Head Unit Speaker Wire Loom

**Michael1** · 12-04-2007, 01:02 PM

I've just got a car and a new head unit, the car has the wiring loom connector for the power and the 2 front door speakers... could i also connect a RCA to the line output on the head unit to connect a amp with 6x9 speakers at the back aswell as the 2 connected straight to the head unit?

**DarquePervert** · 12-04-2007, 01:21 PM

Moved to Car Audio.

Most headunits allow you to use either speaker outputs or pre-amp (RCA) outputs, but not both.

**pokki** · 12-04-2007, 01:31 PM

I disagree, most headunits run the line outs and internal amps simultaneously.

So in answer to your question: yes.

**Michael1** · 12-04-2007, 01:53 PM

Are you sure pokki? its a LG LAC 3700R 4x50 watt cd player

**Arrow** · 12-04-2007, 02:03 PM

I personally have never seen a head unit that didn't run both at the same time. Most people use the internal amp for the speakers and use the RCAs to run an amp for their subs.

**thekl0wn** · 12-04-2007, 02:20 PM

I'm voting for both being able to be ran at the same time, but my experience is only with Pioneer and Alpine (a few Kenwoods & Clarions), and I RARELY ever hook anything up without an amp to begin with.

**Michael1** · 12-04-2007, 02:40 PM

Thank you for the help

**RedGTiVR6** · 12-04-2007, 03:18 PM

RCA outputs are always turned on, SOME head units allow you to turn internal power off. Most of these are higher end head units.

**Bildonia** · 12-06-2007, 12:20 PM

All of the head units I've seen personally have the RCA's and internal amp running simultaneously by default. A few allow you to shut off the internal amp if it is not in use to run cooler and use less electricity.