Meaning the voltage the bass works on doesn't matter. If you reckon you weren't pushing the cab hard then why would you think you blew the crossover?
On the face of it Jimmy's bet looks more likely now. Knob position doesn't tell me anything specific but a hotter than most bass signal into a master on "half" could easily equal rated RMS power out on heavy notes.
Team Trace Elliot #1, IWNBARMPB Prezident, Mediocre Bassist #399, Old Basstard #86, PBBBC #2