you want at least 6 feet of cubic air space for one l7 15.. ive got 6.6 cubic feet i wouldn't try and mount it on the sideConsidering installing my Kicker L7s but didn't see the square cutouts as an option. Would love to go with the pre-fab option due to the little amount of free time I have.
The l7 is not a competition woofer. Sticking it in a box designed for a spl competition is going to make it a one note wonder. It is a daily driver kind of setup.what other purpose does a 15L7 serve? Most definately not a SQ sub. Putting a 15L7 in anything other than a huge box contradicts the purpose of the sub IMO