putting in a new system

[ttr125fan09]

i have a question though, if i run my sub of an amp, will my door speakers still be able to be powered from the head unit, im a newb at this....

[sqcomp]

The short answer is yes.

Question for you:

What have you purchased so far for the system?

[ttr125fan09]

The Subwoofer (http://www.rockfordfosgate.com/products/product_details.asp?item_id=112931&locale=en_US&p_status=)

The amp for the sub (http://www.rockfordfosgate.com/products/product_details.asp?item_id=112091&locale=en_US&p_status=)

And the door speakers (http://www.rockfordfosgate.com/products/product_details.asp?item_id=112912&locale=en_US&p_status=)

its nothing fancy, just better, if you have any tips or input, please fill me in

[sqcomp]

What's the source? Stock?

[ttr125fan09]

if your talking about the headunit, its a kenwood, ill try to find out what model

[Lil Abner]

Chances are the Kenwood will have an RCA pre-out for the subwoofer. If so, then just hook your amp to that output with a set of RCAs and you'll be golden.

[BEEF]

just spend some money on the RCA cables and don't run them right beside the power wire (It makes a difference)

[ttr125fan09]

the hu is a kdc-138, i need an adapter for the rca cables right?

[BEEF]

according to this picture (http://www.sonicelectronix.com/pictures_new.php?id=10339&picture_id=172469) you already have RCA outputs on the back.

I don't know anything about the radio and am just going by the pics. I would just wait until you get it and go from there. get some good shielded cables and run them on the opposite side of the car. thats what we always did...back in the day. run them beside the power wire and expect some noise. it is more hassle to tear up both sides of the car but it is the details that make the difference.

[ttr125fan09]

So what your saying is basically if i run my power on the passenger side, run my rca on my drivers side, so there no interference right?

[BEEF]

basically yes.

I know guys that have ran them together without issues. I also know guys that had horrible noise and racket and couldn't figure it out and I proved that their $75 monster cable was the issue because it was butted up against the power wire. I used a $5 RCA cable once to prove this. we just unplugged his and ran it through the car (temporarily) back to his amp and voilia, all his issues went away.

one thing also is to use the same size ground as you do power wire. you don't want the RPM humm in their either.

I don't like going much below 10 gauge but that is a personal preference for me. my largest was 4 gauge and I will admit it was probably overkill but that is just how I roll.

good luck on your project.