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


I have narrowed my choices to one Rythmik Audio G22 Dual 12" subwoofer or two HSU Research ULS-15 II. I am trying to keep my budget to under 2K. I like the fact that the Rythmik is servo controlled and seems to be of higher quality. But I also like the thought of two subs vs one.

What say ye, Audiogoners?

Oz



128x128ozzy62
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."
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
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!
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
@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.
Check out that pair of Omega Speaker Systems Speed 10 subs here on the gon.  They look pretty interesting.  If you have walnut cornwalls, it might be a good match aesthetically
@onhwy61 

You may have been looking at my system profile. I no longer have the X3s. I now have Cornwall IV loudspeakers. Even though I know they aren't doing much below the mid 30s, the bass they have is excellent. I am just looking for something to augment that lowest octave.

Oz



Come on Oz, you know the answer. Right? You have read the DBA threads, right? So you know that with subs more is always better. Right? And they don't have to be the same. And the more you get the less it matters what and where they are. Right?
First, why do you want to add subwoofers.  Second, why wouldn't you go with open baflle subwoofers?  The GR servo subs are around your price range if you're willing to build the frames.
Also consider the possibility that "upgraditis" could set in if you go with the 2 lower priced/lower performance subwoofers especially if the higher performance/priced sub was within your financial reach. In that case, it would be wiser to get a single more expensive sub first as it would save you cash in the long run. After you get the 1st sub, skip a burger a day and save the cash for the 2nd one 6 months later. It does require patience.

If you feel that you won't be affected by "upgraditis" too soon, you could go with the dual HSUs. "Upgraditis" is a common disease among audiophiles (reason for this comment).

Yep,patience  is a virtue.  You have to keep scouring for sale ads. Try hifi shark. I believe you can do a search and get alerts.
Well that's the trick. Finding two of anything used at relatively the same time isn't easy.
for 2 channel stereo listening -- it isn’t about the amount of bass

it is about distribution of the bass and how it matches/mates w your speakers and room

two usually work MUCH better than one if the room is of any meaningful size

suggest you consider older, relatively inexpensive Rels... use high level connections - should be able to get two for just around a grand
If it were me and my money, I would get two HSU’s. You will get more even bass. I run three HSU’s in my 9x13 listening room with very good results.