Question: what are 8 ohm speakers?
Answer: Far from it, an 8 ohm rated speaker is actually 8 ohms only a small percentage of the time because the speaker's impedance varies, depending on the frequencies the speaker is playing at any given moment. Sometimes an 8 ohm speaker might be 7 ohms, or at times 29 ohms, or even 44 ohms. It's all over the place.