I wanted to install a sub in an XF Luxury with the basic audio unit. I purchased an under seat unit by Pioneer that allows patching in on the standard speaker output when I dedicated sub output is unavailable. Could somebody please advise the best and most accessible place to do this patch?

 

 

Did you ever complete this? Thinking about doing the same. Could use some advice.

 

I did a lot of trial and error tapping into front vs rear. I ended up tapping to the front stereo L and R lines at the amplifier in the trunk. Needed to use a car trim pry tool to pop the trunk fastener and then pulled the liner down where you can see the amplifier.

I used a Jaguar XF manual which I found online somewhere, maybe on this forum, it had the wiring diagram for the amp for my 2012 base stereo (no sub). I used that to determine phase (+ and -) and determine wire colour coding for which one is which.

Also I recommend getting an active line output converter I got the LC2i because I had to turn the gain up to max on the subwoofers built in amp which it wasn’t good enough. The LC2i boosted the signal so I didn’t have to max anything.

I do wish I got a bigger sub because my alpine underseat sub is meant to be under the seat and not in the trunk, so it is kind of weak and does not hit the ultra low frequencies good enough. For the amount of power it uses it is still good. Still is an upgrade as I notice a decent improvement and some songs sound really good with it actually.