Controling subs?

Bryce Jackson Bronze Member Username: Point78 El cajon, Ca Post Number: 18 Registered: Feb-05	Posted on Friday, March 04, 2005 - 02:11 GMT what is it that my hu has to to have so that i can controll the subs output.
Brian H Bronze Member Username: Bnh142 Post Number: 60 Registered: Nov-04	Posted on Friday, March 04, 2005 - 02:38 GMT You need at least a subwoofer level control and a subwoofer pre-out. They are very common in most head units. Some head units can adjust sub phase and other parameters as well.