Has anybody ever tried this type of modification before? I'm curious about the effect it would have on paper-coned drivers with less-than-perfect frequency responses.
yes, it has become my standard mod. slicing and adding damping material significantly reduces paper's screaming sound. effect is very audible at high volume.
sliced aluminum cone is the best, can be used full range.
sliced aluminum cone is the best, can be used full range.
Great find. I wonder if the improvement is more pronounced if you copy SS' method.
Is there a particular reason why you didn't use liquid rubber to seal the cuts? That's what MarkMcK did for his paper Tang-Band mods.
Is there a particular reason why you didn't use liquid rubber to seal the cuts? That's what MarkMcK did for his paper Tang-Band mods.
My brother and a friend used to get high and tinker and they concluded that if you glue toothpicks on a floppy cone in a spiral pattern (much like you see on headphone diaphragms) you can get a smoother sound. The only test equipment they had was their "augmented" ears, so.... the inverse of the idea appears to also work well... 😉
I never tried liquid rubber. 'Cascade' spray works perfectly and it is similar to rubber when it dries. I never tried to duplicate SS pattern, seems like too many cuts. 4 or 5 cuts usually are enough to smooth out all cone related impedance bumps.
A reversible trick, if cones are made of polyprop, is to put thin lines of silicone glue that are used for aquariums. Easy to pull off if it has no effect.
Peter
Peter
Actually applying damping material without cone slicing has an insignificant effect on cone breakup. Aluminum cones would be hardly damped at all, even when thick layer of spray is used.
He's referring to glue on PP cones, which can definitely have a measurable positive effect.MisterTwister said:Actually applying damping material without cone slicing has an insignificant effect on cone breakup. Aluminum cones would be hardly damped at all, even when thick layer of spray is used.
Hi ,
is the slicing done only superficially to the paper cone or it is sliced open totally and then glued ?
Regards ,
Somak
is the slicing done only superficially to the paper cone or it is sliced open totally and then glued ?
Regards ,
Somak
MisterTwister said:Actually applying damping material without cone slicing has an insignificant effect on cone breakup. Aluminum cones would be hardly damped at all, even when thick layer of spray is used.
I have no experience regarding metal cones but my Vifa P21 got better with silicone strings, however it did not take away the break up of the cone completely.
I have no measurments to confirm it, so take it for what it is. Purely subjective opinion.
They may been better with slicing but not reversible. In the end I realized I was trying to use them too high in frequency with beaming and so on.. It was easy to take away the silicone anyway.
I will try slicing on cheaper woofers when funds permits an ob speaker project.
You have a real nice result with your experiments and backed up with measurments. Good work!
Regards,
Peter
somakmaitra said:is the slicing done only superficially to the paper cone or it is sliced open totally and then glued ?
sliced completely and then sealed with a damping material
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