sub box question

[hybrid90accord]

Bandpass boxes just like ABC boxes can sound good but have to be custom built and tuned to the sub and 90% you see online are universal so they suck. Im no fan of bandpass but i have heard a few on teh car audio circuit that were custom built and sound killer. Those Orion XTR bandpass boxes were pretty nice and got pretty deep

[THEONE]

Bandpass boxes just like ABC boxes can sound good but have to be custom built and tuned to the sub and 90% you see online are universal so they suck. Im no fan of bandpass but i have heard a few on teh car audio circuit that were custom built and sound killer. Those Orion XTR bandpass boxes were pretty nice and got pretty deep

do you know the box im talking about? you cant buy it pre made unless you bought the ones that came with a the old orion cobalt subs. it has to be built all i need is the build plans for it or a link or the actual name of the box...