Custom subwoofer enclosure for Mazda 6!

No audio system is complete without a subwoofer, and this one is no exception!  This particular vehicle, however, needed to be able to retain as much of the usable trunk space as possible for strollers and groceries.  So, we decided to build a custom enclosure that would be suspended from the rear deck!

This vehicle has a factory subwoofer in this location already, so there was absolutely no cutting involved!  We removed the factory subwoofer and replaced it with a new Hertz 8″ sub, mounted in the same position.  To improve low frequency response, we built an enclosure for the new sub.  This enclosure was hung from the rear deck and bolted in place with 8 1/4’20”  threaded bolts with locking washers.  Before putting the plastic rear deck panel back on, we applied some sound deadening material to it and the metal frame to keep it from vibrating and also to help seal off the subwoofer from the trunk.  It sounded excellent and there was no space lost.  We call that a win-win!

Here is the factory subwoofer in the rear deck.

Once removed, it leaves behind a nice size hole for the new Hertz sub.

This is where the new subwoofer will drop into.

Just like that! It sits at the same height as the factory subwoofer so it seals off properly.

Here you can see four of the eight bolts that hold the enclosure in place.

And the other four.

We applied some sound deadening material to the rear deck to keep it from vibrating.

Here you can see the enclosure hanging from the rear deck. It is carpeted to match the trunk.

When you are standing up, looking in, you can barely see it.