Larry, I don't remember the notes and harmonic after-ring frequencies involved; however, the last time I experienced what you describe on a M&H, it was due to a couple loose components in the tension resonator (spyder). Yeah yeah, I know, tension resonator components do not loosen up. To continue... It took a while to figure out because the resulting illusions were "top-side" sounds. It turns out that the sounds were being generated from below, and telegraphed above. A couple of the turn-buckle [type] assemblies were lose, causing their washers -- in fact that entire effected arm -- to hum like a ten penny finishing nail hit with a greasy ball peen hammer. Regards, Jim Harvey RPT [with special thanks to Brother Dave Gardner; been waiting to use that ball peen hammer line]. At 04:50 PM 9/10/99 -0700, you wrote: >On a fairly new M&H BB. > >Both G-1 and A-1 have an objectionable after ring at harmonic C#-5. I've >cut ends of the damper felts, replaced the felt. Cut inside legs of >damper felt, cut outside legs of damper felts. Nothing seems to quiet >this harmonic. Could it possibly be the strings and their longitudinal >vibrations? [etc... cut]
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