I'm trying to add an amp and subs to a 2004 Sonata but I don't want a new headunit. I've heard I can use the factory headunit with something called Speaker Level Inputs. What are they? and How do they work?
Any help would be appreciated.
You're trying to add a system to your car with an amp and subs to your stock factory headunit. I'm not to familiar with your 04 Sonata, but most stock factory decks do not provide any sort of rca out put. You will need something like a converter. I would suggest a sound gate converter. With this you will need to tap into speaker such as the rear, and connect this converter. Which then will give you an output option, and that would be were you will run your RCA's to the amp. As far as ground and power i would assume you already know how to run those. For your Rem you must tap into your igntion turn on key.
What 94legend is refering to is a line level converter, which takes the signal from your rear speakers and converts them to an RCA out.
But 94legend, what mhoffman39 is referring to is the speaker level input on his amp. Most class A/B amps will have an input that accepts a + and - from the left and right chanels.
And mhoffman39, to answer your question, what you would do is run wires from where the + and - connect to either your front or rear speakers to the speaker level input of the amp. Preferably the rear speakers, cause that is a shorter run of wires, but I'm not sure if your truck has rear speakers or not. Standard cab usually won't, but ext cabs and beyond do have rear speakers. Check your setup to see which is correct.
Paul
For sound quality reasons...I recomend not to use the speaker level inputs.
A decent LOC with an impeadence matching coil, not just the cheap ones with only two resistors inside, is what you need.
At the shop I worked at, these sold for about $25, you can probably get it cheaper.
I agree with flynntech. There is usually a huge difference in sound quality and frequency response.
Peripheral makes some good LOCs too.
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Build the box so that it performs well in the worst case scenario and, in return, it will reward you at all times.
Thanks for all the help fellas. You really cleared things up for me and the link to Peripheral was great.