Kanaworm$

Looks clean and a well laid out design! What is it rated at?

Amp 1 ohm stable?

This would work .... http://www.parts-express.com/pe/showdetl.cfm?Partnumber=260-540 Or http://www.sounddeadenershowdown.com/products/ebr The latter is what I ended up using for my temp fix until I build my new box Duct tape can be used as well if you're not concerned about looks

Do you need the two different size depths (top, bottom)? What type of music do you listen to mainly? What amp will you be using?

Welcome .... About dang time you got here ...

I think your all right with what you came up with. The RE calc makes it an L-Shaped port and your 9" length is the L part of the port where it continues after the intial slot. I would recommend making your port wider, less chance for port noise.

I would recommend building a new box! Read below...

Sweet price and a great looking driver!

Yes, Xcons are supposed to be great. I have two 15's sitting in the basement waiting to be unraveled. I will probably get to one of them in about a month. Right now I am breaking in Mach 5 IXL 15" before I hand it over to a friend, who allowed me to toy with it for a while. I am curious what folks would have to say about the Alphas and BL's. Not getting much yet. We'll see what happens in the next few days. I mainly posted this to get opinions on these two subs, as I am curious, and I have googled pretty much all there is on Alphas and I believe most on BL's, but still not satisfied with the results, and thought someone would just drop a gem on me. I also thought about which forum would be most neutral about them, cause as you know some forums have their favourite "boner" subs... The more I think about it, the more I think RD took a step toward the more SQ oriented Alpha with v3 over v2 according to some specs, but what I dont get is the high fs rating, and that makes me suspicious about how true these recent unofficial specs are. And I do realize that the v3 is just way too new, so maybe what I should have asked how v2 compares to the BL, and see what people would say. I don't have any experience with either driver but have worked with an Fi SSD 18" and it was a great woofer. You will probably get more positive feedback on the BL than the Alpha!

Another option you may want to look at would be the XCON from SSA. It's a sound quality driver that can handle a lot of power.

Fi BL ftw! Reputation alone makes Fi a better choice, plus the design, engineering and hand built to order options make it hands down the better choice.

Take a look at this ... http://www.carstereo.com/help/Articles.cfm?id=31

Wire your 1 ohm coils in series to achieve 2 ohms

Strap your amps to 2 ohm!

What ohm are your voice coils?

Nice start to a great build! Keep the pics coming! I would look to get a router and round all edges on your new box, especially in the port. I see you sealed off your power wire with caulk sealent, I would look at something like this http://www.parts-express.com/pe/showdetl.cfm?Partnumber=263-636 better to be safe than sorry!

Plan a day searching Car Audio shops and go listen. Hopefully you are able to find some that have demo cars set up as well.

Only way your going to abuse the sub is by "clipping" your amplifier by inadequate "electrical" and not setting your gains correctly. Definitely look at doing 2 runs of 1/0 power and ground if your going to be running that much power. The 300 amp alt will help but your going to be needing more than 1 extra battery.

Doh!

Welcome .... I would advise reading the two links below. It will help you get your answers and will let us help you as well. Also the search function here is a great resource learn to use it.

Definitely look into the BP option as well.

Check Parts Express! Worse case scenario would be to buy it direct from Rockford Fosgate.

Out of the 3 amps you listed, I would go with the AQ. But personally I think the better choice would be the new Sundown Audio SAE-1200D v.2. It is on pre-sale in the Sundown section of this forum. Check it out!