Sub Question. One higher quality sub or two lesser quality? (Rythmik vs HSU)

@b_limo 

Yeah I saw that pair a couple days ago. Although it looks interesting, I'm not sure that they could keep up with the output of the cornwalls.

Hello Ozzy,

     You know that I know that you know the answer.  Two subs will perform about twice as well as one sub in virtually any room, including yours.  Two ULS?-15 mk2s would perform very well and, according to their website, they're within your budget:

$739 each with $85 s/h=$824 each/shipped
2 x $824=$1,648

     Here's the link:
  http://www.hsuresearch.com/products/uls-15mk2.html

Am I missing something?
   Tim

It's been some time since I owned any HSU subs, so maybe they have gotten better, but I like the build quality and sound of Rythmik and SVS subs a lot more than HSU.  Consider getting two F12s vs. a single Rythmik sub or push your budget a little and get 2 F15HP subs from Rythmik.  I would also take a look at a pair of SVS SB3000 subs.  Right at your budget point and an excellent value.  Or get 4 SB-1000s and make a Swarm!

I own HSU subs and Vandersteen.
The HSU's are very good for the money. The Vandy's, with their crossovers, are, in my opinion, the best- easy integration, and built like tanks, unlike many brands. ( I would do a search here on Audiogon. I remember one brand was using rather inferior parts in their subs).
I bought both of my subs used, as pairs, so check HifiShark like I did.
I will be selling my 2wq's soon, so I can buy the new Sub 3's.

Multiple subs are the way to go, as they reduce room nodes, There is also the DEBRA that Audiokinesis sells. Ralph Karsten (Atmasphere) finds it to be very good, as well.
Bob

When I was looking into a second sub, REL themselves told me that getting identical subs was important. Others here have agreed and disagreed with that view. 

Via Audioholics: "Ideally you should use identical subwoofers for the best overall performance, but it is possible to mix and match subwoofer brands and types if you're willing to do the extra work. If using mismatched subs, bear in mind that systems with different low frequency cutoffs may well be in phase and additive over most of their band, but at or below system resonance may well be out of phase. This can put us in the position of having the sub with a higher cut-off frequency reducing overall system output below its cutoff frequency.   This is why we usually recommend using identical subs all around."