Danley Sound Labs has now resumed production of the TH-50 subwoofer. Supplier issues forced the suspension of the TH-50 in 2011; however, audiophiles continued to request the product over the years for home and commercial theaters.
More details from Danely Sound Labs (www.danleysoundlabs.com):
Danley Sound Labs introduced the TH-50 subwoofer in 2007, and its amazing low-end performance quickly earned it the respect and love of home- and commercial-theater enthusiasts. Its uniquely smooth 21Hz to 70Hz performance, abundant headroom, and undeniable beauty led many folks to argue that the Danley TH-50 was the world’s best theatrical subwoofer. Unfortunately, Danley had to suspend production of the TH-50 in 2011 due to supplier issues. Now, happily, those issues have been resolved and thus Danley is resuming production of the TH-50.