Loudspeaker Impedance: 8-Ohm vs 4-Ohm Speakers YouTube Discussion 10/20/19. Why is Loudspeaker Sensitivity Important? ... will give you directly-comparable readings from one speaker to another over ...

Ohm is the unit of electrical resistance. Just kidding. Well, it is, but this is how it's of most relevance to amplifying sound. Speakers have at least one, and usually several, drivers.

Sometimes an 8 ohm speaker might be 7 ohms, or at times 29 ohms, or even 44 ohms. It's all over the place. All speakers have an impedance rating in ohms, which represents how difficult the speaker ...

Impedance ratings are basically useless. No speaker is the same impedance at all frequencies. If one is rated at "8 ohms," that could be at 1K, 500Hz, 20K or at literally any frequency.