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September 27, 2020 at 11:23 am #526
Can you turn up the bias, and do your hear the crackles? If not, likely the bias circuit went and needs to be replaced.
Switching backplates is dead on for a suggestion. If it follows the backplate, you know what went wrong.
I have a pair of M645s that are coming up on two years old, and this concerns me every time I use the speakers.
Frustrating that a speaker company that is four decades old and charges this much has this problem.
I’ve heard this happen to other people.
I can buy a pair of MLS from Best Buy that last 10 years.
Two years for a backplate is pretty poor.
Please let us know what you find out.