rj.1992

I have been trying to figure this out and I am just confusing myself. I have a 2010 4x4 screw with standard 6-cd changer. I want to get the alpine KTP-445 amp for the door speakers and another amp for the subs. Do you think the 445 or the 445U would be better? I just called crutchfield and the guy told me the only way to get another amp is to get a line level input converter with an amp with Pre outs, or get an amp with speaker level inputs. Is a line level input the blue harness what goes from wire to RCA? Would that be all that I need?

GATORB8

Either should work, but the U doesn't come with the Alpine connectors on it. Basically the U would probably be easier.

Line Level Input Converter = Line Output Converter or LOC. It takes the head unit amplified signal and changes it to a lower pre-amp/RCA level. They run 10-20 bucks pretty much anywhere you get car audio equipment. You'll splice it into the speaker wires, and then connect RCAs to run to your amp.

rj.1992

Cool so do I still need the Metro harness with the U?

rj.1992

You think this would work?
http://www.crutchfield.com/p_142LOC8...0.html?tp=2001

GATORB8

That will work, but with crutchfield you pay for their customer service through higher prices, check out sonicelectronix, woofersetc and amazon for better deals

GATORB8

You don't have to use metra harnesses, but they let you keep the stock connectors intact for an easier install and easy swap back to stock.

rj.1992

Ok thanks. So since the 445U has RCA outputs, would I still need a LOC?

rj.1992

Help anyone??

JoeBoost

Why not buy a real amp from the get go - get a decent 5 channel and be done with it. Your "hacking" it together trying to do it that way.

rj.1992

Because I already have an amp for my subs from my other truck. I just wanted a lil something for the doors.