I've read through a lot of the EQ posts, and haven't seen anybody having quite the same problem as me. When I turn up a bit, I get a sound as though my speakers are being overdriven, particularly the 210 cab. My cabs are 400W cabs (TC electronic 210 & 212), and my amp is Eden Navigator WTX1000 (500/side), and I'm running the gain/master at about 12 o'clock each (passive bass). I think it's an EQ issue, but I'm having a heck of a time finding the right freq to EQ out. Can anybody help? Please?