![](/boards/images/icons/default/book.gif) Re: bi-amping with m80s
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Joined: Feb 2009
Posts: 3,466
connoisseur
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connoisseur
Joined: Feb 2009
Posts: 3,466 |
I expect everyone to be building their own amps soon.
Pioneer PDP-5020FD, Marantz SR6011 Axiom M5HP, VP160HP, QS8 Sony PS4, surround backs -Chris
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![](/boards/images/icons/default/book.gif) Re: bi-amping with m80s
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Joined: Nov 2008
Posts: 1,789
connoisseur
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connoisseur
Joined: Nov 2008
Posts: 1,789 |
Electricity is so damn unique, nothing acts like electricity does. I wonder how long it took the guy who discovered electricity to understand it???
My Stuff :
M80's QS8's VP150 EP800 Denon 4802 Emotiva XPA-3 Samsung BD-P3600 Sharp 65 Inch Aquos LCD
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![](/boards/images/icons/default/book.gif) Re: bi-amping with m80s
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Joined: Aug 2009
Posts: 6,015
axiomite
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axiomite
Joined: Aug 2009
Posts: 6,015 |
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.
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![](/boards/images/icons/default/book.gif) Re: bi-amping with m80s
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Joined: Jul 2006
Posts: 12,077 Likes: 7
Founder, Axiom Upgrade Club shareholder in the making
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Founder, Axiom Upgrade Club shareholder in the making
Joined: Jul 2006
Posts: 12,077 Likes: 7 |
I think it was the guy who tried to play with his eel.
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![](/boards/images/icons/default/book.gif) Re: bi-amping with m80s
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Joined: Mar 2005
Posts: 7,463 Likes: 1
axiomite
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axiomite
Joined: Mar 2005
Posts: 7,463 Likes: 1 |
He should've listened to his mother.
*********** "Nothin' up my sleeve. . ." --Bullwinkle J. Moose
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![](/boards/images/icons/default/book.gif) Re: bi-amping with m80s
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Joined: Jul 2004
Posts: 4,444 Likes: 16
connoisseur
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connoisseur
Joined: Jul 2004
Posts: 4,444 Likes: 16 |
The speaker doesn't just push out, it pulls in too. The audio signal is alternating current. For parts of the signal which are above 0, the P output device is active, for parts of the signal below 0, the N output device is active.
Actually, the P device is run slightly into the negative (even though it is very inefficient to do so), and the opposite for the N. This minimizes zero-cross distortion.
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?
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![](/boards/images/icons/default/book.gif) Re: bi-amping with m80s
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Joined: Feb 2009
Posts: 3,466
connoisseur
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connoisseur
Joined: Feb 2009
Posts: 3,466 |
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.
Pioneer PDP-5020FD, Marantz SR6011 Axiom M5HP, VP160HP, QS8 Sony PS4, surround backs -Chris
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![](/boards/images/icons/default/book.gif) Re: bi-amping with m80s
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Joined: May 2002
Posts: 10,654
shareholder in the making
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shareholder in the making
Joined: May 2002
Posts: 10,654 |
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.
-----------------------------------
Enjoy the music, not the equipment.
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![](/boards/images/icons/default/book.gif) Re: bi-amping with m80s
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Joined: Jul 2004
Posts: 4,444 Likes: 16
connoisseur
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connoisseur
Joined: Jul 2004
Posts: 4,444 Likes: 16 |
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.
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![](/boards/images/icons/default/book.gif) Re: bi-amping with m80s
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Joined: Feb 2004
Posts: 1,863
connoisseur
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connoisseur
Joined: Feb 2004
Posts: 1,863 |
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
Last edited by dakkon; 07/04/10 03:52 PM.
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