Wiring amp from stock head unit by splicing speaker wires

[imhoffg]

So on a jeep forum I'm in some guys were saying you could use line out converters to hook up a small amp to a stock Grand Cherokee head unit that does not have a dedicated sub output.

From my understanding, they are suggesting I cut the speaker wire coming from the deck, and connect it to both the amp, and the door speaker it is dedicated to, basically forming a Y with one end going to amp and one end going to speaker. Will this work?

If so, would I be able to skip the Line Converter and just attach the split speaker wire to the high level input of the amp? Is the RCA low-level converter required for this to work?

I'm looking for audio guy help since the jeep forum is more for gear heads and not techies

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[robert420 10+ year member]

i believe i know what you're trying to say... you wire in a clip to your factory speaker wires.. that plugs into the amp for the music?

 

[Kingstroker 10+ year member]

If your amp has high level input you won't need a LOC but I don't know what splitting your signal will do to the sound quality of your door speakers. I would try it with the rears and just disconnect them if it doesn't work well.

 

[imhoffg]

OK, so it will work? I'm no physics guru, but will that cut the power to the door speakers exactly in half?