Its the preamp centre speaker output that is broken, so time for a new amp Thanks for the help

I have plugged the speakers into other outputs and it seems to work okay, just the centre speaker output. I am begining to think an amp fault. Can anyone recomend a good av amp that will run the b&o s Thanks

I have just brought some beolab 5 speakers as my main front speakers, I have today got a set of beolab 4000 speakers to use as my main center speaker, I am using a yamaha amp via the pre amp sockets, now beolab 5 works perfect but I only am getting a muffledlow volume sound from the beolab4000. I brought cables from sounds heavaly (rca) and have set