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conig
Dodge Dakota
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4/24/2003
18:12:48
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 Subject: what size cap/ suggestions.
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currently in the back of my truck I have an isobaric enclosure houseing 2 xtant x-series 12's(the octagons)500watts rms 2000peak. I have an alpine mrv 1507 pushing these 600watts rms at 12volts 900watts rms at 14.4 and 1500watts peak I have been doing some research and since my llight sand dash dim considerable I'm thinking of getting a cap. question is will a 1 farad capacitor be enough for this system? or do I need a 1.5?
I need my system to be louder and I don't think I'm getting 14.4volts. especially when the subs hit. theres a great deal on 1farad lightning audio caps just wonder if thats enough.
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CJ
Dodge Dakota
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4/24/2003
19:10:33
| RE: what size cap/ suggestions.
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you should be fine with a 1 farad cap...but if you want to be absolutely sure, or if you are planning on going bigger with your stereo at some point I would spend the extra and go 1.5...but that's just me
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purple99dak
Dodge Dakota
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4/24/2003
19:16:26
| RE: what size cap/ suggestions.
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Yeah a 1 farad will work just fine. Dont waste money on a 1.5
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pelly3s
Dodge Dakota
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4/25/2003
00:36:19
| RE: what size cap/ suggestions.
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i wouldn't spend the money on the cap, i would put it into a high output altenator and a optima yellow top battery. yeah it will cost you more than a cap but will give you the power you need, and you wont have to wait for the cap to charge if you haven't run it in a while. also if you plan to add more you will still have enough power then
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conig
Dodge Dakota
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4/25/2003
10:11:18
| RE: what size cap/ suggestions.
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I have a deep cycle battery for a diesel boat, cheeper then an optima andn bigger, also I have the larger alternator stock.so I guess one farad it is.
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tek
Dodge Dakota
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4/25/2003
10:19:34
| RE: what size cap/ suggestions.
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conig,
The basic rule of thumb, simple approximation, is 1F capacitor for each 1000 watts.
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pelly3s
Dodge Dakota
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4/25/2003
10:57:33
| RE: what size cap/ suggestions.
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with a deep cycle battery and altenator you shouldn't need a cap... plus a cap will not increase your power to your amp it can only supply as much as it is getting.
http://www.eatel.net/~amptech/elecdisc/caraudio.htm
check that website out. I'm just trying to keep you from wasting money on a cap.
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conig
Dodge Dakota
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4/25/2003
13:39:35
| RE: what size cap/ suggestions.
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pelly3s thanks for the link that is a very informative site, however I still feel I should get a capacitor, i didn't see anything that discoreged me from doing so, and my interpretation was the a cap should help inmy situation.
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pelly3s
Dodge Dakota
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4/25/2003
14:34:23
| RE: what size cap/ suggestions.
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the cap may help your lights dimming because it help stablize the power going to the amp.
"Large Electrolytic Capacitors:
I've never seen any proof anywhere that a large capacitor does anything to improve the quality of the amplifier's output. Some people claim that they help to prevent your headlights from dimming but in most cases it's simply a placebo effect. If the capacitors did what they were supposed to do, every capacitor manufacturer would have a demo vehicle showing how the output changed by xdBs when the caps were in or out of the circuit. To my knowledge, no company has proven that they do anything. Take the money that you would spend on a capacitor and spend it on an alternator upgrade.
Capacitors do not increase the voltage at the amplifier. The capacitor's voltage will be equal to the battery and charging system voltage. If the voltage at the battery falls below the capacitor's voltage, the capacitor will instantly discharge into the battery until their voltage is again the same. Unless there is some significant resistance in the power wire between the cap and the battery (with no load on the power wire), there's no way for the voltage between them to be different. If there's a load on the power wire (an amplifier drawing current), the voltage at the cap and amplifier will be lower than it is at the battery. Read the capacitor page for more detailed info. "
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