Comparison of various subwoofers for 2 channel audio

Velodyne DD-10 modded. Alex/WTA

I use 4 subs in a distributed bass array (swarm) and have never had better low frequency reproduction.

From what I have read, the integration of the subs is more a result of the interface/crossover and less about the brand of sub used. I have 3 Rel's and 1 SVS.

I use a MiniDsp 2 x 4 HD to set the crossover for individual subs.

@carlsbad2 

Just prefer the natural sound, as I only listen to acoustic music.

@james633 

The bass in the listening position is great.  Near perfect, although perhaps slightly loose on occasion.  I was just going to daisy chain the two subs off the first two, using only the incorporated LPF, and they’d probably only be a slightly different distance from the listening position.  This would be more of an auditory experiment, as I’m not sure it’s going to be any better, and I suppose it could be slightly worse, although I doubt it.  Many listeners have reported significant improvement with more than 2 subs, so I figured it should be worth a shot.  If it’s worse, I suppose I would then compare 2 different brands of subs running in pairs, as an A-B and keep the pair that I prefer.
 

Others might disagree but if it was me if I liked the sub I had, I’d buy another one or 2 or 3. Lots of people recommend Rythmik. I had an F12 and while it was a good sub I found it lacking punch. I must be in the minority because I do not hear that complaint from others. 

As an active learner…anything to say about crossover points?  I experiment here, and have a hard time settling on settings…seems to be volume related.

Totem Forest Signature, powered by Accuphase E-380, and an REL Classic 98 sub.  Small wood paneled cabin room.