4ohm and 8ohm

Thanks, guys!

Face, my Marantz does not seem to have anything written on the back regarding impendance, but I remember when I was buying it, I specifically matched it to the speakers and the speakers are - apparently - 8ohm (at least that's what the B&W manual and the plate on the back of them say). Should I be digging for the manual for the Marantz?

I just wanted to try out the Kef to see if it will "voice match"(meaning, they'll have similar enough reproduction to blend in together) the B&Ws. - Is that what is generally called timbre-matching? (from the little bits of info I dug up online, it is). And is timbre-matching related to impendance? Aside from the power output, which I'm hoping I can negate by adjusting the gains.

Is the Marantz rated for 4ohm operation? If so, you'll be fine. You may have to adjust the gain levels though. Sometimes reversing the + and - leads helps also. But to get the best surround sound, the speakers really should be timbre matched.

Just hook it up to the center channel + and - like any other speaker. YOu may need to adjust the center channel gain vs the fronts since the lower impedence will likely draw more power from the amp.