A speaker PE got and sold at 69 cents.Over a year ago now.
Al
http://members.shaw.ca/awooley/pictures/FALB.JPG
Al
http://members.shaw.ca/awooley/pictures/FALB.JPG
The 50c wonder maybe ?
On the Fullrange driver website there is a famous tweak that is applied to whizzered drivers that is called the 50c wonder. It involves applying a very small ring of feather light foam to the gap between the main cone and the edge of the whizzer. It serves to stop the same frequencies coming from both the whizzer and the main cone and interacting. It also helps to stop the free edge of the whizzer from resonating uncontrollably. It can help a lot in taming the shrillness that plagues whizzered drivers.
This is probably not what your refering to, but maybe it is.
Shoog
On the Fullrange driver website there is a famous tweak that is applied to whizzered drivers that is called the 50c wonder. It involves applying a very small ring of feather light foam to the gap between the main cone and the edge of the whizzer. It serves to stop the same frequencies coming from both the whizzer and the main cone and interacting. It also helps to stop the free edge of the whizzer from resonating uncontrollably. It can help a lot in taming the shrillness that plagues whizzered drivers.
This is probably not what your refering to, but maybe it is.
Shoog
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