I have an audio friend who had an all revel set up using the sub30 and got the jl audio 113's and bought a bryston xover --thought the jl was an improvement--
Revel Sub 30 vs JL Audio F113?
Looking for a pair of subs my Ultima Gems, obviously the Sub 30 has the advantage of being designed to work with the Gem and has a built in crossover, it nice that it matches aesthetically as well, but I have heard great things about the Jl's. Anyone have experience with these two subs?