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In Reply to: RE: Mechanical buzz in JBL D123-question for speaker repair gurus posted by airtime on June 06, 2017 at 08:38:24
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Follow Ups:
I appreciate the replies. I pulled the speaker and tried it free of the cabinet, and tried it in various spacial orientations and it still buzzes, so at least that rules out cabinet and solution by rotating. I've also discovered it's actually present on virtually all notes of the guitar up to the third string. Very mechanical sounding. I'll try a closer inspection around the surround to see if something jumps out.
Are you sure the buzzing isnt coming from the input signal from the guitar? Try the guitar on another speaker and see if it is still there.
"so at least that rules out cabinet and solution by rotating"
So, it was in its original orientation for what, 40 years (and you rotated of 5 minutes)?
Carefully put some acetone on the spider and massage it back into alignment.
I appreciate the reply, but wouldn't a misalignment betray itself in some definitive way, such as when I am pushing the cone and listening/feeling for some rub? It just seems like a fairly invasive fix when I don't have a firm diagnosis yet. Does the acetone soften the spider?
Edits: 06/06/17
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