I have an amp rated at 8 ohms or above. I'm thinking of purchasing tower speakers which are rated at 8 ohms. But when they say 8 ohms, do they mean 8 ohms when running the pair of speakers? Or is each tower speaker rated at 8 ohms? Because if that's the case shouldn't the manufacturer make sure to state what the total ohms will be when running the pair? Who looks at a tower speaker purchase and sees 8 ohm impedance and thinks, ok, since I'm buying two, that means the total 0hm impedance will actually be 4 ohms? Argh! Now I'm confused. Just worried because the amp I have is known for frying itself if you try and use 4 ohms.