Vandersteen Sub woofers v Rythmik Subs


I really love the idea of the Vandersteen Subs where they are connected with the mains via extra speaker cable off right and left channels off the main amplifier, which is supposed to provide better bass transition from the mains while keeping the signature from the main amplifier. My question is with Vandersteen coming out with the SUB THREE and the price going significantly higher, I was wondering if there are other subs for less that you could integrate in the same way. (Most subs seem to rely on the line level input which is just a sub-woofer RCA going from the pre-amp to the amp on the sub). Can this same Vandersteen set-up be achieved with other subs?
I picked Rythmik since they are known (in the home theater community anyway) for being one of the best bang for the buck subs and the most "musical" of the bunch. (between Hsu, SVS, PSA).
And could I possibly achieve even greater sub-woofer nirvana since I could get an 18" for around $1500? Vandies only have 3 eight inchers.

I am a Vandersteen fanboy and I would like to support RV whenever I can, but don’t know much about my other sub-woofer options so looking for some feedback. Doesn’t even have to be related to Rythmik necessarily. If you know of other subs that can integrate the same way I want to know about it!

Thanks
bstatmeister
@mr_m  Well said!  I recently had my McCormack DNA-1 upgraded by Steve McC at SMc Audio.  Upon discussing the prospects of upgrading/rebuilding my amp, he told me that some well-heeled clients afforded him the opportunity to design some ultra amps. He was able to take some of what he learned designing those amps and trickle them down to his SMc modifications and that my amp. would benefit from such. Exactly the same mentality as RV who loves to push the limits with the Model 7s and then bring some of what he learns down to the lower end of the line.  I agree with your assertion that the Model 1, 2, 3 designs are the bread and butter of his company as all of those speakers deliver great sound for the price and accommodate to diverse listening tastes and listening spaces.  For those who are ready to move up the line for an even more refined listening experience the speakers are there to be had.
@ieales  I guess you straightened Mr. Vandersteen and I out.  Thank God someone did!😯
ieales,

Since you have now claimed to have blown holes in all of Vandersteen's theories in subwoofer design, what would you suggest to be correct????
@noble100 

tim - it looks like you missed a few decades of Vandersteen innovation since your speaker shopping experience with now long discontinued model 4

yes Vandersteen has always been about frugal value many of the products ( which you can still buy in upgraded version today ) have risen less than inflation ( Model 1ci data available on a recent thread ) perhaps you have run a business and did better that inflation... I can say having run a $1b a year operation it can be tough and requires constant improvement

i would say including Dick Hardesty that Vandersteen entered the ranks of the very best of high end with the model 5
which includes a magical push pull aluminum cone driver with patented honeycomb bracing - lots of crappy non pustonic drivers might even out frequency response but out of phase junk is distortion.
the 7 which you seem to malign ( have ya heard it ? ) as Uber expensive is with exceptions of Magnepan probably the best value in SOTA speakers
count me as biased, I own a pair and the monoblocks
look at peer group prices at Munich show and perhaps learn that $62k might be good value
did you by any chance take time to understand the carbon fiber and constrained layer cabinet in the 9 sub ?

finally Vandersteen are ruthless about driving advanced features and technology down the line to improve Sound in less expensive models
i get you love swarm, you are happy
enjoy the music !!!!


Also in the interest of full disclosure I actually own and listen to the extremes of the Vandersteen line - from $1,370 a pair Model 1 to Treo CT to the 7

have to say all quite musical and I sure enjoy music.....

peace