Quote Originally Posted by etlsport View Post
the way this sub will have to be wired to a factory head unit is using line level input. tapping off of both rear speakers to provide a signal only, the actual power being drawn will be minimal.

normally an aftermarket head unit would have RCA terminals to provide a signal for the sole purpose of a subwoofer and the amplifier in the basslink should have rca inputs.

using line level inputs will give you sound just fine, but any distortion picked up by the factory speaker wires will be amplified too. RCA wires are shielded so they deliver a cleaner signal.

It doesnt take much power to get the signal though, most RCA signals are delivered 2v or 3v.. occasionally 5v on some nicer head units, so I don't think you are going to have a huge effect on the sound quality of the rear speakers. IIRC i think that the basslink has crossovers built in anyway, so the sub will produce NO highs or mids
exactly! That's what I was getting at. I can understand the theory of the rear speakers losing power but if they lost any it's minimal because the sub isn't using any of it technically, basically just making a longer path for the power to travel to the speakers. And yes the Basslink does have a crossover built in.