An audio capacitor is an electrical circuit which is used to store charge temporarily. When you are listening to your music, and playing a heavy sub-bass note, the power will draw from the capacitor rather than from the battery so to ensure that the rest of the car will not be starved of power i.e. the headlights dimming. It will act as a buffer so that that the power being delivered to the amplifiers will not drop below the recommended voltages and be steady therefore reducing the risk of damage to the components.
Car audio capacitors are basically power storages in the car. These capacitors accumulate that power which is essential for the amplifier to produce great sounds. You can hear the booming bass sounds and songs with that much needed punch only because of audio capacitors. Car audio capacitors are also known as stiffening capacitors.
Capacitors are the quintessential device that aids your amplifier in terms of its overall performance. Basically speaking, these devices store energy for the amplifier to work well. As we all know by now, amps function by accepting electronic signals from the radio or head unit and amplifying it seamlessly for output towards the loud speakers, subwoofers and tweeters. But as the amps operate, fluctuations occur within your car’s power supply, sudden bursts of sound will mean that amplifiers will need to draw much needed energy very rapidly and without a capacitor, there won’t be a means for the amp to do that. That is why the sole duty of the capacitor is to literally capacitate the amp, that is, it stores electrical energy to rapidly supply sudden demand for energy from the amplifier during the fluctuations. Though commonly the sudden needs for energy are just fleeting and momentarily, the capacitors are able to complement and support the amps as it functions. Short bursts of energy are what these devices are good at. Generally able to operate within a very low energy requirement, these devices enable you to hear sudden beats and booming bass sounds.
Installing a capacitor is a great way to help stabilize the voltage being sent to the amplifier. This can help reduce the strain on the vehicle’s electrical system, reduce dimming lights, and improve sound quality of the audio system. Since each car is different and unique, knowing which capacitor is best for your system is important to know.
Installing this device needs to be planned ahead. It needs to be installed as near as possible to the amplifier and it needs to be placed strategically with proper ventilation away from external heat sources. Always take not that capacitors have a certain tendency called exponential nature of capacitor voltage decay and very low output devices can also be considered entirely unnecessary. Always look for top performing and durable products when you buy them. A sudden dim in your headlights when you turn on your sound system is a very good indicator that you are in need of one.