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Never marketed by Vans Evers, but effective in its own way. Its a simple piece of Brass shim stock with slits cut into it and then twisted slightly. It's is designed to "wick" away unwanted vibration.
Pix shows it on top of a speaker cabinet, where there is a slight (audible but nothing that jumps out at you) difference. Works similarly over component chassis, particularly over power supply ( transformers and such)
Haven't played around with it very much except in experimenting with placement ( idea is well over a decade old).
Notice that the slits are graduated for fuller frequency range. My guess if you know the resonance frequencies involved, you could cut more appropriate lengths and select more appropriate thicknessea. For example power supplies in the US would be set at 60 Hz and its second harmonic, 120 hz ( rectified AC frequency).
Don't have time to play around with the idea, but I thought I'd share since Mike VansEvers is no longer pursuing this idea. Incidentally, using thinner stock he has placed them on some of his last PLCs, on the actual AC lines.
Follow Ups:
Similar to the Eichmann Topper resonance control device intended for use on top of components and loudspeakers. I use a set of three placed on each of my main audio system loudspeakers and stereo subwoofer system enclosures. While some folks might consider their effect to be subtle, I find the damping effect to be remarkable, with substantially better pinpoint focus and increased sense of transient speed as a result. YMMV
Duster,
When I saw that cut up piece of metal, I thought he must be another whack-job, but I did a search. I thought Mike VansEvers' concept of "dynamic neutrality" did make a lot of sense. It reminded me of what I like about my Sependor BC-1 speakers.
I concluded from the supplied link, that he has thought this out and he does believe what he says (not a cynical manipulator). I will reserve judgment on his tweaks, until I have actually tried them. The good thing is, he has tweaks that are not expensive to try.
Dave
that adds to the above link... The first parts are the same...
Stu
Doesn't say much about his actual tweaks, but Mike and I are very sympatico in terms of tweaks and in our attitude towards them. Have you a link to part 2?
See above. Someone else posted it.
What is says about linking to the artist really rang true for me.
Dave
is a very cool guy and not only because I was a dealer for him. He has now dropped out of the audiophile market, preferring to build for the music trade instead.
He had many innovative ideas and experimented constantly, although I believe doing production work kinda bored him....
We used to chat occasionally exchanging ideas (I probably gained much more than I gave), but he was always pleasant to converse with and never discounted anything until trying them out first. Always open with his explanations also.
I still use his ideas on "String Nodal resonance" where by a weight attached to a cord (In his case power cords) could tune the tonality by sliding it up and down the length. He devised a contraption using washers and a wing nut to secure the weight of the washers. Close to the ends gave a distinctly brighter sound and the closer to the middle almost no effect at all. I liked the position about 9 inches from the end where the upper bass seemed to be best.
Of Course YMMV
I bought a VansEvers Reference Model 12 Analog power line conditioner from Mike Vans Evers at the Stereophile show in San Francisco back in the 1990s. I spent time traveling with him to various rooms at the show (some memorable) with very insightful conversations. It would be great if he would produce and market his PLCs for both pro audio and the audiophile market without hassle and adequate reward.
Image: VansEvers Reference Model 12 Analog power line conditioner (Spearinol oil capacitor-based PLC). Transient impedance switches set to positions 1 and 4. Stock IEC inlet replaced with Oyaide Power Inlet R (platinum + palladium plated phosphor bronze contacts) IEC inlet. DIY Acrolink 6N-P4030 power cord (10 AWG ultra high purity, 6N uniform crystalline structure copper) terminated with Oyaide P-004 Beryllium AC plug and Oyaide C-004 Beryllium IEC connector (2 foot). Power cord plugged into Oyaide R1 Beryllium AC outlet installed at the wall. Stock feet replaced with a set of four Herbie's Audio Lab Tenderfoot feet; PLC then placed on laminated bamboo vibration control platform + plinth. Set of three Eichmann Topper resonance control devices strategically placed on PLC top panel.
AC delivery to my entire main audio system (including two Bryston power amplifiers) is first conditioned by the VansEvers Reference Model 12 before downstream power distribution and further power line conditioners placed in series.
The gestalt of the VansEvers Reference Model 12 Analog PLC is in effect a more organic sonic signature than that of comparatively more brittle sounding unconditioned AC delivery IME when connected directly to the wall. YMMV
Very under appreciated builder
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