.

You can use any bass speaker. Depending on the application, you can combine the MA12 with one or more from the MB line of modular bass loudspeakers.

It contains 12 2.25-inch (57 mm) drivers, densely packed in a straight line.

A single module can cover an area of 145° (-6 dB) and a throw distance of approximately 60 feet (18 meters). A vertical array of two MA12 speakers (2 meters high) can throw approximately 90–100 feet (30 meters).

A stacked pair has the same horizontal dispersion of 145° (-6 dB). It gives you greater vertical control of the lower frequencies between 100 and 500 Hz.

They can be mounted as a single module or stacked in multiples of two or three in order to achieve line array performance. Bose Professional loudspeaker mounting brackets are available and tested for use with single-, double- and triple-stack MA12 loudspeaker installations. For installations of four or more , obtain your mounting system from a reputable manufacturer. Select a system design that works for your loudspeaker of choice and its intended use. Always have a licensed professional engineer review the design and fabrication for structural integrity and safety in the intended application.

Yes, but the front should be flush with the wall surface to keep from limiting the horizontal dispersion.

The loudspeaker and its optional brackets come in black and white.

Yes, with Krylon spray paints or other similar products.

This loudspeaker has two Neutrik NL4 Speakon connectors and one two-conductor barrier strip wired in parallel.

Each module has three connectors in parallel to easily daisy chain the loudspeakers.

Yes. Use the optional CVT-MA12 transformer. Available in black or white, the transformer is designed to attach easily to the MA12 loudspeaker and allow constant voltage use.

No. It is intended for indoor use only. However, the MA12EX loudspeaker offers solutions for both indoor and outdoor applications.

Yes. The PSA-MA12/MA12EX stand adapter bracket can be used with the SS-10 loudspeaker stand to enable portable loudspeaker mounting and use.