Re: Necessary to sum tweeter and door speaker signals?
The fronts are not full range anywhere. I believe the rear door speakers are (they are in the Rams). If you tap the rears, you lose fade capability. These systems are a real PITA to upgrade. You have to spend a lot to make a noticeable difference.
2011 Laredo X in White Gold: QT1, V6, Tow Package, Sunroof, Mopar Step Bars/Slush Mats, 20% Tint, Airaid Intake.