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Old 01-12-2010, 12:22 PM
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Question Lights are dimming w/bass

Hi folks, I got a 12"Kicker Solobaric sub installed in my car with a 1000w Alpine monoblock and when I'm slamming some techno or IDM the bass makes my headlights dim. Is this problem fixed with a Capacitor or is there a better alt/battery combo I could get? Is there a product that fixes this? Keep in mind that I have just started modding the stereo and I would like to perform the better solution and not the quicker/cheaper solution.
Old 01-12-2010, 12:25 PM
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get a Power Capcitor, it should help.
I have a Yellow Top Optima + 2 farad cap+ 1400 watt amp + dual 10" JL's and my lights don't dim.
Old 01-12-2010, 12:27 PM
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+1 to Jedi. OP, you are draining too much power from your car battery
Old 01-12-2010, 12:38 PM
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Great! I've got the same battery, bought it 2 mnths ago. If I got a farad cap I mount it near the amp or the battery? Any other caps suggestions?
Old 01-12-2010, 12:42 PM
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I've always gone with the 1farad for every 1000 watts and doing a quick google search confirmed this as well.


What Size Car Audio Power Capacitor Do You Need?
Since the beginning of car audio power capacitor time (late 1980's) the accepted rule has been one Farad of capacitance per 1,000 watts of power with a minimum of one Farad (that last part is often forgotten). I've never seen any details on how they came up with that so I don't know what it's based on. But no one seems to have offered a better guideline so that's what we still use today. More isn't necessarily better but it doesn't hurt either.
http://www.caraudiohelp.com/newslett...citor_myth.htm



You can mount the cap in the trunk, that's what I did.
Old 01-12-2010, 12:46 PM
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Awesome. Doctor Prescribes 1 Cap. Should be easy as pie. eating pie that is, i have no idea how to make a pie.
Old 01-13-2010, 11:29 AM
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Caps do not eliminate dimming, a new battery or a kinetik powercell will do the job. There $100 including shipping on amazon.com
Old 01-13-2010, 06:03 PM
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Originally Posted by Pullett1
Caps do not eliminate dimming
Like hell they don't. I've even watched a car step through the amount of farads and watched the lights dim less and less with each farad added.
Old 01-13-2010, 06:09 PM
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Originally Posted by Pullett1
Caps do not eliminate dimming,

much to learn you have my young Padawan.
Old 01-13-2010, 07:54 PM
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Originally Posted by firebirdude
Like hell they don't. I've even watched a car step through the amount of farads and watched the lights dim less and less with each farad added.
read this then:
http://ezinearticles.com/?Car-Audio-...ney&id=1552880

and here as well to all the Cap lovers out their:
http://www.youtube.com/watch?v=XyKqWqzHMVI

Last edited by Pullett1; 01-13-2010 at 08:05 PM.
Old 01-13-2010, 07:57 PM
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Originally Posted by Chad D.
Great! I've got the same battery, bought it 2 mnths ago. If I got a farad cap I mount it near the amp or the battery? Any other caps suggestions?
the power cable from your capacitor to your amp should be as short as possible.
Old 01-13-2010, 08:22 PM
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/\ thanks, that should be easy.
Is there a better brand or the cheap craigslist Power AcoustiK/Stinger 2.0 Farad for 50$ should be good.

---off topic but my taillight is foggy.
Old 01-13-2010, 08:33 PM
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Originally Posted by Chad D.
/\ thanks, that should be easy.
Is there a better brand or the cheap craigslist Power AcoustiK/Stinger 2.0 Farad for 50$ should be good.

---off topic but my taillight is foggy.
check out this video then:
http://www.youtube.com/watch?v=yIRV7...response_watch
Old 01-13-2010, 08:35 PM
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Originally Posted by Pullett1
read this then:
http://ezinearticles.com/?Car-Audio-...ney&id=1552880

and here as well to all the Cap lovers out their:
http://www.youtube.com/watch?v=XyKqWqzHMVI
and these two clowns are WHO???
Old 01-13-2010, 08:37 PM
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Originally Posted by Chad D.
/\ thanks, that should be easy.
Is there a better brand or the cheap craigslist Power AcoustiK/Stinger 2.0 Farad for 50$ should be good.

---off topic but my taillight is foggy.
i'd recommend getting one with a built-in voltmeter and also one with an audible warning. those features can be useful for checking your system's performance. Stinger has some good products, i'd recommend them. personally i'm using this product: http://www.crutchfield.com/p_120PP10...M.html?tp=2614

for the tail light, take it off, dry it out and get a new gasket from Mazda or make your own sealing gasket. (DO NOT DRILL HOLES IN YOUR TAIL LIGHT!)
Old 01-13-2010, 08:48 PM
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Cool, thanks. There is one in the locals with the voltometer.
I'll get a new gasket at the dealer. would BtB warranty cover that?
Old 01-13-2010, 08:53 PM
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Originally Posted by Jedi54
and these two clowns are WHO???
Exactly my thoughts.

Just like the 15 year old's reaction in your video.... "capacitors. Where do I begin." This issue has been argued back and forth for a solid 10 years now (Yes I can remember having these same discussions 10 years ago).

First things first, I don't think anyone will argue that a H/O alt is the ideal solution. It is the source of all that is electrical in the car. However, they can be damned expensive. Take the RX8 for example. You priced them? They're in the $400-500 range for the bottom-end ones.

Your statement of "caps do not eliminate dimming" is false. If you have a small amount of dimming, a cap is a cheap solution for this. I've watched them fix dimming issues time and time again AND I've come in contact with that same customer nearly 2 years later, who is still enjoying the benefits. So don't jump on the caraudioforum.com bandwagon and say that it puts more stress on the alt and eventually fries it. Don't argue. Prove it to yourself. Get your hands dirty and eyes ready.

Last edited by firebirdude; 01-13-2010 at 08:56 PM.
Old 01-13-2010, 08:58 PM
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Originally Posted by Chad D.
I'll get a new gasket at the dealer. would BtB warranty cover that?
unfortunately not. Mazda is now saying that the condensation is normal. they just dont feel like paying to put new gaskets in so they're passing the buck to you. check out what it will eventually do.

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Old 01-13-2010, 09:03 PM
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Originally Posted by firebirdude
Exactly my thoughts.

Just like the 15 year old's reaction in your video.... "capacitors. Where do I begin." This issue has been argued back and forth for a solid 10 years now (Yes I can remember having these same discussions 10 years ago).

First things first, I don't think anyone will argue that a H/O alt is the ideal solution. It is the source of all that is electrical in the car. However, they can be damned expensive. Take the RX8 for example. You priced them? They're in the $400-500 range for the bottom-end ones.

Your statement of "caps do not eliminate dimming" is false. If you have a small amount of dimming, a cap is a cheap solution for this. I've watched them fix dimming issues time and time again AND I've come in contact with that same customer nearly 2 years later, who is still enjoying the benefits. So don't jump on the caraudioforum.com bandwagon and say that it puts more stress on the alt and eventually fries it. Don't argue. Prove it to yourself. Get your hands dirty and eyes ready.
Yea, your right: "If you have a small amount of dimming, a cap is a cheap solution for this" I was talking about alot of power like 2,000+ Watts RMS. Cuz my old car had dimming problems with a 2.0 Fad cap & I didnt want to go through that again, so i went with a kinetik powercell. It is Overkill but, I feel better with a second battery.
Old 01-13-2010, 09:11 PM
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I have a quality battery, the dimming is only bad when I am cranking it, which I only do on the highway. I actually noticed it the most when it was snowing. If that doesn't work well then I will have to do a step 2, but I don't think that will be nessesary.
The h/o alts are very pricey.
Old 01-13-2010, 09:15 PM
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Originally Posted by Chad D.
I have a quality battery, the dimming is only bad when I am cranking it, which I only do on the highway. I actually noticed it the most when it was snowing. If that doesn't work well then I will have to do a step 2, but I don't think that will be nessesary.
The h/o alts are very pricey.
trust me, i've got basically the same setup as you and i have absolutely no dimming. i'm using a 2F cap though.

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Old 01-13-2010, 09:17 PM
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oh yeah, i also have the yellow top.
Old 01-13-2010, 09:20 PM
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what size are your power cables? do you have a grounding kit installed?
Old 01-13-2010, 09:21 PM
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Very simmilar, except I have the amp/sub in opposite spots. Sounds great. I'm going to get a 2farad friday.
Old 01-14-2010, 06:14 PM
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no grounding kit.


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