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2800w or 3500w*...it doesn't matter as the difference will not be something your ear detects. The biggest concern you should have is maintaining voltage. Last thing you want to do is create a problem due to a lack of supply. One other comment: box rise doesn't exist. Sure there is an impedance curve, but it is not only rise. Competitors may talk about box rise correctly if they are discussing a single frequency; however, even most of them use the term incorrectly and have no idea what they are talking about. Of course if you a referencing the curve and want to understand it I would encourage you to measure it yourself. *note, I didn't pick either of those wattage numbers because that is what I expect you will get but only to highlight that it isn't something you should worry about.

The Fi BTL NEO that I ordered has a 2ohm Re rating of 1.8 so wiring in parallel i should be at .9ish ohms before possible box rise and any damping factors. I bought the AA 3800.1D and just purchased a North Star AGM31 for the back. I know my box is built to spec, tuned at 32hz, braced like a champ and stiff as humanly possible...here is my question/concern... I just want to understand as much as i can without getting overly technical on ohm's and voltage vs impedance and it's variance...As a daily listener I'm just looking more about what power I will be feeding this sub while wired to "1" ohm around 13.5v...I just hope I don't fall into some 3 ohm situation after all is factored in where I would be feeding the 2500rms sub a measly 1k or something like that Ampere Audio's website specs for the AA 3800 1.D specs at 12.8v Power 12.8 VDC – 1 ohm: 3,500W RMS. Power 12.8 VDC – 2 ohm: 1,800W RMS. Power 12.8 VDC – 4 ohm: 900W RMS. SSA's website specs for the AA3800 1.D specs at 14.4v Power 14.4 VDC - 1 ohm: 3,800W RMS Power 14.4 VDC - 2 ohm: 2,000W RMS Power 14.4 VDC - 4 ohm: 750W RMS The main reason I ask is because I will have spent over 2,000 dollars in trying to achieve 1k more RMS and definately more output. And secondly, I want to make sure I get the best performance out of my new upgrades ...Should I forget about all the numbers where as I am only a daily listener and not a competitor? And even more so, can I reasonably expect that I will have a significant increase in output going from a 1500rms Fi BL 12" running on a 1600rms Hifonics amp to a 2500rms Fi BTL NEO runnin on a 3800rms Ampere Audio?

I am an old nerd who does not want what I know as Star Wars to change.

If you remember bothans were more of a creature and the Deather troopers were different.

I read the books years ago. I may still have them at my parents.

I think double the power on a beefier sub should provide a noticeable gain man, excited to see it completed!

Fi built the passive radiators I'm using in my Jimmy to match my XCON after getting Aaron and Marks blessing. I'm certain they could build some for you but it will definitely take a lot more time and probably cost more as well. If you can get the PSI's faster and for a reasonable price I would. I beat myself up trying to figure the weight needed to get the tuning I wanted as well. The problem was that I didn't have any known T/S or any data at all for the PR's to do any useful calculations. I ended up mounting them backwards and tuning them. The subwoofer cone movement works the same with PR's as it does with a standard ported enclosure. The sub moves the least amount at the tuning frequency. I added weight and adjusted until it was tuned ever so slightly lower than my target frequency. Then I used a little bit of silicone to help ensure the bolt wouldn't back out then mounted them correctly. They're still running great about 3 years later and the tuning frequency is still right where I had adjusted it to (30hz). I wish you were closer so I could demo it for you. I absolutely LOVE the way it sounds as does everyone I have given a demo to. I'm not certain that how I did it is perfectly correct but it worked fine for me.

That link is to a dealer. Here is the company link. http://www.val6.com/

thats where im at for now, will be done in 2 days, probably post the finished pics then.

2014 silverado. 22x14s, 10" lift. 1.7:1 4th, tuned for teh lows. remember this color tis some good shit...

Umm, no. There is no "sound of bandpass's. If for some odd reason you want to mimic the shortened frequency response that is SUPER easy with even very simple electronics. The other aspect of your statement that is obvious already. If you knew then you'd realize what you were feeling wasn't right. Since you don't that means if you try to design a 6th order bp you'll end up with something that will sound way worse than a standard box. The approach is also strange. Build a normal ported box. It is easy, it works and best of all you can learn instead of just do. Once built, listen to it. Then decide what you want to make better, describe it on here and ask for help. If you go that route you'll know by the time you buy your next sub what is actually best for you instead of going by what someone else likes or worse yet thinks they like.

I couldn't live 6 days without at least checking in here... wow. LOL

Icon / SSD ?? Stick with copper