Rel vs the world


So whenever you look for subwoofer recommendations for 2 channel hifi, one name keeps dominating the conversation.. rel. And the flagship no 25 is seen as the ultimate subwoofer by many. My question is, has anyone compared well made but more affordable subwoofers (JTR, PSA, Rhythmik) to rel subwoofers (especially no 25) and go equally good or better results with the more affordable subwoofers?
Also thoughts on effects of cone material on sound in subwoofers? I am very interested in the choice of using carbon fiber cones on speakers like Alon in Magicos and Michael Borresen in his speakers. When I saw this in the rel no 25 I wondered if that was one of the reasons people were impressed with its performance. I found this article that Tom from PSA sent me pretty interesting.
"Myth: Cone Material Affects the "Timbre" of Subwoofers

At low frequencies, in the bass region below 125Hz, the cone material has no effect on the sound. If it did it would only be because of peripheral side effects such as a large change in the moving mass of the driver, or a cone who's strength and stiffness is deficient for the application allowing a lot of flex and distortion. A subwoofers cone or diaphragm should be stiff enough to not flex appreciably even when under heavy air loads. Any sufficiently stiff subwoofer cone would have resonances or breakup modes which are well beyond the bass range and should be inaudible with a typical low pass filter applied. If we have 3 identical sub drivers with different cone materials, one with an aluminum cone, one with a carbon fiber cone and another with a pressed paper cone and all are adequately stiff and the total moving mass of the driver is within a few percent of each other they will be indistinguishable from each other in a blind listening test.

The main take away here is that subwoofer cone material choice is primarily a consideration of strength/stiffness/durability/cosmetics/cost and weight. Sound is not one of those considerations.
"https://data-bass.com/#/articles/5cbf5e7357f7140004d6d0ec?_k=o4xuea


smodtactical
Don't let anyone tell you that manual integration is a easy peasy thing to do and the RELs do it just so seamlessly. It is simply not true

Maybe it didn't work that way for you, in your room, with your system.  It did for me.

The Rythmiks might be fantastic subs.  If I tried them, I might like them even better than RELs.  I simply have no idea; I've never heard them.  Regardless, there was nothing in what I said about my experience integrating REL subs that is "simply not true."  Following the manual process outlined by REL gave me, and apparently others, results I am extremely happy with. 

Acoustics is hard.  Perceived acoustics, even harder.  Anybody's mileage may vary.  But "simply not true" is just rude and silly.
@trentmemphis, Ah yes, the longstanding REL marketing magic of "seamless integration" like no other sub out there apparently! I guess the power of suggestion can work wonders too...Make some other guy who spent years with it look rude and silly (when i said it was my personal experience and there may be differing opinions/experiences).

Either way, good for you.

@deep_333,

There are plenty of user testimonials relating to REL’s seamless integration. There is no marketing magic or gimmicks in play :-)

I am happy for you that found a ‘cheap’ alternative to REL subs.

Peace!

Haha yes we love to defend what works especially when we lay our hard earned money.out.  I for one can tell you that the SVS SB3000 beats the Rel S/3, but that's in my room and my opinion.  @deep_333 thanks for the detailed response- the only thing that makes me pause about trying the Rythmic is the cool app that SVS has that allows you to dial in the sub much like Roon allows adjustments.  It's nice to be able to adjust on the fly based on the genre or recording.   I'll probably give the Rythmic a try.  One thing I love about Rel is their marketing- those stacks of subs look awesome. 
@deep_333 thats impressive! The Rel812 is supposed to be very good.
I was thinking of getting 4x F18 with the black aluminum cone and piano finish.