Lmao... I know what seat position is, and how to chase tenths. So thanks for the response. Walls.. where did that come from?
I'm thinking he's looking for little more "substantial" results... he's asking why he's stuck around 140 . I think he's underpowered on a higher power sub. People see folks doing 145-147db on a single 12 on 3K and don't realize its clamped power on a higher wattage amp or are wired into the dirt to get there, plus testing.
The way I read it he's wired at 2ohm on that Orion 3000.1 d splx with a 2500w d4 4" coiled 12 or am I reading it wrong?
Now if he's looking for more than than incremental gains I'd say wiring down for more power would be the best, easiest option (assuming he has enough electrical).
Buying a meter is great advice but I never did and only metered the day of the show or thru friends myself. Testing, testing and changing small things will gain or lose but only small gains usually.