crate glx 212 (bass, metal, single, amp, effects)

[PerFeCTioNThrUSileNCe]

i recently bought a new crate glx 212, 120 watt guitar amp. a steal too i only paid $380 which is about half the retail price. i love the thing. the only problem i have with it, is that i cant seem to get enough high end treble out of it. part of the reason for this i think is that i play a guitar with double humbuckers (which are built to give a warm smooth sound). but ive noticed that it does that with a lot of guitars that have three single coils too.

im thinking about having the speakers replaced with ones designed to give better tone.

anyone have any suggestions as to what i might be able to do about this that may be a little cheaper?