I have learned the hard way that speaker protection is necessary. Very much so!
I was away for the weekend, and forgot to turn off my First Watt F5. The system somehow developed an issue where the amp would output full positive DC rail voltage (around 24 V) to the speakers. Needless to say the woofers were toast. Worse thing was the terrible smell of burnt electronics in the house, and I am still glad there was no fire.
I added a speaker protection to this (and every other) amp since then. Burning down the house is just not an option.
