Hello. I'm new to the forum and to higher-end audio, but trying to learn quickly. I have two Klipsch front speakers rated at 8 ohms I'm wanting to add a center speaker and some surrounds for home theater listening; however, a center speaker I just purchased but not yet hooked up is 6 ohms. Can you use different impedence speakers like that or must they all be 8 ohm? Where online can I read more on impedance?

Many thanks.