There's a couple of sound engineers in here, AFAIK, so they might be able to help with explaining this. I've been to a lot of gigs recently, local bands and top level professional acts. Out of those shows (all 20 or so of them since Christmas, I think), the bass was only really audible at two of them (Cave In and Pitchshifter). I saw Opeth, despite the bass being a big part of ther sound, I just couldn't hear it most of the time. I saw Low, when the bassist sang, away from the microphone (admittedly, the other two were doing the same thing, there was no amplified sound) he was louder than going through the PA (and I was standing right in front of one of the PA speakers.) Last night was a good example (I saw Clutch, supported by Spiritual Beggars, Dozers and a band I didn't catch the name of). The only time the bass was really audible in whole night was when the bassist of that un-named first band used a some mad filtering effect. What's with that? Why is the bass so quiet at shows? Even though it's all going through the PA....?