tips please
 

I am wanting to get more lows out of my systems i mean it bangs hard other then lows like 30hz and lower i barly get anything out of it I'm running a Sony CDX-GT09 as my HU and for my amp its a Sony XM-1252GTR for the subs are 2 pioneers both 10's ones a TS-W258D4 and the other is a TS-W257D4 and they are in a ported bassworx box HPR210 for power I am using a 8 gauge power wire with a 60 amp fuse and a .5 ferrad scosche cap i know Sony isn't the best but i don't have the money to upgrade im having a hard enough time paying my tuition but if i could get any suggesting that be greatly helpful, also on my HU my HPF is set to 120Hz and my LPF is set to 120 Hz
thanks

If you want some real bottom end you are going to have to change your woofers and the box. Sell what you have, find a single 15, and build a big ported box for it.

x2 ^^^ best advice you can get right there...

well would my amp even be able to power a 15? what would be a recommended sub?

Don't mix subwoofers, there's way too much cancellation & distortion to enjoy the bass.

Get a single 15". Pretty much anything you can afford is going to be better if you make a decent ported box for it. Get an amp that does 500W @ 1 ohm and a sub that can handle it.

The amp isn't terrible. A bigger amp will just make it go louder. The woofer and the box it is in are what determines how low it will play.

I meant, tune lower and double the power so you don't hear much of a loss and still get the lows.

Your crossover settings are a little bit disturbing. Not that it will give you any more bang for the buck, but try setting the low pass somewhere between 60 to 80hz and your high pass at around 100hz and you may find that it at least sounds a little bit better.

Even 60-80 is high. Dunno what the box is tuned to but try HPF 60-80 and LPF 35. Is that a component amp?

^ that's way too low a low pass for anything other than a full on SQ car. 60 to 80 is more reasonable for a street car.