Paradigm PDR-10 Powered Subwoofer
This is a great entry-level subwoofer for audio or home theater use. 10" high density pulp cone woofer, with high excursion, and 100 watt plate amp combine for a nice musical punch. The subwoofer allows for both line-level and high-level speaker input connections so it can be paired with vintage systems without issue. A couple bumps and bruises, but no show stoppers, and the woofer foam is in excellent shape.
$75 takes this little sub home.
(Shipping and MA Sales Tax not included)