Hey there, sorry if this has been dealt with before, if so please point me in the direction and waste no more time on my misery. I recently acquired a 5150. Having played two (one a friends 5150 through my cab and the other a 6505 head in a shop through a Peavey 6505 cab). My only reason for getting it was so I didn't have to take my loooovely H&K Duotone out on the road with me. It's already suffered quite a bit and I've only had it 6 months and I don't want to risk ....ing the thing up (any more). It cost more than my organs are worth on the black market. So... Excited, I hooked it up at rehearsal expecting the same ultra savage tone I'd gotten before but. No. Just loads of woofy, undefined, mushy, flat sounding upset flowing through the speakers that no tweaking of the passive tone stacks or the active resonance/presence could solve. Nothing like the sound I was expecting. It gets completely lost in the mix too. No definition at all, which is kinda important if you've got one guitar in an extreme metal band. It's all bass. I'd ended up running the bass at 2 and the resonance at 2 to get anything barely useable. (Mids at 7, Treble at 8. Presence at 6) Question is thus though, as I'm holding out hope. Do the 5150's not get on well with the Marshall 1960a cabs as a rule? My cab (which is in storage, not at our rehearsal space has G12H's in it and normally sounds the chihuahua's beans). I did try it through a Mode 4 cab... but that was even worse. Normally i'd go right ahead and swap out all the preamp tubes, but the guy I got it off was using it the same night I picked it up and it sounded great. So I don't understand. They (he) also tunes to B and his tone was right up in my teeth. Any recommendations? I can obviously hook it up with my cab, but that would be at our next show and I don't really want to risk it, if the amp has gone pup. FYI I'm using BC Rich ASM Pro's (neck through Mahogs with Eboner boards), TB-5 in the bridge's. Boosting it with a Green Rhino... and i'm running into the low gain input. End of ramble. Pls send help.