Question: what is the difference between a 4 ohm and 8 ohm speaker?
Answer: Ohm is a measurement of resistance. The lower the number the less resistance. ... But 8 ohm speakers on a 4 ohm system only need to be rated at half the output power of the amp. A speaker rated at 8ohms and max input of 50 watts is equal to a speaker rated at 4 ohms with a max input of 100 watts.