G/day ,Mark and Cappy, Thanks for the reply, i dont like stuffing around with settings either, im just trying to find what causes this swooshing sound,i know how to get rid of it (restart engines) i just like to know why its doing it and its nowhere near as bad as it used to be eg it did it with all planes, now it intermitent. and seems to only happen with the 707. Most times it doesnt worry me to much, but now and again i dig my heels in and try and find out why its doing it. Now i know that you dont use any settings, thats all i wanted to know. I had updated the drivers long ago, but thanks for the suggestion. Btw Mark i got TSS PW sound pack for the 757 the other day(fsx ver), sounds great, but they havent got the RR fsx version done yet, Tss is where i got the equalizer settings idea from. anyway thanks again take care Jeff :)