Sound Experts Wanted!!!

[samrwalt]

So, just bought Alpine Type-S 4" speakers for the dash and 2 Tang Band 6.5" subwoofers for the doors. I have the HAES 4x40 amp I believe in my 2000 Box.

So I know that the amp has a built in cross over for the door speakers and was concerned I may not get the full potential in frequency range from the new subs if i don't change the cross over.

I know buying a new amp is easier and probably more practical but I am a college student and I see no reason to ditch a perfectly good amp that almost peaks the power of my subwoofers and dash speakers.

Should i just install them just as the OE mid-range woofers are or is there a way that I can change the cross over easily?

Thanks in advanced!