get speakers last. tweeters will hold you over.
eff that. Tweeters are weak. 99% of them are going to way too tin-y. Especially if you don't have a crossover (a crossover splits the audio signal, giving the tweeters and speakers the proper signal. e.g. sending the high frequencies and the speakers the lower freq. while keeping the deep freq. out). Get a decent set of component speakers, they come with mid ranges, tweeters (usually on the speaker itself), and crossovers. You can get a decent set now for $100. They will improve your sound quality like crazy.
You don't have to go nuts and get 1000w system. It's not even in your price range. I hit 139dB with a 200watt amp and 2 12" rockford fosgate p1's (they're ultra cheap. $100 for the pair back in the day). It was a florida state record, but I think it's been broken since. It's 85% the box. I could use a dirt cheap equivalent to a JL w7 in a killer box and destroy a w7 it if were in a shitty box.
If you're going to buy a prefab box, you should do some stuff to make it sound better. More times than not prefab boxes suck. So if you buy one, get a ported one. It will (in theory) increase your output by ~3dB in comparison to a sealed box. Cut strips of wood to insert into the corners of the box from top to bottom, cut them in triangular shapes so the pointed side slips right into the corner creating a angle on the box, getting rid of the 90 degree angle (which is a sound trap that will lower your output). Then take fiberglass resin (no mat, just the resin). Apply it to the entire inside of the box. MDF is pourous, so you want to fix that. The corner strips and the resin will (in theory again) increase output by 6dB.
Check out
http://www.woofersetc.com/ for killer prices. Rockford Fosgate is a good brand that you can get a lower end line for cheap (that still sounds good). Their amps are ok, but not really worth the price on the lower end. OZ Audio is a good brand, they are the only brand to hit a perfect score (that I know of) in a sound quality comp. For amps check out Hifonics. KILLER shit for good good prices.
Do your research and PLEASE don't buy stuff for the name, because it will hurt you. I don't recommend JL amps or their lower end subs. The w7 is sick, but WAY out of your price range.
I built competition systems for 6 years. I've worked on more than 25 cars/trucks that have at one time held state, national, and a few world records in dB Drag, SPL (sound pressure level), and SQL (sound quality level).
edit: also research how amps work if you're not completely sure. Most companies will advertise wattage and other specs that you will never see. For example a lot of companies are starting to advertise for example 3000 watts at 1ohm, but if you're setup is 2ohm you're looking at 1500 watts, if it's at 4ohm you're looking at 750watts.
So when you're reading, make sure you know how you're going to set your system up. Check out the impedance of your sub(s). Make sure you know how you're going to wire it and what final impedance you're going to use (e.g. (2) single voice coil 4 ohm subs wired in parallel to run a final impedance of 2ohms (dual voice coil 4ohm in parallel would equal 1ohm final impedance), then check the amps your researching specs at 2ohm, and not 4 or 1ohm (unless its DVC), some even can run at 0.5ohm)
Hope that helps man. If you have any questions you can pm me
