The DMHPRO is designed as an SPL woofer typically used in custom installs.  It's not that it won't work in a Deathbox because it actually will.  The issue is low bass response.  The DHMPRO only goes down to about 50HZ.  If you wan't low bass from your Deathbox, the DHM108 is the correct woofer.  If you want to change your order e-mail dev@decware.com sometime today.

Thanks,

Steve Deckert