wow, you're kidding. That seems like pretty poor design. Well, I guess it is off the to B&O shop for the speakers. I'll give cleaning the RCA plug a shot again but I thought I did a pretty good job the first. Once more can't hurt. Thanks to all who responded!

Thanks for your reply. The hum became muted when I connected it to the amp but did not disappear entirely. Moreover, this appears to be happening on only one speaker. The other speaker does not exhibit the same hum under similar conditions. This other speaker also has odd LED behavior - the green light appears even when there is no signal or even no

This helps a lot. I talked to a guy at B&O and he told me to take the bridge out between my mains in and pre out in the back of the amp (NAD) and connect the speakers to the pre out in the back of the amp. I did that but got no signal to the speakers. I am I completely screwing this up?

Thanks for your post. I did not realize I will need a pre amp out. The documentation with the speakers simply said switch to line and connect to amp. Can you recommend a 110v pre amp?

I have some fairly old beolab 8000s. I am trying to connect them to a non-B&O amp. I switched them to line but as soon as I connect an rca plug to the back of one of them (w/o being connected to the amp) I get a 60 hz hum out of the speaker. Thoughts on what might be wrong? I am assuming that they still need the AC power when connecting to a non