Quote Originally Posted by LowOhms View Post
Hi GM,



I would hope this Forum is " big" enough to allow some diversity of thought. Non touching of polarities, in the two areas I have mentioned herein, ( H.V. winding and amplifier-to-drivers ) were specifically ( and purposefully ) used in the RMAF demo room in 2016 by Serious Stereo, and they will be again, this October 2017.

To see a photo, taken by the Stereophile magazine reviewer, access the URL below, and look at the photo of the two monaural RED JJ 2A3-40 power amps, and VIEW how all the leads are very carefully orientated !


RMAF 2016: Sunday at the Show with Herb | Stereophile.com




Jeff Medwin.....Low Ohms.
My work gets my brain so screwed up, it takes me a while to digest the stuff in this thread.

Yes- I see the separated black and white wires in the picture. Looks like could be the 2 x 12AWG-per-polarity (9AWG!) Mil-spec setup you described earlier in this thread.

I see what looks like a 604, rear mounted in center of baffle of "transmission line speaker". Gonna study this design- and MLTL as possible new future 604 enclosures.

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Megger Ohm meter. I've heard of them- but never saw or used one. Understand the concept well- a weak circuit may show no resistance without a load. We have electronic liquid sensing monitors on our petrol tanker equipment that are supplied thru a circuit that runs from battery then goes down a rabbit hole in the massive wire bundles in the truck cab area for its switching and CBs. Then heads back along the frame to the truck tank monitor- and splits to the 7-way plug and back to the trailer monitor. Many opportunities for weak link. The monitors use about 0.2 amperes. If a monitor fails while loading a load of gas at the refinery, the loading process terminates, and because of sequential blending, the partially loaded product cannot be sold. In fact, my company has to pay to have it disposed. I use a spotlamp bulb (3 amps) as load at the monitor end of the power supply circuit to make the circuit fail and get the intermittent weak link to come out of hiding.

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I think this open baffle setup is breaking in. Currently using Mac Mini computer streaming college FM radio stations thru iTunes (iTunes is my nemesis- but sound quality forces me to try to figure its interface out). Then USB out to tube DAC- then RCA cables direct into 300B monoblocs (no preamp- volume control in streaming program). Seems to have real good synergy.

I want to gather info, specs, and some pics of this OB build and make a small document for the forum. Am trying to learn how to use Layout program from Sketchup. Any recommendations for simple draw program? I think with some application, Sketchup layout is gonna work for me I hope.