Blowing up condensers

Almost as much fun as mains across a Marshall guitar loudspeaker cabinet.

Here's a puzzle for you. 40 year old 1" metal dome tweeter. The glue holding the coil to the diaphragm turned to dust, so I re glued it with superglue. Didn't work once I turned it up...

Now, the voice coil has *vanished*.

I took the diaphragm off, and there is no voice coil. Two wires go to where it used to be. I ran a shim round the magnet gap, and its completely clear. I shook the magnet, and there is no rattle of loose bits inside.

I will be putting in a new diaphragm in, in due course.

Yes, however back in my political incorrect youth, the big fun to be had was when a new man or woman came in who replaced components for the engineers, you charged up an electrolytic with a suitable working voltage to a few hundred volts and left it on their desk with the wires splayed a bit, and waited for the yelp and a swearword, while we all looked innocent. Brian