oldkystude

I was experiencing an intermittent right front speaker and feared the amp was going. Luckily I had an extra speaker with bad foam but it played ok. I found that I had an open circuit in the inop speaker. The spare good one showed 7.6 ohms. Since the failed speaker was only a few years old the foam was sound. I carefully removed the good foam from the inop speaker and glued it onto my functional spare using left over simply speakers brand glue.
i don’t recommend trying to rescue a foam but I needed it fixed quickly. Using fresh single edge razor blades it is possible but takes a lot of time and patience.
The result was great! Amp seems fine, and my used-foam transplant is loud and clear.

ps: I cut open the bad speaker to see why it had failed. The fine wire under the hard glue on the paper cone had the open. No way to fix it as that glue is as hard as a rock. A very surprising failure mode. I expected to see something more dramatic.

jharris400

Wow that is surprising about the wire breaking. Acetone will dissolve the glue and should have allowed you to repair the break with solder.

oldkystude

Thanks I’ll try that! I figured it was in the coils so destroyed it to find the failure mode. I’m sure it will happen again on one of them!