Sub and amp install - Nissan Titan Forum Aug 03, 2017Ok guys so I need some help. I have a 2005 4x4 Titan. I have the factory Rockford fosgate 10 speaker setup already in it. I just bought 2 12" subs and an amp. I wanna install it myself. I want to get rid of the factory amp and 8" sub. What will I need to install and how do I go about doing so. SOMEBODY PLEASE HELP ME! Thank you in advance lolAuthor: Allan Kristiansen Nissan Titan Speaker / Sub Installation - CARiD Customizing your Nissan audio system with an innovative subwoofer and/or speakers is the best way to dramatically improve its sound quality. Nissan Titan speaker / sub installation products gathered on our digital shelves make installation a breeze.