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 can’t add much more expertise than MC and Atmosphere, but only my personal experience. MC is correct that more subs even out the bass nodes. Atmosphere is correct that larger cones mean less movement and a smoother response. I have a small sealed REL for a small room that works well with my stand mount Von Schweikert VR-1s. I have two Hsu subs that work well for my music room with HT. The idea that you don’t need subs is folly. Music and its harmonics go below 20 Hz. That’s the goal. I think it’s better to go with two or more subs properly positioned (see the Harmon white papers) is better than the best single sub. I recommend setting your highest budget and starting with two subs of good quality, position them properly and tune them to your system. Reach for sub 20 Hz at a reasonable level and add subs when you can. One expensive sub is not better than two subs of lesser “quality” for the same price if properly positioned. It takes time and effort. Ideally you won’t even know the subs are there, until you turn them off. Best of luck. Play on!
I would totally go for 18" JBL subs. Four, to be precise. Or five. The more the better.
For once, I actually agree with millercarbon.  My subs are positioned to be and time aligned with my mains.  However, as I often state, THERE IS NO "BEST" anything.  It is all way too subjective.
I repeat:  There is no best anything. There is no best car, quarterback, tennis player, nor especially, no best speaker or amp.
18 inch Bag End Infrasub.
I have 2 up front in a hometheatre/ stereo setting and a Mirage BPS 400.
I wouldnt change this setup for anything...ever!