I've a local opportunity on the 8 ohm, 400 watt version of this cab. The newb has a 2x10 and 2x12, but has never played through a 15. I have a QSC rmx 1450 and the Tech21 BDDI and a 5 string J bass with flats. Love my DCML 2x12, but GASSING (per usual). Can any vets who have owned or played through this GK cab, please give me some feedback on its tonal characteristics? thanks guys, fnord!