Wow, I don't see where I broke any of those rules, so thanks for being a tool to a guy new to the boards. I just imagined that in the Sundown forum that someone would own a set and maybe post their experience. I know damn good and well there is no magic calculator that gives a termlab score before you do the install. This was not a comparison thread as I specifically stated I wanted to keep it about the e-8s.. No wonder I haven't tried to get back into the car audio community...
Yes I stated my goal was to exceed my old system, but I didn't ask if my proposed setup would break 138, 140, 142.. etc... Without having a box design picked out you can't even start to look at the exact numbers... I was basically trying to see if anyone had the subs and what they were getting out of them. ie.. if someone is hitting 150db with them then they can get loud... setups will be different and vary drastically... but if I built an identical box, with an identical electrical system in an identical vehicle... I could reasonably expect at least ~similar~ results... no? I might not hit 150 with the same setup but assuming all specs are identical, we can agree I would almost certainly be louder than 130, no?
I also asked how they sound at lower freqs, and maybe I worded that wrong too lol.. But.... I can tell you first hand that Boss Shallow mount 10s sound like poo once you get below about 45HZ in a sealed box that meets the recommended size by the manufacturer, so I would think that someone could say "the e-8s" are capable of playing low freqs like a champ" or "they are nice subs but not really the best on the bottom end" or whatever the case may be. And I know that can be at least someone calculated using winisd or several other programs. I compared the sa-10s to my old Boss 10s and can easily say the sundown subs will perform better at lower frequencies when following manufacturers recommendations for the enclosure... I doubt anyone would argue otherwise right?
If somehow I did violate a rule that I didn't see in your ohsokindandhelpful post.. then I apologize and will take my questions elsewhere.