Axiom Home Page Forums General Discussion Home Theater bi-amping with m80s

I expect everyone to be building their own amps soon.

Electricity is so damn unique, nothing acts like electricity does. I wonder how long it took the guy who discovered electricity to understand it???

Wasn't he that guy with the kite and the key that tried to get hit by lightning.

I think it was the guy who tried to play with his eel.

He should've listened to his mother.

Thanks. I'm really not trying to be a pest and am just curious. I hope you don't think otherwise with all my silly questions.

Considering that, I've been trying to find information regarding the operation of a voice coil to describe just how electrical current flows through the windings to position the driver to the fixed magnet. I'm not having much success. Can someone either point somewhere, or explain this?

It's just an electromagnet, if you want more information, search on that.

An electromagnet, like any other magnet will attract differing poles, and repel similar. But an electromagnet has it's poles, and strength determined by the electricity flowing through it. More flow, a stronger field, reverse the flow reverse the field. So when it is next to the fixed magnet it'll either push away from it, or be drawn to it, with various strengths following the signal.

Mike, it depends on how much detail that you're looking for. Here's a very brief explanation. Here's more detail, although still not exhaustive.

Thanks John. I am familiar with electromagnets, but on a much larger scale; like multi mega watt generators. The whole reversing electrical current through the coil is what was throwing me off. I think I just need dakkon to refresh me on electrical theory.

Thanks for the links. They are very informative.

in a generator you have a constant 60hz, the frequency is dictated by the prime mover.... in the voice coil, the frequency is controlled by the source, the Cd, SACD, what ever it may be, and in the digital world, its a stepped DC, think of it like a constantly moving CRDM, the Digital-analong converters smooth the signal, basically a filter circuit. Actually the CRDM pretty much works the EXACT same way a voice coil does with the electro magnetic filed. but rather than the clamping force, you have the electro magnetic field, with a rare earth magnet behind it, for arguments sake when the electro magnet is + in respect to the rare earth magnet, it will "push similar poles" when it is - it will (pull dissimilar).. as it pushes and pulls it disrupts the air, creating noise...



now, i am assuming you still remember how CRDMS work :p