Thanks for the all the tips. So - to be clear, I have Beolab Penta 1's, so they are active. The Dolby is all built in to the 32 inch Avant - I believe it is one of the most recent US Avant models.
The New beolink converter, I assume would then have remote function of the 4500 running through the Avant. Does that plug into the ML port on the Avant? If I do that, then I can't use the Beolink 7000 in two way mode - or would that still work?
What if I hook up the Penta's to the 4500, and then run the powerlink left/right speaker out from the Avant to the TV/Aux port of the 4500, and leave it in option 0? Would I need a cable to combine the left and right powerlink signals from the Avant? If I pressed TV on the Beo4 or 7000, would that switch the source on the 4500 to the tv/aux port?