![]() ![]() If you want to maintain voltage in excess of 13-14.4V, you will need a high output alternator. If you design your system for the current you intend on actually drawing, you can save quite a bit of money. A lot of people don't realize that you will not be drawing a constant 270+ amps so there is not really any need for a HO alternator unless you play test tones for long periods of time. If you want to maintain adequate current for your amps and have voltage above 13V, you need a good AGM battery and proper wiring, along with 20-50% more charging capacity than your maximum current draw. When you factor in the price of a small AGM battery verses a large capacitor like a BattCap or PowerCore (Phoenix Gold), it doesn't make any sense to buy a capacitor anymore. Even a small AGM battery has several times the capacity of even the largest capacitor. When Absorbed Glass Mat batteries became cheaper around the early 2000's, there was not much use for capacitors anymore. Phoenix Gold, Stinger, BattCap, and several other manufactures made huge capacity "capacitors" that were more like a hybrid between a capacitor and an AGM battery. When you have a lack of charging current, insufficient wiring, lack of storage capacity (battery), or a combination of any of these - you have a voltage drop.Ī cheap and easy fix for a weak system was a 1 -2 Farad cap. Not the huge mega watt amps of today (1500++) Most of the charging systems were using generators/alternators of 45-95 amps. Most of these installs consisted of amps in the 250 - 1000 watts RMS range. Since each car is different and unique, knowing which capacitor is best for your system is important to know.Here is where a lot of the confusion lies.īack in the late 80's through the early 2000's, a lot of shops and individuals alike used caps as a "band-aid" fix for voltage drops. This can help reduce the strain on the vehicle's electrical system, reduce dimming lights, and improve sound quality of the audio system. Installing a capacitor is a great way to help stabilize the voltage being sent to the amplifier. ![]() ![]() While using a cap much larger than recommended will not damage an audio system, it is not recommended because of the unnecessary strain it puts on the vehicle's electrical system. One farad to 500 watts RMS is the ratio used to determine the size of capacitor needed to supply enough power to an amplifier. Stabilizing the voltage helps an amplifier reduce distortion and produce more power consistently.Ī farad is the measurement unit used to determine the size of a capacitor. Stabilizing the voltage helps the amplifier stay cooler and run more efficiently because the amplifier is not straining to get the power it needs. It is also used as a crossover component to filter out lower frequencies and allow higher frequencies to pass.Īudio capacitors charge and discharge very fast, stabilizing the voltage to the amplifier. It generally consists of two metallic plates separated by a dielectric. This should not be confused with a battery, as a cap only temporarily holds a charge. A car audio capacitor is an electrical circuit element used to store charge temporarily. ![]()
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