@ Dr House why thank you. Having not had any distortion previous to this and had the pre out level set to -2 i'm guessing pre out isnt the problem. Also the video is just an audio cd that I knew had a lot of bass in it
so I was able to record the noise, I should have mentioned the 'clapping' isn't specific to that Bluray
@sirquack I believe it was as I used the calibration mic originally with all speakers & sub attached.
@fredk weird how was able to bottom out the driver this time having had no probs for 2.5 years!