Originally Posted By: Rui

I connected an Energy bookshelf speaker as the center channel, and the same problem is replicated, so my felling is that buzzing note is actually on the source recording. I think the VP150 is a better speaker and just exposes the flaw in the recording more (and now with my new set up where the centre channel is more optimally placed i here the flaw more).
I'm glad you were able to duplicate the problem so you know it isn't the VP150, nothing like reassurance.

Jason
M80 v2
VP160 v3
QS8 v2
PB13 Ultra
Denon 3808
Samsung 85" Q70