Tekton Double Impacts

Hi Al, 
Well, once you explain it that meticulously it does begin to make considerably more sense.  That RF transformer is doing some serious work 😊

My amazement is the 6SN7  is used in this manner so apparently effectively.  In my pre conditioned mind that tube is thought of as one of the iconic small signal tubes and not a device used to drive speakers (especially of the 4 ohm variety). Again,  fascinating. 
Charles 

@mac48025 ; @klh007 ; @corelli

If I go with the Herbies Audio 'Giant Threaded Stud Glider' product, do you recommend going 1/4" 20 in the 1/2 inch length so that the sliders are flush with the speaker base, or would you go with a slightly longer length to offer up some advantages...like elevation and angling, etc.?

I haven't looked underneath the speakers.... @mac480245: you mention that the bass leaks from the screw holes... if they are open ended I would not want to damage anything with a long screw.

If I do a hybrid approach and use the Soundcity Outrigger that @corelli recommends, do you feel that placing Herbies Giant Fat Gliders (not the screw in type) under the Soundcity auto leveling / rubber feet versions would offer further benefits in isolation / sound quality?

This approach (I think) allows me to easily move the speakers because of the gliders and provide (I think) the additional stability outriggers might bring vs going with the Herbie Threaded Gliders alone.

Thoughts?

Thanks!

Al,

youre a marvel. Thanks yet again for explaining something I couldn't previously conceive in a manner that I understand. 

Charles,

teajay mentioned he is using the holy grail of 6sn7 tubes. Maybe that accounts for him being able to drive the microZOTL to its extreme without any harsh results? Just a thought.

David,

I'm using the 1/4/20 giant gliders with 1 1/2 studs for greater lift off the carpeting and more distance for leveling as my basement floor isnt real level. No issues with the threaded studs entering the speaker cabinet.

david_ten

If you use the studded glider directly to the speaker, agree with mac at 1.5".  If you use the outriggers, the steel is 1/4" and you would need another 1/4" for a brass acorn nut/washer on the top of the outrigger and then another 1/4" to adjust for uneven flooring, then the jam nut---so you will need the 1"  1/4-20 glider.  Also, I opted for the knobs from soundocity--they are only $3 each and look nicer than the acorn nut.
I attached the outriggers with hexhead SS bolts/washers, 1 1/4 length 1/4-20.
Either way ought to work well.  I would keep the speakers vertical.  Not a fan of self leveling footers.  Way to much wobble for me.  I'm a believer in a solid/stable footing for speakers to avoid "micro wobble" induced by the woofers which in my mind might slightly add some element of haze.  But I'll be the first to admit I have not spent hours, days, or weeks comparing all the many options out there.

Teajay,
The tungsol round plates are very nice tubes, but aren't the only game in town. I have a big collection of 6sn7's.
 IMS, I think the 1952 Sylvania bad boys are better. They have a bottom getter and 3 holes in their plates. Give them a try, if you can find them. Big bass, dynamics, and beautiful tone. 
In my preamp they are much better maybe not in the LTA, but worth a try.
The tungsols are overrated and overpriced imho.

Joe