Just starting to look into the world of amps as the speaker in my Peavey TKO 65 starts to struggle. I may just end up replacing the speaker. But, if geting something new, a bit mor powerfull and still portable whitin reason. What are the pros and cons of a 2x12(or2x10) and a 1x15 setup? Is it possible to say something general about the differances if all else is equal?