loach71
07-27-2007, 02:51 PM
I've just finished popping out the mass rings from twelve 2235H drivers.
Doing the first one was a little scary. The last woofer was one I purchased off ePAY -- it always had a little buzz when it played. After I cut off the dust cap I found out why. The reconer who worked on this woofer just loved Bostik -- he / she / it laid it on so thickly that it dripped down from the mass ring onto the kapton voice coil former -- it would hit the pole piece when the woofer was driven hard.:barf:
After an hour of cleaning with MIBK and Q-tips all the extra Bostik was removed. I hooked up the woofer to an oscillator and a BGW bench amp -- VOILĄ -- NO BUZZ.
Doing the first one was a little scary. The last woofer was one I purchased off ePAY -- it always had a little buzz when it played. After I cut off the dust cap I found out why. The reconer who worked on this woofer just loved Bostik -- he / she / it laid it on so thickly that it dripped down from the mass ring onto the kapton voice coil former -- it would hit the pole piece when the woofer was driven hard.:barf:
After an hour of cleaning with MIBK and Q-tips all the extra Bostik was removed. I hooked up the woofer to an oscillator and a BGW bench amp -- VOILĄ -- NO BUZZ.