Are Fostex drivers 'built tough'?

My daughter asked me to evaluate a speaker I built for her some years ago. Before she pulled off the magnetically attached grill, she said, “This is really bad.” I chanted the Hitch Hiker’s Guide to the Galaxy mantra: “Don’t Panic.”

Seems a visiting toddler ‘explored’ the speaker and ‘modified’ the whizzer cone on this FE206e. (Photo below) I brought both speakers home and closely examined the injured driver. The voice coil, main cone, whizzer cone joint appears to be intact. I connected the speakers to my MiniWatt S-1 (2.5 wpc) tube amp, put on my test CD, crossed fingers, and hit play. Surprisingly, the speaker sounds OK. At least up to the 80-82 dB level I can tolerate before tinnitus rears its ugly head. I’m sure if I measured the response I could find differences between before & after, but for my daughter’s purposes, all is well.

I must say, I’m really impressed by how robust Fostex drivers are!

Cheers, Jim
 

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That is not bad. Take the wizzer and careful massage it back into shape.

Then add a thin coat of modPodge (slightly thinned). Doing a coat on the entire cone won’t hurt either.

There are other fairly simple mods that can be done to improve the FE206.

The answer to the question is, what driver (Foster, owner of the Fostex brand, is one of the very largest manufacturer of loudspeaker drivers in the world). In the case of the FE series, they are easy to damage.

dave