Help putting together a system

I just installed some new front end speakers, and its made all of the difference in the world. I can hear mids SO well now, so much so that I have to turn them down a bit because I still have factory 6x9s in the back. The model I picked up and installed was a KFC-1380ie, and I have to say I really really enjoy the enhanced sound quality. The system doesn't sound muddy now, and when the sub is hooked up in the back Im thinking its going to make it sound more balanced rather than just solid bass, my car came with factory tweeters so I think this may just end up enhancing the overall sound quality with the system added by a pretty big factor.

Update!

The box is half fabbed, the mounting hole was the hardest overall. They gave me a template with the sub that I traced and cut without compairing to the sub....it was an EXACT fit. So 40min of sanding later the sub fits in the hole perfectly. Finishing the rest tomorrow and doing the electrical, seating the sub and ports then waiting for the amp to arrive on Monday =)

I just had a look see at my head units pre-out levels, 2500mV@10k(horseshoe shaped sign) Now should I match that up with the input sensitivity control that directly correlates with it on the amp, or step it down a little bit to protect the subs(I'm assuming this is what Kenwood is calling a gain). Of course I'll be tuning this in, but is there a way to hook up a constant 40Hz sign wave into the system specifically for tuning purposes? Maybe a test CD? Ive been looking around and I've found some audio programs that can do that, but I cant figure out how to get it onto CD.

 

Whats a DMM?

 

I wasn't going to set the gain at like 2500, the manual has a spot for 2.5v on the input sensitivity control, thats why I asked.

Box is done, speaker installed mounted and all wiring is finished. Amp gets here tomorrow and i'll post install pics!

 

I'll trust the DMM ^_^

 

Holy crap, I got thread jacked!

I just thought of something, am I going to need to upgrade my alternator at these loads?
Just did some calcs and at 500Watts RMS assuming a steady 13.8v charge on the battery or output from the alternator the battery's power is consumed in a total of 107seconds full tilt, or my math is way off.Thats assuming that the battery is rated at 65 amp hours.

Anywho, thanks much for the help guys! You made this all possible

[EDIT]

Finished and done, and tired. Pretty much everything that could have gone wrong to make things difficult did, i'll post pics tomorrow

 

Went out drinking with some friends tonight, no dim at idle full tilt. Rattles the **** out of my car, its nuts. I cant turn it up to full volume, it hurts my ears. Im happy and drunk about to pass out as I post this. Peace yo