Okay, so, except when airplanes are around - and yeah, this is a legitimate issue, what with Kenmore Air Harbour down the hill - the ambient noise level on my SM57s is metering a little above -80db. I don't know how big a deal the airplane noise will be, but at least it's transient. There's also some traffic noise from Bothell Way, also down the hill. So people with recording experience: is this good enough? Can I safely notch-filter this kind of distant low-frequency annoyance out? Will that fuck up the sound otherwise?