Subwoofer yet?

[WeGo250]

I'm running a full system.
Focal Evo Flax 3 way system up front, coax rear, JL12W6 in a sealed birch box, Ampro, Mosconi 8.10 DSP, and an Alpine R7 amp for the sub, and tuned.

 

[Jersey Skier]

Hi, I want to do this same thing. Can you explain how you ran the power wire from the amp back to the rear battery? And how did you route the cables from the Beat Sonic to the amp under the seat? I haven't done much car audio work so any advice and pointers are very much appreciated!

Beatsonic has a plug and play harness to grab power under your seat from the power seats. I haven't done the Sub yet but I had the discussion with Beatsonic You just unplug the power seat connector and plug this in the middle of the circuit.