DUDE! That's a pretty dark speaker! Gotta break that sucker in! Crank up your clean channel and BANG out some power chords with the neck pickup! Turn up that bass and get that speaker BOUNCIN! I use a bass amp and bass guitar for awhile then go back to the guitar and play hard stacatto chords! I'm sure there's better ways of doin it but the idea is to move that cone and after a few hrs the highend will start to smooth out! I HATE new speakers because the sound harsh and ice-pick-y! My 16yr old vintage 30s sound incredible now! I hated them with a passion 15yrs ago! Good luck and wear earplugs! Lol!