Best subwoofer under $1,500 for Magnepan 3.6R


I know that this topic has been covered here in depth over the years and I've already gone back and read those threads in the archives some of which are quite old.

I'm looking to add a powered subwoofer to my Magnepan 3.6R speaker set up which is used primarily for playing 2-channel and 5.1-channel acoutsic Jazz and electric Rock (Rush, Pink Floyd etc...) I use a pair of Magnepan MG MC1 speakers for the surround channels and an Magnepan CC3 center channel speaker. My room size is 19 feet by 12 feet in size.

I've read great things about REL, Velodyne etc.. but most of those are too expensive for my budget. I'm looking for a subwoofer that will work well with my all Magnepan speaker set up under $1,500 new or used.

I appreciate any and all advice that anyone is willing to offer.
southernphoenix
I've heard nothing but good things about Hsu research subs.
Sold factory direct I believe.
http://www.hsuresearch.com/products/vtf-15h.html
Also paradigm are pretty good but may cost a little more for ones that will reach deep down.
I use velodyne F1200r and love it, if you can find one in good shape,pull the trigger.
The 3.6 will be even better with a James EMB 1000 in a small room, the EMB1500 in a mid-sized room, and the EMB 1500 in a large room. They do add to the 3.6 which may go down to 30hz, but it is probably rolled off 10dB. They sub crossed over at 40hz just gives a bit more weight and authority, and the Maggie can handle the midbass. Try it with an external Xover like the Marchand XM44 or 26. I tried the JL audio JL Audio subs too, and for the money, I preferred the James. The Jl are great, but pricey. I also tried the Mirage BPs400, a bit more suited for home theatre, and a little bit slow, tried Velodyne, too fat sounding and slow. They are reasonably priced too. I used it for music exclusively. Jallen
Get the best JL audio you can afford. An F110 can be had easily for 1,500 used. If you are patient you could pick up a F112 for around $1,500 - you will not get more sub for the money than that.
Thanks to everyone who responded to my question with so much detail and information, I really appreciate it.

My thanks to "Jallen" for recommending the James Loudspeaker EMB 1000. This looks like the way I will be going.

Has anyone else here ever used the James EMB series subs with Maggies?
I have a James EMB 1500 that I have had in storage for some time. Barely used. Did you end up getting the EMB 1000?