MTM PA Speaker

Designer:
SRL Loudspeaker

Project Category:
Loudspeakers/Cabinets

Project Level:
Intermediate

Project Time:
8-20 Hours

Project Cost:
$100 – $500

Project Description:
This project entailed building two (2) small format MTM PA speakers utilizing the best materials, components, and construction techniques.

Design Goals:
Build an enclosure that had very high SPL, power handling, and excellent fidelity.

Driver Selection:
Eminence Delta-10A 10″ Midrange Driver 8 Ohm
Eminence PSD:2013-8 1″ Titanium Compression Horn Driver 8 Ohm 2-Bolt

Enclosure Design:
3/4″ Baltic Birch plywood with zero fasteners. Entire enclosure is held together with beach-wood biscuits and glue. This method while taking longer actually ensures a stronger bond and zero chance of vibration and resonant frequencies from fasteners coming loose.

The only fasteners that were used were 10-32 T-Nuts and grade 8 SHCS’s to hold the drivers in place. 1/4″-20 grade 8BHCS’s and clamps were used to hold the grills. Pan head wood screws and finish washers hold the aluminum wave guide in place.

Crossover Design:
Crossover was electronic by choice of Ashly Protea 3.6SP

Conclusion:
While this project was very time consuming, it yielded a product far superior than any big name PA speaker that could be purchased. We utilized the finest materials, construction methods, and Eminence Drivers for a high quality product. This design is very unique in the sense that there are next to no PA speakers in the MTM format using a wave guide like this. We steered in a different direction than the typical line array MTM design. This gave a much more versatile use for its application

About the Designer:
SRL Loudspeakers (founded 2017)

We were founded on guitar iso-cabinets and quickly moved into designing and building sound reinforcement cabinets for DJ’s and mobile musicians. While lead times aren’t our selling point, our quality and tonal characteristics speak for themselves.

Project Parts List: