Aussie Geoff
Well-Known Member
Having recently recapped etc my nac12s and nap160 ( "it started with a broken switch" thread) i have been enjoying music again after a few years away from it. On occasion I have noticed a resonance when listening to pieces with heavy bass , I thought the speakers were making nearby glass cabinet doors vibrate or similar , i never suspected the kans. This morning when listening to "Soul Brothers" ray charles and milt jackson album (streamed from Tidal) there was very bad buzzing from the direction of the suspected furniture, upon closer inspection it was obvious that the speaker cabinet was the problem. When i hold the speaker during these times you feel the front baffle move in sympathy with the bass notes while the rest of the cabinet has barely any sense of vibration. I swapped left for right speakers to compare and when holding the good speaker there was no vibration of the front baffle or the rest of the cabinet ( i was was surprised just how solid they felt given the volume of bass being put out) I can't get any movement from the front baffle if i try to move it with my fingers but when the music is playing it is very obviously vibrating separately from rest of the enclosure. The bas/mid driver seems fine,no buzzing from there. How do you get into the cabinet to inspect /repair .It doesn't look like it's going to be easy!!! The model is Serial No KAN IV/CH (cherry?) 602852 03-268005 .They have the silly sock grille cloth. Thanks in advance for any advice.
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