Nude Turntable Project

halcro,

No, I didn't try a stationary grove test.  After moving the table away from the corner the increased clarity when playing moderately loud music (I probably never exceed 90 dB, unlike some) was proof enough I didn't feel the need to test any further.  Noticeable feedback (howling) was never a problem although I assume the problem was low level feedback from the pickup being in a high pressure zone area.

Thanks for the kind words Jim,
Some think that the Herzan is an 'overkill' for our application......and at the prices for their 'active' bases, it is an option few would contemplate.
I haven't tried any other bases although I wanted to try the Minus K many years ago.
It simply wasn't suited to my isolated turntable/armpods arrangement and I concentrated on making my cantilevered supporting shelf more rigid in the meantime.
I'm sure your Vibraplane gives you most of the same improvements I've described.....
It's hard to describe all the subtle effects one can hear once ALL spurious vibrations are removed.....
Most of the records I own where the high-frequencies at times became strident and even sometimes unbearable.....are now listenable. It doesn't mean one is not aware of 'hot' recording or mastering techniques.....it just clarifies exactly what is occurring.

Glad you enjoyed the Thread Jim and thanks once again.

Regards
Henry

Cost of course is relative.......
Any serious analogue lover who is in the market for an $8,000-$15,000 LOMC cartridge......should seriously consider a Herzan Active Vibration Isolation System and a $300 vintage MM cartridge instead......
There is really no comparison IMHO....🙈

@halcro at risk of seeming like a stalker (after getting the Palladian on your tip) I've reached out to a Herzan about adding a TS-150 to my rig. As I suffer from a very seismically active environment I think it may be just the ticket

FWIW, You can find Herzan isolation tables for sale on eBay as industrial surplus items, and in that format they can be quite affordable.  (They really ARE most often used for electron microscopes or to isolate sensitive industrial processors of one kind or another.)  Problem is they are often so massive as to be unsuitable for our sort of use. But once in a while.....

Seems to me also that I once figured out Herzan make the MinusK or the Vibraplane, or both.