I don't get why JBL would make them dual 6ohm... those are awsome subs, but the impedence makes it hard to get any power from an amp with a single sub.... WTF ??


Anyway... I would buy a second 15 and either take the time to design and build a proper box, or pay to have one made... prefab boxes generally suck anyway...

Also, if you amp is only 2ohm stable, you should still be OK running it at 1.5ohms....

 

^^^ That is also a very good option. I think two JBL 15's only need around 3-3.5 cubes total for a sealed enclosure in SQ application.