While watching 'The Haunting' in DTS, I noticed quite a lot of weird noise comming from my 20-39pc during some scenes (an almost whistling, snorting kinda sound). This only occurs in 'The Haunting' and it only occurs when there is a lot of bass going and not much else. U-571, TPM etc. do not seem to generate the same type of sound. I know my sub is not bottoming out, it has been calibrated and EQ'd so that the THX intro on TPM will not bottom out the sub at a higher volume than I normally listen to. I do not believe that there is a leak, U-571 does not generate any odd noise (that I can hear anyway) and my BFD shows a LOT of bass going to the sub I'm mainly curious about what could be causing the noise, and potential fixes/adjustments any thoughts? Equipment: Outlaw 1050 Paradigm Titans, CC-170, Energy Take2 (surrounds) Toshiba SD-2200 Sony KV36-FV26 BFD DSP1124 Room: 13'x12'x8', open on one side to the kitchen.