I have actually tested a single 8, a single 10 and a single 12 in the same car and same amp and same load. BUT... the "boxes" were different and the subs were different.
But just for informational purposes...
8" - 150.3... Atomic Apocalypse 8 (5 gallon "bass bucket")
10" - 151.5... Cadence 10 (sw2?) (tube)
12 - 152.5... Tantric MD12 (burp box)
I have done 153.xx with a single Tantric HD 10, but it's a little unfair to compare it to the other subs since it's got more ass and was at .5 nominal.
So, you can see that even though they were very different boxes, all at the same nominal load and ~ the same power, the cone area really makes a difference.
Dayum! you got a 150.3 out of a single 8? more info please. watts? Car?
