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Car Audio Discussion
General Car Audio
Capacitor vs. Extra Battery
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<blockquote data-quote="Wingman0121" data-source="post: 7954127" data-attributes="member: 620554"><p>Capacitors are only truly useful when your electrical system is already strong enough to support your equipment. Capacitors can smooth out the voltage and provide extra oomph during music peaks.</p><p></p><p>Capacitors are not useful in SPL comps because it'll end up robbing power from the main batteries to charge itself.</p><p></p><p>I heard a lot of people having good results with capacitors in a daily system with stock alternators and one/two batteries, but that's only half the story. Yes, capacitors do work as intended in low volume, but it goes downhill as soon as you crank past the point where your demand is more than your electrical system can produce. Your car is pulling power to keep things running, your amps are drawing as much power as it can, and the capacitor is pulling power to charge itself just to be emptied on the next bass hit. The gradual loss of power may not be noticeable since the capacitor is still doing its job of smoothing out voltage, you may not know how discharged your battery is until you try to start the car and it barely engages the starter.</p></blockquote><p></p>
[QUOTE="Wingman0121, post: 7954127, member: 620554"] Capacitors are only truly useful when your electrical system is already strong enough to support your equipment. Capacitors can smooth out the voltage and provide extra oomph during music peaks. Capacitors are not useful in SPL comps because it'll end up robbing power from the main batteries to charge itself. I heard a lot of people having good results with capacitors in a daily system with stock alternators and one/two batteries, but that's only half the story. Yes, capacitors do work as intended in low volume, but it goes downhill as soon as you crank past the point where your demand is more than your electrical system can produce. Your car is pulling power to keep things running, your amps are drawing as much power as it can, and the capacitor is pulling power to charge itself just to be emptied on the next bass hit. The gradual loss of power may not be noticeable since the capacitor is still doing its job of smoothing out voltage, you may not know how discharged your battery is until you try to start the car and it barely engages the starter. [/QUOTE]
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Capacitor vs. Extra Battery
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