I would de-BS the amp before selling. Then have fun doing a teardown of those BS cans and try to expose the BS one layer at at a time!
They look like big ferrite beads but their connection to a single point in the circuit nixes that.
Reminds me of one of those magic boxes that they used to sell as a tweak that you would plug into an outlet adjacent to your sound system.
Reminds me of one of those magic boxes that they used to sell as a tweak that you would plug into an outlet adjacent to your sound system.
Not a good example.
Properly done those work. They suck noise out of the electrical system. Clearly show with measurements.
dave
Well, no, not necessarily since they use permanent magnets which are often fully saturated magnetically and thus don't respond to nearby currents (if they did, they would de-magnetize - in fact for large nearby currents this does happen, and this is called a degaussing coil!).
All materials are magnetic: ferromagnetic, anti-ferromagnetic, ferrimagnetic, paramagnetic or diamagnetic are the main categories. Most casual uses of "magnetic" means ferromagnetic or ferrimagnetic, which have large relative permeabilities and are often very non-linear in magnetic response. And for those materials there is wide variation the degree of magnetic hardness (coercive force), some making good permanent magnets (magnetically hard), some only able to respond to external fields while they are present (magnetically soft).
But what they are claiming is that permanent magnetic fields affect the electrical properties of copper wires, and since copper is paramagnetic this is irrelevant as the effects are tiny and linear, so simply superpose harmlessly on top of the rest of the behaviour and a constant magnetic field applied to a linear material has no affect on that materials a.c. response. You'd have to route your copper wire near a neutron star to see strong enough magnetic fields to cause measurable effects on its electrical behaviour I suspect!
If the wires were made of chromium, BTW, which is anti-ferromagnetic, I am not sure whether there would be an effect, but most "non-magnetic" materials are paramagnetic or diamagnetic and basically are oblivious to DC magnetic fields in practical applications - and its a good job they are, or MRI scanners might be difficult to make work 🙂
Then it’s a capacitor as it can only shunt the AC line either to neural or to earth or some combination.
No esoteric science and a well designed component shouldn’t require it unless the power line was excessively noisy in the first place.
I’m not going to dig up a schema but the caps are very important.
it is a parallel filter.
dave
@Mark Tillotson,
I've seen (heard, really) some quite interesting damping effects when neodymium magnets are brought near copper tubes that I cut for a xylophone. My fingers were also part of the system, absorbing vibrations from the magnet.
I've seen (heard, really) some quite interesting damping effects when neodymium magnets are brought near copper tubes that I cut for a xylophone. My fingers were also part of the system, absorbing vibrations from the magnet.
Abstract, I have done the copper tube/magnet thing.
There is indeed significant mechanical damping demonstrated. This is due to the fact that the magnet moves creating a moving B field which creates a dB/dT and induces an eddy current in the tube.
While a great demonstration of eddy current effects, it has nothing to do with what happens when a coil or wire do not move in relation to the magnet (or its field) or a static magnetic field (like produced by a permanent magnet).
There is the Hall effect, but that's another rabbit hole that goes nowhere as it relates to "Speed of Light" technology.
There is indeed significant mechanical damping demonstrated. This is due to the fact that the magnet moves creating a moving B field which creates a dB/dT and induces an eddy current in the tube.
While a great demonstration of eddy current effects, it has nothing to do with what happens when a coil or wire do not move in relation to the magnet (or its field) or a static magnetic field (like produced by a permanent magnet).
There is the Hall effect, but that's another rabbit hole that goes nowhere as it relates to "Speed of Light" technology.
I was serious when I said that those snake oil cans be removed from the amp, followed by their de-processing to reveal the "secrets" for others to see.
If it turns out that there is something worthwhile found (there won't be), then sharing the discovery to build DYI versions is perfect!
If it turns out that there is something worthwhile found (there won't be), then sharing the discovery to build DYI versions is perfect!