Hi there, quick question, I've scoured the walkabout megathread but can't seem to find the info I'm looking for on this one... so hopefully someone will happen to know: i've got a 4 ohm walkabout 12, how high can I turn up the master without worrying about blowing out the speaker? the cab is probably rated at 300w, and the head is 300w. I play bopth an active and passive bass through it, and the active bass is way louder at the same volume (as you would expect), does that mean I can turn it up higher when I play the passive bass? right now i never turn it up past 12 / noon... but it might be able to take more with the passive input? (active jazz, and passive mustang) I don't want to blow the speaker by trying to find out. thanks!