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In Reply to: RE: That's quite interesting posted by geoffkait on November 24, 2010 at 04:18:43
geoffkait, do you have more specific thoughts on crystals working on something besides RF/EMI? I have no technical background, but have always considered crystals to work on the magnetic field genereated by the electric current. Something along the lines of the crystaline structure aligning the magnetic field in a way to reduce interference. In terms of the hematite that I prefer, unclestu mentioned that magnets allow the signal to pass through the magnetic field more quickly, if I understood him correctly. I can see how less interference could equate to smoother/faster passage.
kendo
Follow Ups:
the piezo effect of some crystal with the magnetic effect of hematite. Hold a magnet to hematite and it will pick it up with no problem at all (I was playing around with a piece of bloodstone/hematite last night) The bloodstone was not magnetic but the hematite certainly was. I do not believe the hematite is a magnet itself, but merely magnetically conductive.
You experimentation shows one very neglected fact in the Audio industry: the effect of the magnetic fields being generated or induced. I've never used hematite, preferring to use mu metal or iron/steel shim stock instead.
In fact I began wrapping my connectors ( binding posts as well as RCA plugs) with a piece of mu metal foil. This gives a noticeable boost in clarity.
RCA's in general develop a lot of inductance in the design of the negative contact surface. In making the full circle around the positive conductor, I believe inductances are created. The new WBT and the Eichmann ends are interesting in that they limit that loop, probably one additional reason why they sound very good. I've also experimented, early on, with sawing a thin cut to break the 360 degree loop in an RCA connector. It did improve detail and clarity, particularly in the top end, but the RCA's developed a slight problem in holding together mechanically.
Stu
Your experience with mu metal foil matches my experience with hematite beads in the 4mm and 6mm sizes. I noticed better dynamics (umph) with hematite over amythest. Placing the hematite beads at the midpoints of my IC's and speaker cables(both unshielded), as well as at both ends also yielded better transparency and presence.
kendo
One way to look at it is why crystals work when placed in room corners and on the room walls? It doesn't make a great deal of sense that the crystals are acting on RFI/EMI in those applications, eh?
I wasn't aware that crystals worked on walls and room corners. Would you share your knowledge/experience in this area or direct me to a site/post that would be helpful.
kendo
Peizo electric crystals will absorb RFI and EMI no matter where they are. The idea is to control the amount which reaches your gear. As a collector of mineral specimens I had a large quartz cluster I kept in between my speakers. While there I could never get rid of a certain "hardness" I heard in my system, no matter how hard I tried. One day noticing that the cluster was very dusty, I took it outdoors to wash and the hardness in my system simply disappeared. It was obvious that the cluster was absorbing EMI/RFI and re-radiating it back into the room.
Since RFI can be airborne (think of all the TV and radio broadcasts, Wifi transmissions, etc.), it can appear anywhere in your room.
Stu
He who laughs last laughs best.
:-)
Happy to oblige, Kendo...
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