SO i just got this rig. Its an early 70s Ampeg V4B in great shape with a trace elliot 1048 4x10. its the 80s 300watt version i believe. Does anyone have the specs for this cab? Im wondering what the speaker sensitivity is. Just trying to get the most clean volume out of this amp as possible. I love it so far. Gig volumes put me teetering on the edge of clean and grit, i love the sound!