[thedrod]

Hello everybody. I am a new Civic owner. Just got a 2009 Civic EX-L Sedan with Navi.

I've been researching a lot about this car already. Lots of good info on here as to how to run power cables and such and where to connect remote turn-on leads.

However I can't find much about using the stock navi system with an aftermarket amplifer.

I had a few questions somebody might be able to answer.

Since there is an available subwoofer option, the Navi system apparently has a Subwoofer out on the back of the head-unit which allows the sub level to be adjusted independently of the rest of the speakers.

If your car does not have the Honda subwoofer system, does anybody know if wires are already run to a location for the possible future installation of the Honda system? I want to tap into this output to provide a signal to my aftermarket amplifier.

In the sound options on the Navi system, there is a subwoofer level adjustment in the same menu as the Balance, Treble, Bass etc... however it doesn't show up on mine...I am assuming this is because I do not have the subwoofer. Anybody know if this option just shows up once the Honda amp is installed? Also, if an aftermarket amp is connected to the same output, would the subwoofer level control just show up magically by detecting a device at the other end of that output?

Any input would be greatly appreciated.