So your Deep is at noon and channel Bass at or above noon - plus you are running a ported cab which further enhances the low end... no wonder you have tons of bass, you have literally done pretty much everything to get a massive low end save swapping it for a bass amp! (Kinda the same with your open-back 4x12, stood close to a wall that's sure going to project well and fill your room, since that's what it is for.)