Upgrading a BMW 325i sedan with Harmon/Kardon 10 speaker system. Leaving in the OEM head unit but replaceing speakers and installing two amps, 4-ch for speakers and mono for sub.

My questions. What signal is coming from the head unit, speaker level or preamp? Do I need a LOC or line driver to convert the signal to my amps? The amps I get will have high and low level inputs and I will run the preamp output into the other amp.

Any help would be greatly appreciated.

 

what yr of car ?

 

It's a 2004 E46 325i Sedan.

 

look at the dql-8 (AudioControl)

 

Since your amps will have high level inputs, just use those inputs, theres no need to buy a LOC.

 

x2

 

Sorry if I sound a little dumb here ...but what is dql-8?

Thanks for the help guys I will try without a LOC.

 

go to www.AudioControl.com and look at it