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In Reply to: RE: Apogees and ethics - comments posted by josh358 on February 16, 2012 at 06:55:17
What I was talking about was dynamics.
All You say is right when talking about output.
But dynamics are all about having a non restriction or as little as possible. And here a ribbon is unbeatable... except for maybe plasma. hehe
The restriction for a membrane will be exponential and therefore the dynamics will decrease exponentially.
Single ended or double pole piece are another discussion as it is mainly a linearity and efficiency one as such. But both will suffer from restriction from the suspension.
The one who succeeded was the one who didn't know it was impossible.
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Why would it be nonlinear, though? I'd expect the deflection to be pretty linear until you get near the elastic limit. Which you don't want to do because you'll stretch or break the diaphragm.
What I mean to emphasize is that suspension equals compression and thus less dynamics.
The one who succeeded was the one who didn't know it was impossible.
Is it? I always assumed it was pretty close to Hooke's Law, that is, linear. In two dimensions, of course, with more compliance laterally than vertically.
"Is it? I always assumed it was pretty close to Hooke's Law, that is, linear. In two dimensions, of course, with more compliance laterally than vertically. "Not really if You look at the function of a suspended membrane witch is not a spring.
You could though try to integrate Hooke's law into the calculation of air volume that is very non linear for a suspended membrane.You probably understand me now? :)
The one who succeeded was the one who didn't know it was impossible.
Edits: 02/16/12
Sure. The next question, then, is which distortion mechanism predominates at high excursions -- the nonlinear displacement, or the nonlinear magnetic field?
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