Technics SL-1700 feet

You might look here:  https://mnpctech.com/turntable-feet-replacement-isolation/

I have no experience (yet) with their products, but just ordered a set of the large feet for my JVC turntable.  I'll report back once I get them.  

The JVC turntable has springy feet and I have springy floors which adds up to a lot of sensitivity to footfalls.  I have the turntable sitting on hockey pucks at the moment, which are much better at managing vibration and sound better than with the stock feet.

If your table is on a solid surface something like the Isonoe feet might be better.

The table is the original SL-1700 but it does have the spring platform.

@john421 just add ISONOE and you will be fine, for higher budget buy AT616 Pneumatic Insulators (very rare) as they can support much higher weight up to 130lbs (can be used under any turntable, including superheavy ones if you will ever upgrade your SL1700)

The spring suspension on the SL-1700 is excellent. The mounting should be to the plinth via aluminum brackets if it’s like the SL-1700mk2 which then suspends the TNRC floating base that carries the spindle and tonearm. Since the spring suspension is already giving you plenty of isolation, you don’t have to spend a fortune on feet. 

Looking at photos 11&12 on pic click https://picclick.com/Technics-SL-1700-Turntable-Plinth-Genuine-item-Cabinet-392013998923.html#&gid=1&pid=11
the suspension is the same design in principle. Drilling and tapping the holes for the old foot mounts to accept the SL-1200mk2 feet should be just as easy as on my SL-1700mk2. Don’t drill all the way, because you need to put a screw in the bottom of each suspension tower to secure it to the plinth. I took regular sheet metal screws, #6 iirc, chucked them into a drill and held a flat file to the heads to make them fit through the suspension tower. It is much easier than it sounds. Really, it is.