Quote Originally Posted by bowtie427ss View Post
FWIW, the Acoustic Elegance TD-15M is a highly regarded woofer in the DIY and HE(high efficiency) interest groups. As with many niche market products, they're only produced to order which can cause some frustratingly long delays(you can read about this on other forums).
+1
I've not yet heard these, but some expert builders whose opinions I trust have spoken very highly of these woofers. I was just looking at these a couple of weeks ago for a project I'm doing for a friend to replace some old woofers in Altec 816 cabinets. You can find a measurement a DIYer made in this thread:

Ugly LP Filter

And some pro measurements of the "beefier" TDM15H can be found here:

Best woofer for a 2-way using Altec Mantaray