Originally Posted by jdunk54nl

You will need to do one of the following, and these are in order of what I would do.

1) get a pac amp pro to interface with the sony stuff. By far the easiest and best solution

2) use forscan to eliminate the sony stuff, link in my signature on how to do this. I don't recommend doing this. It is a pain and has it's own set of issues.

3) tap after the sony amp and just live with it.

You can't tap before the sony amp without forscan changes due to how it interfaces and talks to the sony amp. You won't be able to change volume or anything.

Originally Posted by Dbraves8

using a audiocontrol i cant just splice off the speaker wires preamp but leave amp connected with wires post amp just remaining in doors not connected to anything?

Originally Posted by jdunk54nl

As said above.
You can't tap before the sony amp without forscan changes due to how it interfaces and talks to the sony amp. You won't be able to change volume or anything.

The HU literally just sends a straight signal to the sony amp. A different set of wires controls everything else (volume, fade, etc). This can be changed with forscan, but it does require that if you are going that route.

There is nothing to gain by doing this compared to a pac amp pro. The pac amp pro is way easier, works better, and solves a lot of other issues (chimes, nav sounds, etc) that isn't easy to deal with the forscan route. Well worth the cost.

Originally Posted by Dbraves8

I understand so the volume control goes through sony amp pretty much. So I could do simple route by using a audiocontrol lc2i after sony amp for only sub amp since it has bass roll off correction? Can I use it for mids and highs amp too or no since its the sub wires and will be a low frequency of 100hz or lower? Same as door speakers i cant use audiocontrol lc2i from them for sub amp because its cut off around 80hz and only gives me higher freq?

Originally Posted by Dbraves8

I could do a lc7i for all the amps right?

Originally Posted by jdunk54nl

If you are changing all speakers out and amping all speakers. Buy the pac amp pro.

If you really don't want to, tap the front speaker wires for all amps and run through your lc2i (that is a antiquated device these days) and power all your amps and use the amps crossovers to control what frequencies get sent where.

Originally Posted by Dbraves8

so even though the front speakers have signal after the sony amp without certain frequency eliminated, it will still provide low frequency to the sub amp?

I'm not new to audio but this crap sony system is BS

Originally Posted by jdunk54nl

I am not 100% sure to be honest. I never measured the sony and don't suggest anyone does what you are trying to do. I really only suggest the pac amp pro after going through and dealing with all of the forscan issues. I would never recommend just tapping the wires of a factory system without some sort of interface to clean up the signal. The audiocontrol stuff is not that. They are dumb devices. There are too many smart devices out there that are the same price.

Originally Posted by Dbraves8

so if I am only doing a sub amp a audiocontrol lc2i works essentially anything else pac amp kit?