However... I have seen something intriguing... Loudspeakers with BOOBS!
here are some pictures of them...
http://www.sandlabs.com/wowl_gm/RCA1.JPG to RCA5.JPG.
While I can infer why this strange cone design (larger air surface contact)
I am not sure if the BOOBS have not yet other purposes.
Can anyone shed some light about this ?
Alex
The "BOOBS" have nothing to do with increasing surface area or stiffening
IMO, more likely to be there to break up modes caused by standing waves
being developed at the edge of the cabinet front baffle and in the cone. I
suppose the idea was to smooth out any "lumpy" responses in the drive unit.
Also these standing waves can cause phase smearing making the various
frequency bands arrive at the listeners ears at slightly different times.
This makes the speaker not sound like a single point source and there has
been many attempts to rectify this situation over the years. Most, like this
idea, may have looked great in an anechoic chamber but were completely
useless in the real world. I am sure that it fooled audiophiles for a while
who seem to forget to use their ears!
Probably unsuccessful as current SOTA drivers do not use this scheme, best
ask Bob Heil I am sure he would have the answers and probably a good
historic perspective as well.
Conrad G0RUZ
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