My reissue Dan Armstrong lucite bass has always had a problem with sub-bass tones messing with things. By that I mean there is alot of 50Hz rumble that's apparent, especially if you don't mute a string *absolutely*. Now, if I had a graphic EQ on my current amp, that'd be OK (killing the 50Hz completely helps), but I don't... It's more obvious when using the Bright Bass p/u (p-bass sound) than the Dark Bass p/u (gibson eb-0 sound). Does anyone have any recommendations that I could add to the bass' wiring (ie internal components) that could help me here, such as a crude 50Hz HPF? thanks! neil.