A 65lb Nelson-Reed passive sub. It's not hooked up. I figured that it was designed to be acoustically neutral with no resonance and it's the perfect height for the table!
What's under YOUR turntable?
You're very welcome to be as informative as you wish.
(My apologies for borrowing on a similarly* titled thread in the Digital Forum.)
(My apologies for borrowing on a similarly* titled thread in the Digital Forum.)