bet you they sounded shitty in that box 'ey flat sounding??? those subs are designed to work as infinant baffle drivers ie "freeair" or at least run in huge boxes....great woofers though....no one knows how to set em up corectly
howzibout a swap for my jl audio 12W0's they'll run in 1 cube boxes very easy (im after freeair woofers for my car i just prefer sound quality of the zr's over huge ground shaking bass)