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In Reply to: RE: Eichmann Topper Resonance Control Device posted by Duster on August 23, 2011 at 18:59:21
They came with a magnetic pad that you pasted on to the speaker and then place the units.
If your speaker resonated much to the feel and the speakers were not intended to resonate like the Beauhorns, they worked. I don't know how these adhere to the speakers, but the stickon magnets lost their ability to hold to the speakers with time.
Follow Ups:
I put some on my old Snell B-minors. Sucked the life right out of them. I suspect they were meant to be heard with their vibrations intact.
Jack
Worked well for my Vince Christian Ltd. subwoofers and satellites. Never liked the idea of another large magnet (or two) being so close to drivers, however. But they did seem to work. Not cheap, though.
I would expect Eichmann to have done the homework and carried it off nicely, but likewise not inexpensively.
I suspect members have numerous cheaper DIY approaches. What comes to mind immediately are a few bags of quartz/amethyst crystals strategically placed, that would do double duty in these regards, both as to mechanical vibration and filtering effect.
Brass weights (e.g., Mapleshade Heavy Hats, and many others) use mass loading to kill vibration.
Choose your poison. (A large rock from your back yard, perhaps?) :-)
I have them somewhere in a closet of old audio stuff.
After the stick on magnets failed to stick, I tried using them as saddlebags. Of course, they were not really tight on the walls of the speakers. I gave up on them probably 10 years ago.
The Tekna Sonics dampers will only be tight on the sides of the speakers if the magnetic pads are aligned properly, when properly aligned they click strongly into place. If one attaches the dampers with the pads 90 degrees out of phase, e.g., if one doesn't keep track of the alignement when unwrapping the dampers, the magnetic pads will not adhere properly and the dampers can fall off... same goes if one mismatches pads from different dampers since they are designed to work in matched pairs. When the pads are properly aligned they are very powerful.
a
Microscans?
I know later they changed their name to something else, don't recall what.
I bought a pair after hearing them at a Stereophile show in, I think, LA. Boy do they work, too well in my case. I put them on my Infinity Quantum IIIs and it tightened up the bass alright, like a noose. So I took them off because I liked the bass the way it was. Big and deep... But I suspect they were more accurate with them on. My newer speakers are better overall but I miss that bass.
Oddly enough I use the Microscans to this day on the Celstion 3's in my study. Their drivers are better than their woodwork and using the dampers cleaned up the sound without having to build new boxes. Hard to predict this stuff.
PS: Mine started falling off the backs of the Infinities also so I replaced a couple of the screws with long one's screwed into the back of the speaker.
Regards, Rick
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