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ok,
this is kinda another stupid question, but i just want to know if anyone has actually tried it yet... can caps help you out on an SPL system? I know they help a lot on the daily driver systems by regulating the voltages so that the rest of the electrical system in the car is not affected by the stereo and they can add a little punch to "average" systems. but i figure that in an SPL system, not having enough capacitance would only be impeding your voltage and current from the battery. right now, some of the bigger caps are about 5F big - would this be enough to power a system running a couple thousand watts? in an ideal case, if the cap could handle the voltage and current without hindering it, it would create a more stable, uninterrupted singal and therefore give better power and spl. but i'm not sure if there are any caps on the market that can produce this... |
For the most part A cap will Hinder SPL
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Hinder.
Good battery and you're good to go. -Rick |
thet're kinda useful as a bandiad for everyday, But when you wanna pound it loud, take it out.
if i could find a couple more 1 farad for cheap i'd buy them :D they are useful in home with a battery charger to run an amp [ November 23, 2004, 06:26 PM: Message edited by: CanadianBronco ] |
Originally posted by CanadianBronco: thet're kinda useful as a bandiad for everyday, But when you wanna pound it loud, take it out. if i could find a couple more 1 farad for cheap i'd buy them :D they are useful in home with a battery charger to run an amp I never thought of using it for that... I just might keep it now lol. |
yeah capacitors actually experiance a voltage drop across the terminals...usually of a few tenths of a volt. this actually makes the amp put out less power and so it hinders the SPL score. I remember back in the day MA Audio used to have an extreme vehicle in Canada with a row of capacitors on the side. all of them had digital readouts and you could see the voltage dropping as you went down the row of caps lol
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It's been tested and loses.
X |
i kinda figured that much about caps...
but does anyone have any idea about how much capacitance (in farads) you would need to run a few thousand watts uninterrupted? i'm just curious b/c in street a/b you're only allowed 1 cap and i wanted to know if they make one single cap big enough to accomodate a street competition system.... |
Originally posted by Coffeyman: i kinda figured that much about caps... but does anyone have any idea about how much capacitance (in farads) you would need to run a few thousand watts uninterrupted? i'm just curious b/c in street a/b you're only allowed 1 cap and i wanted to know if they make one single cap big enough to accomodate a street competition system.... |
Originally posted by Newb: </font><blockquote>quote:</font><hr />Originally posted by Coffeyman: i kinda figured that much about caps... but does anyone have any idea about how much capacitance (in farads) you would need to run a few thousand watts uninterrupted? i'm just curious b/c in street a/b you're only allowed 1 cap and i wanted to know if they make one single cap big enough to accomodate a street competition system.... |
Originally posted by Team Obsession: </font><blockquote>quote:</font><hr />Originally posted by Newb: </font><blockquote>quote:</font><hr />Originally posted by Coffeyman: i kinda figured that much about caps... but does anyone have any idea about how much capacitance (in farads) you would need to run a few thousand watts uninterrupted? i'm just curious b/c in street a/b you're only allowed 1 cap and i wanted to know if they make one single cap big enough to accomodate a street competition system.... Makes me wonder how long it will take the manufacturers to come out with "cheater" caps [img]graemlins/freak.gif[/img] |
1 farad of capacitance can be gotten with 4 1 farad caps, wire 2 sets of 2 in series, and the 2 sets in parallel, that's 1 farad of total capacitance, but is 4 caps, you can do the same thing with 9, 16, 25, 36 caps, etc.
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Actually they do make "caps" with very high storage capacities already. Exstatic or BatCap makes capacitors that have up to 400 farads of energy stored in them. The magic word that everyone has been stumbling around is the word Farad. Farad is used to describe a measure of energy. In street A/B I believe that you are allowed to have 1 or 2 "farads" of capacitence, the number of "capacitors is irrelevant.
Now I am not to sure of the street rules but I believe that is the way it is. If I am wrong I am sorry. Oh and caps do hinder SPL, they discharge faster then the sensor can read and your electrical system is then continuosly playing catch up. This was tested not assumed. |
yes he's right, we actually did test that
if the cap could handle the voltage and current without hindering it, it would create a more stable, uninterrupted singal [ November 24, 2004, 11:26 AM: Message edited by: Father Yuli ] |
Actually Farads is not a measure of energy. It is simply a ratio of the charge existing on the plates and the voltage at which the charge exists. (C=Q/V) It has units of coulombs per volt.
Energy in the capacitor is equal to (1/2)CV^2, so the voltage has more to do with the energy stored. By using transformers and capacitors in parallel, (Capacitance sums in parallel) you could actually do a lot with one farad, but the unit would have to be large to prevent the voltage ont he plates from arcing across rather than transferring through the electric field in the dielectric. I am sure someone in the future will try to do this, and they will have to change the rule so that only 12 volts is allowed across the plates. |
Originally posted by seege: Actually Farads is not a measure of energy. It is simply a ratio of the charge existing on the plates and the voltage at which the charge exists. (C=Q/V) It has units of coulombs per volt. Energy in the capacitor is equal to (1/2)CV^2, so the voltage has more to do with the energy stored. By using transformers and capacitors in parallel, (Capacitance sums in parallel) you could actually do a lot with one farad, but the unit would have to be large to prevent the voltage ont he plates from arcing across rather than transferring through the electric field in the dielectric. I am sure someone in the future will try to do this, and they will have to change the rule so that only 12 volts is allowed across the plates. livin Loud |
I have actually considering making a cap capable of storing large amounts of energy, but I guess it would be considered directly trying to find a loophole in the rules. Right now 1 farad stores about 72 joules of energy, so it can produced 72 watts for 1 second or 720 watts for .1 seconds. (.5*1 farad*12 volts^2)
Bump that up to 200 volts through the cap, which would actually fit in a vehicle, and you have 20000 joules. Granted, transformer loss would reduce that number, but that is enough to supply 10000 watts for two seconds off af one farad. |
hheeehehe
i guess now it has to be commercially available? livin loud |
it already is, u can buy such units from me
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woooooohhhhooooooooooo!!!!!!!!
Livin Loud |
im just kiddin. i wanted to see your reaction
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damn......... [img]graemlins/cry.gif[/img] [img]graemlins/cry.gif[/img] [img]graemlins/cry.gif[/img] [img]graemlins/cry.gif[/img] [img]graemlins/cry.gif[/img] [img]graemlins/cry.gif[/img] [img]graemlins/cry.gif[/img]
iw as realy hopin........ :D Livin loud |
sucka
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Originally posted by Father Yuli: sucka 2004 153.3 db Certified Db Drag - Loudest Street Vehicle in Canada 2004 153.0 db Certified IASCA - Loudest Stock Vehicle in Canada 2004 2nd Place IDBL IASCA Finals Loudest street/stock SUV in Canada Period. FOR SALE: Pair of Shocker Extreme 10's. Livin Loud |
might be a year off for me
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[img]graemlins/blah.gif[/img]
no no......... Livin Loud |
Originally posted by seege: Actually Farads is not a measure of energy. It is simply a ratio of the charge existing on the plates and the voltage at which the charge exists. (C=Q/V) It has units of coulombs per volt. Energy in the capacitor is equal to (1/2)CV^2, so the voltage has more to do with the energy stored. By using transformers and capacitors in parallel, (Capacitance sums in parallel) you could actually do a lot with one farad, but the unit would have to be large to prevent the voltage ont he plates from arcing across rather than transferring through the electric field in the dielectric. I am sure someone in the future will try to do this, and they will have to change the rule so that only 12 volts is allowed across the plates. |
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