Centre channel sometimes crackles when playing stereo files in 5.1

Hello everyone.

When I play stereo files using K-lite Codec Pack using the dolby prologic ii codec, some files sound a bit strange: only the centre channel sounds a bit distorted, the other channels sound fine, though bass notes sometimes cause distortion as well. Is this normal? How can I solve the centre channel problem? Why does the original stereo source sound fine but distorted in 5.1? Why doesn't this happen with all files?

Kind regards

Vincent

Could be caused by overflows due to high volume.

Try normal 5.1 output instead of DPL:
3/0/2 + LFE
enable "expand stereo to center" and "expand stereo to surround"