Class 5 Head question

[Captain Dog]

Today i plugged my guitar, turned on the head and no sound. dimed the volume almost full, hit some chords and nothing. Played some note and i heard me playing but fully distorted from the inside of the head. Looked at the back of the amp and i realized that the cable was half into the headphones input but the small switch was in speaker selection and NOT Headphone mode. Turned off the head, plugged the speaker, turned on tha amp again...normal sound.

The whole thing without a speaker connected lasted about 10-15 secs max.

Any possibilities that i have damaged the amp or i am lucky?

Somewhere i saw that the class 5 has a circuit protection in case of running the amp without load. is that true according to the class 5 schematic?

[LiveFreeOrDie]

I'm no expert, but if it's working, it's working. Right?

[surfnorthwest]

Today i plugged my guitar, turned on the head and no sound. dimed the volume almost full, hit some chords and nothing. Played some note and i heard me playing but fully distorted from the inside of the head. Looked at the back of the amp and i realized that the cable was half into the headphones input but the small switch was in speaker selection and NOT Headphone mode. Turned off the head, plugged the speaker, turned on tha amp again...normal sound.

The whole thing without a speaker connected lasted about 10-15 secs max.

Any possibilities that i have damaged the amp or i am lucky?

Somewhere i saw that the class 5 has a circuit protection in case of running the amp without load. is that true according to the class 5 schematic?

No you're amp is ok, if it is plays normal you escaped damage. It would blow a fuse before the damage would happen. How sentitive the amp is to damage is different between every amp based on the design, but as a rule just don't do it.