146.9 on a TL in the passenger kick with driver door open
Two Type R 15s
Two JL 500/1s
7 cubes at 33 hz
Stock alternator
Stock battery (at the time)
My setup is not geared towards SPL at all. I didn't even plan on having it metered. I went to a small car audio event just to check out other systems, and some of the guys there convinced me to put it on the meter just for grins. I came in listening to tunes and didn't take any time to make any kind of adjustments. After seeing some of the numbers out there that day, I'm pretty happy with it.
One question for you SPL gurus - would it have been louder if the driver door was closed, sealing up the truck? Was it louder because the door was open? The guy setting up the mic told me to keep my door open, so I did. I have been curious about that ever since.