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A big noise in stadium loudspeakers

Electro-Voice has released a new MTS series of full-range, high-output, long-throw, point-source loudspeakers for stadiums and sports venues. 

Each MTS model has four 15in woofers and dual coaxial mid/high frequency compression drivers. It can generate more than 151dB peak SPL with exact directivity for very-long-throw applications.

The loudspeaker geometry, complementary amplifier matching and digital processing are computer-optimised to ensure precisely distributed sound pressure levels that remain balanced and controlled throughout the entire coverage area – even at full output. Four slot-loaded, high efficiency low-frequency drivers are symmetrically coupled to the same full-range waveguide as the compression drivers to create a true point-source with substantial bass response, eliminating the need for additional subwoofers in many applications. 

There are sixteen models, based on two standard three-way configurations (MTS-4153) with 60×40° or 40×30° coverage, and two cardioid configurations (MTS-6154) that provide the same coverage patterns with enhanced low-frequency directional control. The 60×40° models deliver extremely high SPLs: 151dB peak (music) and 154dB peak (speech) down to 55Hz at -10dB; while the 40×30 models can deliver 152dB (music) and 155dB (speech). Each is available in black or white, and in partially- or fully-weatherised versions.