How can a Sub Box be Universal?
The box designs above are unique in that they A) have predictable performance in almost every vehicle and B) work with the vast majority of car audio woofers despite the wide range of Thiel & Small Parameters.
The Deathboxes have an adjustable insert/baffle assembly that lets you
tune the box to most car audio woofers by ear once you have it installed
in the car!
The Housewrecker is large enough and has enough loading combinations (1
to 4 woofers) that it can be made to work with most 15 inch car subs
without adjusting the port sizes.
The Wicked One is a self tuning design that simply works with nearly
everything. The Inverted Wedge is also a self tuning design and
while they achieve it by different means, they both work with the
majority of car audio subs without the risk of De-tuning.
The truck box is the most space you can get behind the seat of a compact
pickup with the seat all the way back. Extreme cabin gain
combined with the centered woofer locations make this box work with
nearly all standard car audio subs without the need for fancy
The Low Rider achieves a similar flexibility with it's
unique port design. The ports will operate differently for
different woofers ensuring a solid tuning center on almost everything.
Universal Boxes are rare. The DEATHBOX was the worlds first and still remains unbeaten for it's size.