Car audio capacitors offered in different sizes (1 - 30 Farad). When an individual a capacitor for your vehicle, make sure to pick choosing the right capacitor shape. The cap size will depend as part of your RMS power of the amplifier. For example, if your amp is often a 1000 watt RMS, it becomes very helpful a choice to acquire a 1 Farad capacitor. If your amp is a 2000 RMS, you desire a 2.0 or b