I've recently bought a 5150 III 100w.. at first I was like meh.. I'm gonna sell it.. then.. I figured out it was the pickup in my guitar which did not work with the wood.. i swapped it and all of a sudden, here's the tone I was chasing for apr. 5 years..
The 5150 III with a mesa 4X12 traditional cab and my custom made 7 string (swamp ash, flamed walnut top, maple neck+fretboard and a BKP warpig 7 alnico 5) totally slays..
The boogie mark 5 is leaving house soon, had the amp for 2 years, it's a great piece of gear, but the 5150 III is my number one to go to now. I even do not need a boost on channel 2.
Currently I run my settings on channel 2 and 3 almost identically:
Ch2:
gain: 2 o'clock
bass: 9-10 o'clock
mids: 2-3 o'clock
treble: 2-3 o'clock
presence: 2 o'clock
volume: 9-10 o'clock
Ch3:
gain: 9-10 o'clock
bass: 9-10 o'clock
mids: 2-3 o'clock
treble: 2-3 o'clock
presence: 2-3 o'clock
volume: 9-10 o'clock
it almost has this bogner/recto kind of flavor.. lot's of mojo, even with the bass slightly rolled off, with the warpig it is really big sounding, but still tight and smooth and guttural..no fizz, no screech.. great tone..
I kinda prefer channel 2, because I feel it has better dynamics, it's all in the picking hand in fact..
For balls out heavy chuggs channel 3 all day..
with the previous pickup i was trying to dial out trebles, presence and i was boosting bass knobs as somehow it felt thin and nasty, but with the warpig, I can in fact run the controls however I want it still sounds amazing..
LOVE IT!