sbelew
10+ year member
Senior VIP Member
I am getting ready to start my installation in my F150 Extended Cab. I have an FI Audio X12 sub with BP Power Option, an MB Quart DSC4125 amp and 2 door speakers in the front doors. I may in the future add another amp (possibly an Elemental Designs Nine.2) and 2 more speakers into the rear doors so I would like to set things up to be able to easily add these later. The amp install guide states to use 4 gauge power wire to it, so I am assuming an amp that I decide to add later will also require 4 gauge. I would like to make just 1 power run to the back seat of the truck where amp(s) will be mounted. What size should I use? And what size speaker wire should I use to the speakers and what size to the sub?
