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In Reply to: RE: Masochists ? posted by Bill Fitzmaurice on May 19, 2023 at 12:59:59
Absolutely right!
There were so many things that were the build / listen /modify loop with very few acoustic measurements.
It was the TEF machine that allowed one to measure the loudspeaker's phase and that didn't happen until the late 70's and become practical in the 80's.
I heard an old WE driver from a theater speaker and it sounded great. looking at the insides, except for materials, it was a modern compression driver = there was very little that could be improved in the acoustic part in many decades since. That was something to think about, the process that lead to that driver design.
Tom
Follow Ups:
Jim Hunter, Klipsch Historian, retired Chief Engineer showed me a WE 555 unit the he says the Atlas driver was based on and he was amazed at how good it measured. Pretty impressive those Engineers were almost 100 years ago!
I agree fully! the ones that got it, really got it and left little to improve other than new materials mostly and to a degree computer modeling neither of which they had.
I don't remember which theater driver it was i heard but it sounded just fine to me.
At a trade show a person asked why the old drivers didn't have power compression?
Good question but the answer is the glue that was available for the voice coils let go at around 150C and so the wire never got hot enough to suffer from that.
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