New speaker guidance (Fi Q's)

Hey Guys,Just decided to install a system in my 2008 ISF. I have this sealed enclosure which I bought from a friend and got it because it still leaves me with a decent amount of trunk space in my little trunk:

nice car, always a fan of the isf. personally would love a sc300, gs300.

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I'm sure that's probably not the best box ever, but eh I like it and it seems pretty sturdy.

Anyway, I have decided to go with the Fi Brand subs. I really wanted the Fi BL's but I noticed they only recommended in a ported box so that's out. So the next best Fi sub I found would be the Fi Q. With the High QTS option added.

Take in mind I will most likely be purchasing a Rockford Fosgate T2500bd amp to accompany the speakers. The goal of my system is to have a nice sounding bass but with the capability to shake the Earth. My question's are as follows:

Will not happen in a sealed application. for the most output and earth shaking bass (lows). youll need to go ported. tuned low.

1. Do I get these 2 subs made as a 1-ohm DVC or 2-ohm DVC? This is an option on the Fi website
   
2. Will I see a difference in bass levels from the 1-ohm DVC and 2-ohm DVC?
   Impedance plays a big role. 2 DVC 1 ohm subs allow you to wire to 1 ohm, 4 ohm, or .25 ohm. 2DVC 2 ohm allow 2 ohm, half ohm, or 8 ohm. for a RF 2500bd(cP) you would want to wire to 1 ohm. so 2 DVC 1 ohm.
   
3. What kind of battery should I get for my car to supply this system? (upgrade stock battery vs upgrading stock AND adding secondary battery)
   for 2500 you will want to do the big 3, minimum stock batt + 3 batts. and High output alternator.
    
   
4. Will that amp provide enough juice or should I look into something more like an AQ 3500??
   while an aq3500 is a great amp, you will need a lot of electrical. now i assume you have a fair sized budget owning an ISF. but likely spend 3-500 on an alternator with High output, 100-150 per battery. and 200ish on wiring. to save some cash on electrical and weight. look into MMATS. super efficient amps, small footprint. and great power.
   
5. Any chance I will be able to do hair tricks with this setup or is there a way I can tweak this setup so I can? hair tricks are completely dependent on an individuals setup. since youre in a trunk environment. A hair trick will be extremely hard, probably not going to happen. But a hair trick doesnt mean youre loud or not. is dependent on tuning, resonant frequency, and how the air moves in the vehicle.
    
   

From my research I think I'd have to get 1-ohm DVC's wired in parallel to get down to the 1-ohm stability of the amp, but I am a novice at systems so any help would be appreciated.

Thanks a lot guys, us new guys really do appreciate all the guidance this forum provides and if you need any more info I'd be glad to provide.

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Thanks for all the good info guys. Yea I kinda freaked when he said 3 batteries, no clue where I would even put them all. But like you said since I already have the box why not try it. A buddy suggested to keep my stock battery and add a Power XS batt in the trunk and then go from there.

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Sweet man what you gonna have bumpin in there? Oh and do you know of anywhere I can get a custom ported box for my ISF? I picked this box because it fits nicely into my trunk but if I could get someone to build me a ported box similar to this one I'd be all over it so I could get that monster bass.

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Where exactly should I put the deadener, just the trunk? Also you have any good deadener you can recommend and how much sq. feet I should get? I'm trying not to spend hundreds of dollars on it but will take your advice. Thanks in advance.

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