Technics SL1200 Footer thread size?

Tvad's sorbothane suggestion is a good one, as I've done the same thing. McMaster Carr has a wide variety of sizes and durometers. Be aware, however, that sorbothane will compress over time, so if you're using different thicknesses under different feet you'll need to check your level periodically and readjust the feet to compensate.

Johnnyb53's recommendation to get the rack level first will cut down both on the thickness of sorbothane you'll need and the adjustment range of the feet.

David

I'd been using the brass parts-express cones until just recently. I liked them way better than the stock feet, and even my wife agreed they made the music sound quicker. A few days ago, I switched them out for a set of four Golden Sound DH Cones(large). The DH cones have all the quickness of the brass, but lose a layer of brassy harshness in the treble. So treble sounds smoother, but not laid back. The midrange sounds warmer and bass is smoother and deeper. Two of my test tracks for this were "St Thomas" on Sonny Rollins "Saxophone Colossus" and "Walk on the Wild Side" by Lou Reed. on "St Thomas", the opening drums now really get my foot tapping, and the sax sounds more realistic. On "WOTWS", it is much easier to follow both the electric bass and upright bass at the same time, compared to listening with the brass feet. I really like the DH cones a lot.

BTW, they are unthreaded, and are just stuck in the spots where the feet go by double sided tape.

Also, I have my Technics on an Apollo wall shelf, which I'd really recommend. Technics don't suffer the footfall issues that cause people with suspended decks to go for wall shelves. But it does clean up the sound a lot, the bass in particular.

Neither the DH cones or the Apollo are dirt dirt cheap, but they aren't too bad either. I actually used money from records I sold to pick up the shelf. Definitely a good trade.

Thanks for all the helpful advice. Levelling the rack is not a very convenient option. It is a double-wide (TV-type) VTI rack on casters. The casters are needed because I need to be able to roll the rack out for access to the rear of the gear, and also to clear a sewer pipe cap that sticks up out of the floor. Someone also suggested placing a butcher-block type platform on nylon wedges, apparently available at hardware stores, to level the 'table. But I may try the sorbothane idea Tvad posted. It will be a little while, probably, but I'll keep y'all posted.

in nightclubs we used breeze blocks with concrete slabs on top with zero feedback

A tip I got from a nightclub DJ was to use those wide gel pad wrist rests for computer keyboards. I got a pair and use them under the heavy butcher block cutting board I use as a platform. But I also have a layer of Vibrabpod Isolators and Cones plus threaded brass cones between the turntable and the top of the butcher block.