Yeah, these guys are shady.i agree groundshaker sealed prefabs are ok as long as the internal volume is right.
now there add says these boxes are "cuztom made @ concord auto".....huh .
who makes the box above to the left of the "groundshaker" ? its a different logo. who makes "groundshaker" enclosures? wooferetc? something doesnt add up. i post pictures of enclosures i have designed and made, not someone elses boxes.