George's Pro Sound Company wrote:

"Ron Johnson" wrote
Eeyore wrote:
This is a well established technique for preventing voice coils burning
out under conditions of 'overdrive'.

here is a novel thought
DON"T OVERDRIVE THEM
simple and effective

it's what I do
the easiest way to overdrive a speaker is to use a amp larger than the
speakers rateing

The amps aren't but a blast of HF feedback will do it since it will whistle
through the HF filter. I am as it happens going to fit an 80W P-Audio driver
in the damn second JBL JRX112M that's blown its puny HF driver for the second
time, despite improving JBL's original ineffective bulb protection which was
100% ineffective. Jesus that design is CRAP. 1st order crossover !

Bear in mind these are the 15 year old monitors made of MDF and have been very
little trouble generally over the years.

Graham