Originally Posted By: Seekinganswers

I am currently taking an introductory course into principles of electronics and speaker ohms has me a little confused.

I have learned from class that the greater the ohm rating, the greater the resistance. So it seems a little counter intuitive to me that the M80s, with 4 ohms, would be harder to drive than say an M60 with an 8 ohm rating. I tried to ask my instructor about it and he really did not have an answer to that, either.


Yeah, your way of thinking is correct as the advantage of a 4ohm rated speaker would be that it presents less resistance to the current flow which will allow the speaker to pull more power from the amp/receiver. However, because of this the amplifier must be designed to handle this greater flow of current. Therefore, with low impedance speakers (impedance varies and it is the dips/phase angle interaction to worry about) can sometimes cause the amplifier or receiver to overheat and/or go into current limiting when pushed hard. In either case will cause the electronics to shutdown or in the worst possible case, permanent damage.

I’m armed and I’m drinking. You don’t want to listen to advice from me, amigo.

-Max Payne