Hi all, i seem to have developed a sound problem on the PMDG 737 600-900 series(inc upgrade) which only exists in the cockpit enviroment sounds. The problem is that at no specific time within a flight i get a sort of crackle interference noise in the background which is very annoying!!! This only happens with this add on and not with MS aircraft!If i use the Enviroment slider within settings of FS9 and move it to the left the crackling/interference noise (and most of the other background noises) go away!!I cant seem to isolate the problem sound file!!Can anyone help with this one!thanksMark

Hi all, i seem to have developed a sound problem on the PMDG 737 600-900 series(inc upgrade) which only exists in the cockpit enviroment sounds. The problem is that at no specific time within a flight i get a sort of crackle interference noise in the background which is very annoying!!! This only happens with this add on and not with MS aircraft!If i use the Enviroment slider within settings of FS9 and move it to the left the crackling/interference noise (and most of the other background noises) go away!!I cant seem to isolate the problem sound file!!Can anyone help with this one!thanksMark

Have you tried switching the Recirculation (RECIRC) FAN to off?