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planar transducers

Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=105433
Printed Date: April 30, 2024 at 7:00 PM


Topic: planar transducers

Posted By: theetimurban
Subject: planar transducers
Date Posted: June 12, 2008 at 10:44 AM

I was recently asked how planar transducers work, and I said something to the effect of, " they convert electrical energy into acoustic energy," to which I was asked, "Well, how?" And I realized I have no idea. I've been trying to find some literature on it, but I can't really find anything that either a) makes sense, or b) explains anything other than what I already know. When I searched this site I got only one link, https://www.the12volt.com/installbay/forum_posts.asp~TID~100432~KW~forbidden~PN~0~TPN~1 informative as it is... does anyone know where I can find information on how transducers function. Or if anyone is feeling generous, maybe they could explain it to me? Thanks much.




Replies:

Posted By: DYohn
Date Posted: June 12, 2008 at 11:35 AM
A planar transducer uses a flat diaphragm (or several of them, usually interleaved) driven like any other dynamic loudspeaker using current through a voice coil (usually located along the edges of the diaphragms) in a magnetic field from permanent magnets aligned with the coil.  The flat diaphragm vibrates back and forth inside the magnetic field as an analog of the signal frequency.

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Posted By: theetimurban
Date Posted: June 12, 2008 at 3:34 PM

Exactly what I was looking for, thanks. One more question though, what allows them to be more efficient and have better sound staging than lets say a "conventional dynamic driver"?



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Posted By: DYohn
Date Posted: June 12, 2008 at 4:54 PM
theetimurban wrote:

Exactly what I was looking for, thanks. One more question though, what allows them to be more efficient and have better sound staging than lets say a "conventional dynamic driver"?


Greater efficiency is most likely due to smaller moving mass, shorte Xmax and lower gauge VC wiring.  Better sound staging is not necessarily true as it depends on the application. 



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Posted By: theetimurban
Date Posted: June 13, 2008 at 5:20 AM
Oh okay, that makes sense. Hey thanks for the help.

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