AUDIO MODSAUGUST 2011:A friend of mine gave me a power capacitor. It's a 1 Farad capacitor. So I decided to install it to my existing car audio setup.A capacitor is used to store a certain amount of powerwhen connected into a car close to the amp, it acts like reinforcement to the car battery. When the amplifier hits a low note it needs a lot of current so since the cap is there and close to the amp it pulls the current stored in the cap so that the bass note or notes can can sound good and tight, that way the current does not have to be pulled all the way from the battery, so basically it just reinforces the current from the amp to the battery so that the bass can sound good....a cap will be a load on the alternator, but will help when the amp needs the current for heavy bass notes.Connecting the capacitor is easy. The procedure is listed below:1. Disconnect the positive 12 volt supply to the amplifiers by removing the inline fuse near the battery (located in the car bonnet).2. Disconnect the amplifier POSITIVE wire to the amplifier and connect it to the POSITIVE terminal of the capacitor. This means that the 12-volt supply should connect to the capacitor first.3. From the POSITIVE terminal of the capacitor, run a same gauge wire to the POSITIVE supply terminal of the amplifier.4. For the GROUNDING of the capacitor, run a same gauge wire from the GROUND supply terminal of the capacitor to the grounding point of the amplifer.PLEASE NOTE: You need to "charge" tte capacitor before installing it to your system, otherwise when inserting the inline fuse near the battery will produce sparks.5. Assuming the capacitor is charged, replace the inline fuse in the main battery supply. POWER when your subwoofer needs it most!!!