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pls suggest a 1 farad capacitator

Printed From: the12volt.com
Forum Name: General Discussion
Forum Discription: General Mobile Electronics Questions and Answers
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=12085
Printed Date: August 22, 2025 at 5:06 AM


Topic: pls suggest a 1 farad capacitator

Posted By: kornubius
Subject: pls suggest a 1 farad capacitator
Date Posted: April 11, 2003 at 6:42 PM

I have a pioneer 760 watt max amp and a premier 12" competetion sub (2000 watt max). I'm looking for suggestions for a good 1 farad capacitor to go good with my system and where I could get it.

P.S. Will this help with my sub cutting in and out from my amp over-heating.



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Replies:

Posted By: bberman1
Date Posted: April 12, 2003 at 12:10 PM

Any 1 farad capacitor will do. Your only options will be digital or none digital. The only difference is the digital one has a digital voltage meter on it and the non digital one dose not. There are no advantages to the digital one its all esthetics. Here is a good site for capacitors they have good prices and a wide selection https://store.yahoo.com/mobile-emotions/capicitors.html

As far as over heating goes no a capacitor will not help you. What kind of amp do you have and where and how do you have it mounted?





Posted By: viper911
Date Posted: April 16, 2003 at 9:45 PM
i have a pheonix gold one ill sell you , email me and make me an offer




Posted By: SmaDoc
Date Posted: April 24, 2003 at 3:49 PM

I got a Rockford fosgate cap(the one with the digital readout) from, i believe ikesound.com for around $100 its 1farad and has a max of 20v surge output. I havent installed it yet, I'm waiting to install it either untill i order my 1200watt jbl amps, and another cap, or untill i can get aorund to getting a piece of wood to put behind my sub box to mount the cap too

The over heating thing sounds to me like the speaker is pulling more power than it should (relating to ohms i believe). A friend of mine had his jensen(460watts max i think) bridged and runnning to 2 subs. The power led on the amp kept dimming and sometimes would make high pitched sounds, from the amp its self. Later he came back over, and we hooked up 2 subs, but didnt bridge them (left channel output to left sub, right channel output to right sub) and it worked fine. If you have your amp bridged, it maybe a good idea to try it un bridged. I haven't had much experance with amps/subs/caps yet, but so far what ive done seems to be working.





Posted By: ncollini
Date Posted: April 30, 2003 at 8:02 AM
I like the lightining caps myself. but, they are all the same for the most part with exception of digital and non.

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Posted By: SmaDoc
Date Posted: April 30, 2003 at 5:08 PM

ncollini wrote:

I like the lightining caps myself. but, they are all the same for the most part with exception of digital and non.

Well, come may use different components in the contstruction of the caps, different metals for the posts and such, just a guess though, don't know for sure.





Posted By: ncollini
Date Posted: April 30, 2003 at 5:10 PM
Probably right, but I think for the most part...They perform the same function.

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Posted By: fakepete
Date Posted: April 30, 2003 at 6:20 PM
Caps are not worth it for most systems. They drain almost instantly to the amp and then the charging system has to try to recharge the cap and run the amps at the same time, causing more even more power problems. They can be usefull for an SQ system at moderate volume levels, but only if you have more than enough power on hand. Upgrading other parts of the power system would be a better investment.




Posted By: SmaDoc
Date Posted: April 30, 2003 at 7:10 PM

fakepete wrote:

Caps are not worth it for most systems. They drain almost instantly to the amp and then the charging system has to try to recharge the cap and run the amps at the same time, causing more even more power problems. They can be usefull for an SQ system at moderate volume levels, but only if you have more than enough power on hand. Upgrading other parts of the power system would be a better investment.

I only partly agree with that, except for the fact that most systems dont need caps. The biggest area caps come in is for high wattage systems. There maybe times where you dont want your engine running while you have your system on. For the most part capacitors only come in handy when there is quick changes in volume level, say, for instance bass hits, that require higher wattage to move the speaker cone/spider/coil in and out. and, so far as i know, the capacitor doesnt drain completly, it only drains maybe down to about 10volts or less (ill have to see when i actully get mine hooked up) and the way they hook up, its not much of a prooblem for them to charge back up again after a drain. capacitors react to the load that an amp can put on a power system faster than a battery can react, atleast thats how I understand it thus far





Posted By: fakepete
Date Posted: May 04, 2003 at 5:38 AM
If you do the math, a 1 farad cap at 12 volts can only provide about 72 watt-seconds of power. Thats 72 watts for 1 sec, 144 watts for .5 sec, ect. This might be enough to cover the demands in some systems and when used properly they will work. I usually don't recomend them because people are expecting them to be a huge power booster and an alternative to other power system upgrades. Try this test to see how much power a cap will provide. Charge up your cap and then disconnect it from the battey. Then use just the cap to run your amps. Times will vary depending on what amps you have, but it won't be very long, even less than a second. A cap should be the last power system upgrade if you even buy one at all. The money could be better spent on other power upgrades like an HO alternator or a second battery.




Posted By: bberman1
Date Posted: May 08, 2003 at 5:08 PM
well said fakepete




Posted By: speedwayaudio1
Date Posted: May 10, 2003 at 3:29 PM
caps are good i love them. but a good 200 amp alternator is what you need. then add the caps

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Big Dave




Posted By: Xplocivic
Date Posted: May 19, 2003 at 7:57 PM
I have a slightly used Rockford 1 farad cap I'll sell for $45.  If you still need one. Comes with brackets and terminal bolts.  Email me if interested.

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