Building high-end 'tables cheap at Home Despot II

This history class is great! Thanks Jean and Colin.

I feel toward this conversation something like I felt when I discovered jazz. I just played rock 'n roll back in the 1970s, with no awareness at all of jazz. It was wonderful to get into jazz later and begin to discover all I'd missed. Similarly, I just played music back in the 1970s (on some decent audio gear I blundered into), with no awareness even of the existence of high-end audio. It's fascinating to hear these tales-of-the-times and begin to discover the developments and controversies I missed while I was just innocently listening to music.

Hi Lenco lovers!
Just completed my second L75 which will be presented to a friend this Friday. Please have a look in my "system".
Viva le Lenco

Hi Oregon,

Nice Nice Nice. You have a lucky friend indeed! What’s with the seam around the plinth about an inch down from the top? Is this top layer a separate – affixed after the rest was bolted together? Or are these cooling vents for the hot-blooded Lenco?

What wonderful reads on this thread for the past week. Great contributions, especially on the early formative experiences and wide-ranging, full-breadth examinations on the state of our physical art and science. Certainly seems that the momentum of old has taken hold.

With no wish to interrupt this great flow, I must proffer a more pedestrian, “mad scientist” question that’s been rumbling around my head like an idler with a flat spot at 78 rpm. Feel free to caution, put down or ridicule:

Will a 12” “Lazy Susan” (a crude turntable with several dozen balls and a 300 lb. load max), when sandwiched between two slabs of 7/8” marble have any sonic penalty under a Giant Lenco with acorn + isolation footings? We’re talking multi-arm ergonomics here.

Hey Mario, it could conceivably make it sound better a la the Symposium footers - if the bearings dont vibrate. How do you intend to dress the phono IC wires? If I understand your intent - to rotate the table to address the different arms?

Mike

Hi Mike,

Yes, that’s exactly what I’m thinking. Ideally, 18” to 22” diameter rounds – though this is a tougher cut than straight lines. “Lazy Susan” gets masonry screwed to one side then a light coat of mastic strategically brushed on the other “fixing” surface and plop the other marble round on top.

Having all these items on hand, I’ve already checked the rudiments out. Getting a level pedestal (base) is key, since we’re all accustomed to cheating (shimming or foot adjustments) to bring our tables level on off-level bases, stands or what-have-you - in their static positions. But the Lazy Susan mechanism doesn’t produce appreciable error to level in itself.

There’s about a ¼” gap between the marble in which two small rubber wedges can be inserted to secure “stops”. While a drifting, spinning Lenco might be a sight to behold, I’m not sure bringing any Coriolis effect, however slight, into play is a good thing.

Dressing phono cable for payout shouldn’t be too much of a hurdle. Traditional “corner” mounting demands a 90-degree swing for two arms and 180 for three. However, a plinth designed for this application (“thinking outside the box”, Jean once said) could well reduce this to 60/120 degrees depending on the arms and their swing arcs.

The crux question is what you elude to about rattling bearings ... with the huge sink of a Giant Plinth, footed with Acorns + isolators and that atop the first marble round, would vibration still be an issue? If so, what about infusing grease in the "Lazy Susan"?