8 pages

Car Audio Capacitor Size by System Power

Pick your total system power. Each page gives the conventional answer, the stored energy that answer really buys, how long it lasts at your current draw, and the charging system fixes that address the cause rather than the symptom.

• 500 watt system The rule of thumb says 0.5 farads for a 500 watt system. The physics says that capacitor holds the rail up for about 0.006 seconds
• 750 watt system The rule of thumb says 0.75 farads for a 750 watt system. The physics says that capacitor holds the rail up for about 0.006 second
• 1,000 watt system The rule of thumb says 1 farads for a 1,000 watt system. The physics says that capacitor holds the rail up for about 0.006 seconds
• 1,500 watt system The rule of thumb says 1.5 farads for a 1,500 watt system. The physics says that capacitor holds the rail up for about 0.006 secon
• 2,000 watt system The rule of thumb says 2 farads for a 2,000 watt system. The physics says that capacitor holds the rail up for about 0.006 seconds
• 2,500 watt system The rule of thumb says 2.5 farads for a 2,500 watt system. The physics says that capacitor holds the rail up for about 0.006 secon
• 3,000 watt system The rule of thumb says 3 farads for a 3,000 watt system. The physics says that capacitor holds the rail up for about 0.006 seconds
• 4,000 watt system The rule of thumb says 4 farads for a 4,000 watt system. The physics says that capacitor holds the rail up for about 0.006 seconds