4 ohms and 8 ohms


I am always wondering how this works:
Speakers came with different ohms and so does amps, how does amp knew which ohms to use when there's no switch on the amp?
Example: speakers rated at 4 ohms and the amp rated at 4 ohms and 8 ohms without switch of ohms, how does amp knows which WPC (8 ohms 100wpc and 4 ohms 200wpc) to use?
What happend when speakers rated at 2, 5, 6 ohms?
Thanks a lot for your explanation. ^_^ ^_^ ^_^
cibr

Showing 1 response by cibr

Dear all:
Thanks a lot for all your information.

Reference "M1sst1 & Eldartford", for tube amp, what happen if wrongly plug 4 ohms speaker into 8 ohms output (not enough current)? or 8 ohms speakers into 4 ohms output (too much of current)?
Which ohms to use if the speakers rated at 6 ohms?

Reference "Kijanki", what would you suggest WPC for 4 ohms speakers with 84 or 85 dB?

Reference "Gs5556", looks like to add an a/c conditioner will bring up more steady current and produce more steady "WPC", isn't it?
It brings up another question. Does "hi-end" power cord really help to improve the "sound of music"? or just kept the current more steady into amp?

///// Guess I ask too many questions /////

Maybe someone can suggest a website or books that is easy to read and is easy to understand about my "questions / problems"?

Thanks a lot
Have a wonderful day