MTX Thunder 7515 heavy duty cast basket 15″ Subwoofer, built to pound. 
MTX has taken subwoofer design and bass output to the next level with the introduction of MTX’s new Thunder Round (TR) subwoofers. Available in 10″, 12″ or 15″ sizes, these subs were designed with one goal, to bring the noise! Updating and upgrading the technology found in past MTX Super and High Performance Subwoofers, the TR Series has all the beef and brawn you need to be the loudest ride on the block. Whether you are looking to hit some sick SPL numbers or you want to roll with your favorite tunes, the Thunder Round subwoofers are up to the task.
The leader in the new Thunder Round line-up is the TR75 series. These beauties have a host of features designed for performance including a die cast aluminum basket, a black anodized aluminum dust cap (with a laser etched gothic MTX Audio logo) for strength, compression molded NBR surround for extreme excursion, and 8 gauge nickel compression terminals designed to deliver big power from your amp to these subs.
The looks tell it all.  These subs will handle the power.  They are conservatively rated at 600 Watts RMS.  Conservative ratings mean the subwoofer will handle far more power as long as amp is not distorting.  & many subs are rated at max power which is like multiplying the RMS power rating by 3 to 5 times!  See these meaty monsters on display in our store.

MTX Thunder 5515 15″ Subwoofers are rated at 400 Watts RMS.   They work well in vented or sealed boxes of compact size.  On Display in our store.  The TR55 series subwoofers don’t hold anything back and also deliver the heaviest beats. These subs have a gloss black metallic paint on the polypropylene dust cap with a raised MTX Audio gothic logo, stitched surround for durability, stamped basket design, and a rubber magnet boot to enhance the look of the subs when reversed mounted.