SWARM / Multi subwoofer questions

So this is for the peeps that know what "SWARM" means not just loud but Headroom, Sound stage, and for Music only. I have an all sealed system and getting excellent results with two Hsu ULS `15's on opposite sides of my room and my Dunlavys. I will be adding a 3rd for Fathers day to myself. So question is who makes a bass EQ to help make it as perfect as it can get? I bought a DSpeaker 8033 and a mini DSP with questionable results... Actually like it better running speaker level off my Pass Aleph. Possibly I just dont know what Im doing actually really good possibility. but I would love an outboard X Over that actually works for a swarm set up. I know JL Audio makes a CR1 but it gives me angst to spend 2-3K and Im sure there has to be some pro Equipment out there especially given that Im running my speakers Full range and dont need a high pass. Any advice is greatly appreciated! 


Here is a review of ULS 15's with specs supposed to be plus and minus 2 db from 20 to 100 hz. Speakers are Dunlavy SC 3's and annoying ruler flat to 50 or a lil deeper. Get the right gear and they are CLS, Avalon, Soundlab, Watt Puppy magic. least to me.  

7e8adcbb d3c6 4988 9f12 da3326830708haywood310
Right. Only its not exactly like you will feel its still needed. More like when you add it you will be surprised and wish you'd done it sooner.

Its hard to explain but I think it has to do with the way really low bass works. With moderately low bass, like 30-40 there are lots of times where its pretty easy to spot. You hear a bass line, get the feeling that as the notes go lower they should be all the same, but they're not. They trail off. So you know to do something about that.

Really low bass though is completely different. Its not even hardly heard at all. Its more a sensation. And its there in some surprising ways and sometimes where you would never expect it. A lot of the time its not even really part of the music. Its more a part of the room. In other words a big recording room or concert hall, it has a natural reverb to it that is very low depending on its size. You don't really hear this, but you do feel it. Sense it. This is what people mean when they say good bass opens up the sound stage. Its really opening up your room by making it feel not like the little room that it is but the big one the music was in. We're used to that from good imaging where the high frequencies seem to make the stage extend out beyond the walls. But with really low bass its not just in front on the stage. You are enveloped in it.

It’s a little more speedy ,  the legacy wavelet is a step up from a Mini dsp
You should take a look at the Rythmik subs.  If you talk to Brian the owner you will be in for a treat.  He has a doctorate in Electrical Engineering.  He is a genius.  They sell direct and put very expensive drivers and amplifiers in their subs.  Their Direct Servo technology is patented and incredible.  Call Jim Salk at Salk Audio.  He will explain why he feels Rthmik subs are the most musical.  He builds custom subs using Rythmik drivers and their Direct Servo American amplifiers.
Hello this link for the free REW sub program ,
buy the dsp,usb Mike,  on this link under$100 And eq one sub at a time and fantastic results.
One more thing without exception 
the New SVS -3000 SB subwoofer is the best under $1500 on the market 
just compare , it is a 13 inch version of their great ultra 16 sub
ithas a great app , very powerful amplifier 52 bit analog devises microprocessor 
the only split pole voice coil on the market which allows precision Bass even at low volume the others donot . I have owned Rythmic, mj acoustics JL audio
REL,Velledyne all models were more expensive  . This sub has a 45 day audition ,and free shipping , and free  return if not completely satisfied, and a 5 year parts and labor warranty .
Nobody else can touch all these features and under $1k .  Buy 2 subs with an added extra $100 off. Honest tight tunefullBass to 18 HZ it is a Great sub ,
just check it out nothing to loose and the competition will not offer a trial .