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RE: Help needed: Tympani IVa midrange driver problem

Posted by andyr on April 7, 2021 at 14:32:11:
That's a sad tale, Mike. :-(( Not only because it has left Magnepan in that state, after a re-wire - but also on account of the lack of response you have gotten from their people.

I had a similar problem of a mid driver on one side outputting less than the other one about 20 years ago, when I re-wired one of my mid panels (due to a slip with a screwdriver when I was screwing my IIIa panels into the new hardwood frames that I had a furniture maker construct). :-((

After glueing the new mid-range wire down, I found it had less output than the other one - which destroyed the central image.

I put this down to the fact that I had put too much glue on the mylar, when I was doing the re-wire and the extra mass of that mid reduced its output.

So I suggest you should have a close look at both mids and see whether the left one looks like it has more glue than the other.

If so ... re-doing the wiring is the only solution.

Good luck!

Andy