New Year Sub Woofer Enclosure

Latest 3 CF sub enclosure with "adequate" internal bracing.

Latest 3 CF sub enclosure with more than adequate internal bracing.

Today I finished yet another speaker project. This one I designed myself and customized for a client. This project is a large, tall, sealed, 33 ft, 12″ sub woofer enclosure with more than adequate bracing. This is the most heavily braced enclosure I’ve made to date featuring an inverse arc, U shaped rear panel brace and two side panel H shaped braces to provide the stiffest possible enclosure without going to thicker materials. As I gain more experience I’m learning how to design enclosures with smaller effective panel segments and braces that break up the panel to raise resonance. All three braces are glued and screwed down the center as well at at the outer attachments. The brace below is designed with an “inverse arc” along the rear panel. This shape provides the thickest part of the brace centered on the largest, weakest part of the back panel. The holes are cut in the arc to reduce its overall volume impact on the enclosure. Center and front braces are customized to fit the TC LMS 12″ driver magnet as well as provide full length top to bottom bracing in two places along the sides, front to back. The internal bracing reduces panel resonance equal to a 6″ wide panel assuring its resonant characteristics will occur well above its operating range. Continue reading