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Old 7th August 2012, 08:20 PM   #211
ondesx is offline ondesx  France
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Quote:
Originally Posted by SY View Post
If you take the assertion about tweeter inductance to its logical conclusion, a coil with perfectly conducting wire couldn't give you any HF output since it would be purely inductive.
If I'm correct, we are speaking here of a "Full-Range" driver ? Don't we ?
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Old 7th August 2012, 08:24 PM   #212
SY is offline SY  United States
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Regardless.
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Old 7th August 2012, 08:32 PM   #213
ondesx is offline ondesx  France
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Originally Posted by SY View Post
Regardless.
Please, look at the impedance curve of several tweeters and several full-range... I don't understand what you try to prove.
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Old 7th August 2012, 08:42 PM   #214
adason is offline adason  United States
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I tried to unsubscribe from this thread, but it did not let me. I want to get out!
Goodbuy! No more!

Last edited by adason; 7th August 2012 at 08:52 PM.
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Old 7th August 2012, 09:23 PM   #215
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Originally Posted by ondesx View Post
The complex impedance of a voice-coil have a value dependent of the DC resistance and of its inductance L. While the first is independant of the frequency, this is not the case of the later.
Yes this is true. And I am sure you can cite even more things that are true and that have no bearing on the physical issues that determine wheter this driver will 'work' or not.
Too bad, I thought you really had something there.

jan
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Old 7th August 2012, 10:37 PM   #216
SY is offline SY  United States
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Quote:
Originally Posted by ondesx View Post
Please, look at the impedance curve of several tweeters and several full-range... I don't understand what you try to prove.
I've measured one or two over the years. The rise in impedance with rising frequency is generally not the cause of high frequency limitations, it's mass, stiffness, and geometry.
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Old 7th August 2012, 11:09 PM   #217
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Mixing up cause and effect is not uncommon.
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Old 8th August 2012, 12:02 AM   #218
sreten is offline sreten  United Kingdom
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Quote:
Originally Posted by ondesx View Post
My answer is the same that I wrote to SY... There are other similar
drivers suggested and built by guys who are sort of "genius" in the
area of professional audio...

Are you a genius in professional audio ?...
Hi,

There has never been anyone remotely resembling a genius
regarding audio development and there never ever will be.
(Clever yes, genius no, why? You work out the inevitable.)

Some far sighted types like Blumlein pre WW2
but unfortunately he didn't survive WW2.

You are in no position whatsoever to define "genius".

Genius's don't ignore schoolboy physics, they redefine them.

I suspect your are a victim of believing marketing speak
"trash talking" and "revolutionary developments" without
having any real clue as to the real obfuscation involved.

No I'm not a "genius in professional audio" but i can
guarantee I know shedloads more about the subject
than you do, if your going to resort to the argument
you don't know much so neither does anyone else,
IMO you have no real idea of what is expertise

Believe the "hype" if you want and "believe" all engineers
are full of the proverbial regarding audio if you like, but
when push comes to shove who would you prefer to
service the brakes on your car, me or a "genius".

rgds, sreten.
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Last edited by sreten; 8th August 2012 at 12:11 AM.
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Old 8th August 2012, 12:46 AM   #219
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Since the originator of this thread left, for me it is Goodbye! to Goodbye ! No more speakers with cones !


vac
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Old 8th August 2012, 04:38 AM   #220
ondesx is offline ondesx  France
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Quote:
Originally Posted by SY View Post
it's mass, stiffness, and geometry.
OK, this will be my last post on the present thread. Look SY, your statement is simply untrue. For the incidence of the mass on the response curve, please do a very simple experiment : take a full-range driver, measure its frequency-response.

Then firmly glue some mass on the durst cap, the double or even the triple of the membrane mass for example. Do again the measure of the response curve.

You'll verify by yourself that both curves are very similar. The big difference will be... the amplitude of the response, i. e. the power output, but not definitely the frequency response...

Good bye and good luck to every one.
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