As this and the last thread are mostly about preconceptions/Dogmas, I have to relate my recent clamp adventures while visiting various soundrooms including various of my 'tables (Garrards, Lencos). My own experience/experiments with clamps (I have several, ranging from one in metacrylate through lighter ones to a solid lead one by Maplenoll) and Lencos were uniformly disastrous, as I had related back in the days of the original thread, and I had forever turned my back on this particular "improvement". Visting one, I saw the fellow using a clamp and asked him if it helped. To this I received the "news" that clamps more securely coupled the record to the platter/record player to achieve an improvement, as if I had never heard of a clamp (this the result of The Clamp Dogma, in which a person steeped in it, hearing me ask about it, must assume I had never heard of a clamp or I would know it HAD to be an improvement). He didn't answer my question about whether or not it was an improvement, and tired, I let it be.
The next fellow had an extremely high-end system, and hearing my Lenco (Dynavector 507 MKII/Dyna 17D MKIII) sounding so pedestrian (I was actually falling asleep in the listening chair), I said, fed up, "Let's do a before and after listening test!" He agreed, we played one track, and then played it again sans clamp. WHAT a difference, the Lenco POWER returned in all its Mightiness, with incredible dynamic spread (from softest to most SLAMMING) and bass (DEEP and powerful), the difference amounting to the difference between an eagle with pinned wings to an eagle soaring among the mountain peaks, the Lenco was now unfettered and ALIVE. The music became entrancing and irresistable with that familiar Amazon in Full Flood sense of limitless untapped fluid power in reserve, and the fellow was delighted and behaved as if he received a whole new high-end system! He had been listening to the Lenco (fettered) for weeks, due to his unexamined assumption (that clamps automatically improved the sound). I wonder how many fellows are listening to crippled 'tables (heavily or lightly modded without first hearing the Lenco "au naturel") due to unquestioning attitudes?
The experiment with the ceramic ball bearing shows just how sensitive the Lenco is to any "interference", the Lenco being evidently a SERIOUS case of the whole being MUCH greater than the sum of its parts. I now understand that this is due to a series of "accidents" which focuses in on a perfect balance of torque (a lot but not too much via its heavy 1800-RPM motor and delicate - as opposed to rim-drives - idler-wheel coupling) vs inertia (just right). In my experience as well, the Lenco seems immune to power conditioning - I've heard it in a few systems with some pretty exotic waveform regenerators - though usually not hampered (it just ignores them). Lenco advertising claimed a no more than 1% deviation from "perfect" for up to a 13% fluctuation in voltages!
In fact, being the sum of a variety of parts with astonishing results, the Mighty Lenco is the 'table the Supreme Being designed and listens to ;-), a happy accident of a variety of accidental parts which amounts to a near-supernatural end result, when properly restored and replinthed. I am now very curious to see what the Reinderspeerter top-plate brings to the party, as it leaves the Lenco parts untouched, and adresses the one "weakness" (the relatively flimsy top-plate, hleped along by glass reinforcement and Direct Coupling).
Now, systems being a case of various synergies and organic balanced ecologies (when successful), it is possible that clamps might help in some cases, and power conditioning in others, but I advise all to actually listen to the effect of any modifications before making any assumptions, as the Lenco is itself a balanced ecology (and with no context, how does one know that one's modification hasn't in fact killed the goose that lays the Golden Egg of Audio Bliss, and end up with something sterile and thin?)! In designing your various "Super Lencos" as well as simple tweaks (like clamps), always compare to an "unfettered" Lenco (i.e. with minimal intrusive mods).
Anyway, have fun all, and never stop questioning!! Now, I'll get back to my latest successful venture in synergies! More audio adventures to relate in the near-future of course.