Best sub for music,


Not HT, repeat not the boomboomboom of HT  effects.  which does not offer the high fidelity of musical sub bass (20hz-40hz) 
I'd have to go with the seas W26E001. which has a magnesium/aluminum cone. 
What that raitio is, not sure, seems 50/50. 
None of us here like the sound of those old aluminum cones. But my guess is Seas had to incorporate some alumium inorder to gain the 20-30hz and also mabe keep costs down. 
This YT vid says **Aluminum cone** which is confusing YTers.
Its a  composite, and perhaps the best ture woofer on the market.
Been around for ages, still hard to beat for pure natural low mids. .
Magesium is the best material to keep unwanted resonances out in the  60-1k range, very low/hardly measurable distortion. 
The issue here  tops out at 1k, so its really a  sub. 
This woofer may be a  good candidate to pair with a  5 inch wide band. 



https://www.youtube.com/watch?v=RSiuaMWodzI

http://www.seas.no/index.php?option=com_content&view=article&id=362:e0026-08s-w26fx001&c...
mozartfan
I believe cone material is only one small piece of the puzzle.  Speaker design is as much an art as a science.  My pair of Vandersteen 2Wq subs, now discontinued, have never been anything less than super musical, powerful and of a piece with my mains.  The only hitch is that your mains must be close to flat down to 40Hz.
This is a great thread! Thanks for the OP and the contributors. Right now I can't spring for a second sub for my main system. But I have one pretty good one in another system that I can add to my main system. Does mixing different sub brands/models introduce more problems than it fixes? My main L/R speakers go authoritatively down to about 40Hz. So I'm just adding the 20-40Hz. Thoughts?
I have only bought subs in pairs. Having been doing high end audio, I have learn certain abstract generalities that lead me to make choices without knowing facts. I wouldn’t mix. I would buy one and save to buy the second identical.

when I went to buy my first sub, the rule of thumb was, “you only need one, bass isn’t directional”. That didn’t feel right to me. No logic or reason… it’s the little stuff that matters in high end that add up to a really great system. So, I bought a pair. Over the ensuing years I read article after article as it became the common knowledge that in 2 channel 2 subs perform much better than one. And indeed, when you unplugged on e of my subs, the soundstage would diminish substantially. Why, don’t know, but it really made a difference.
I have had 4 different subs - and tried about 4 others that were "reviewed" as being the best.  Settled on a Rythmik - love it.  Unfortunately, they are not sold through a dealer network, so the support is not there like a good dealer would offer.  I got the 15" because I wanted something that would extend below my Wilsons.
@plaw - same here.

2 x Rythmik (E15HP2), with Wilson Audio speakers.
Those 2 Rythmik’s are about the same price as a single REL S/812.
Just way too many things not to like about REL subs.
Only 63 pages of comments on the AVSForum REL forum since 2008.
For example, SVS (1700+), Rythmik (2400+), PSA (3200+ pages).
Have never read a REL subwoofer recommendation on AVSForum yet (with the exception from within the REL forum itself). Outside that forum, nothing, or very rare.