Welcome to the SMD forum!
I have reached my limit with pre-made enclosures. I have my 2 Subs powered by a Rockville RDX M5 at 1 ohm. My system is currently limited by 2 things 1. I have just the stock battery and alternator ( I did the big 3 and it made a huge difference) 2. Pre-made enclosure. I want to do a single, duel or series reflex bandpass enclosure. Has anyone built a custom enclosure for the 12w6v3? I would be interested in what you have built?