The JBL ES250PW looks interesting. It is 2.4 ghz wireless. 12", 400 watts. About $1 / watt.

Also saw a Cadence XSUB-12 (CSX-12)- 350 WATT Powered Subwoofer for $180. Quite tempted with the Cadence due to the price. The auction ends soon too. Also do not want to wind up with a sub that is too weak for the rest of my system and or the size of the workshop.

* Looking at the Bstock here. Not sure I could do better than the LFM-1 Plus B-Stock there.
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Outlaw 970 or 990
(2) NAD C-272 amps
Sony (ES) SACD Player
(4) JBL 29Av-1 Speakers
JBL ES250PWCH 12" Sub
Dell GX620.
Asus sound card Optical out.