Does anyone know what the factory Mark Levinson subsonic filter is set at? And has anyone been able to defeat it? I remember reading a while ago from cmusic that it was set at 30 hz, and un-defeatable. He got around it by boosting 20-25 fz on his processor. I think the ML amp leaks sub 30hz frequencies just enough to be heard, but not enough to blow the factory woofer. Resulting in barely audible and muddy sounding bass.

Thanks for any info fellas!

Best regards,
Jeff