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HELP HELP, I duno if its the cap or what, but after 10-15mins of music sub cuts off!!

Old Nov 11, 2004 | 06:01 PM
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HELP HELP, I duno if its the cap or what, but after 10-15mins of music sub cuts off!!

ok i dont know if it is the capacitor or what but ever since i hooked up the cap, the sub plays for like 10 -15 mins then it stops. now the amp is always on and the sub isnt. this never happened to me before, but since i got the cap hooked up after 10 to 15 mins of music the sub just stop, and then 5mins later it turns back on. my rca and speaker connnection are good, so are my power and ground[obviously if the amp is on] the amp pushes 200rms and my sub can handle 400rms. i have 8awg wire to the cap and 4awg wire to the amp from the cap, now could it be that the cap isnt grounded right that causes the sub not to play? btw i have a xplod class damp [no this one isnt garbage lol] and a kicker 12inch cvr. its annoying, i mean it sounds good but damm i finally have the system up to par and its fawking up on me, is it hte cap or what? or is it because i dont really warm up the speaker before paying pllzz help neting
Old Nov 11, 2004 | 09:48 PM
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come on guys, need help,
Old Nov 11, 2004 | 10:08 PM
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...get rid of the cap. If it works, keep it that way You shouldnt have to warm up the speaker much..unless its snowing outside Id get rid of the cap 1st, you dont need 1. Not with that little power being pulled.
Old Nov 12, 2004 | 01:57 AM
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yeah if you need a cap for that power id just push the car into a lake...
Old Nov 12, 2004 | 03:27 AM
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so the cap is causing this? man i really like it dam
Old Nov 12, 2004 | 05:03 AM
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I doubt it's the cap. Get a digital volt ohm meter and measure the voltage at the B+ & ground AT the amplifier with the amp running as you normally would. Try that for starters. It sounds like either a voltage problem or a signal problem. A couple things I can see: 8AWG is too small for that length of wire....next, a 400Wrms woofer matched up to a 200Wrms amplifer. So it's like trying to suck a golfball through a garden hose with the wire being too small...and you're expecting your amplifier to push twice as much power for the rms rating of the woofer.
Old Nov 12, 2004 | 06:44 AM
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You are sending amp into protect....either its working to hard to generate demand through small wire(8ga) or you are drawing a lower impedance than the amp can handle
Old Nov 12, 2004 | 09:21 AM
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man this sounds like my physics class, i wish i paid attention. lol. ok so first things first, change the awg of wire, then well i think i have a volt meter and check that, and that should be it? but i thought if i got the cap, i dont need the 8wg, i thought the cap supplies the more voltage?
Old Nov 12, 2004 | 09:34 AM
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but guys the amp doesnt go into protect mode, and this has only been happening since i got the cap and lowerd the gains. before i got the cap i had the gains alllll the way up, now its at 3quarters up and sounds real good. but it just stops after awile then goes back on.[the sub] this even happens at low volumes
Old Nov 12, 2004 | 11:09 AM
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There's folks that will tell you that all you need to do is increase the size of the wire and lose the cap....and that "may" work in some instances. The capacitor is there to stabilize the Voltage when you're drawing the most amount of current during the heavy bass notes. So the cap doesn't supply "more" voltage, just stabilizes the voltage that you currently have at that given moment. Now with an 8ga wire you are going to have some voltage drop from front to back, so you will have, let's say 11V of stabilized Voltage when the bass hits. It's not a band-aid for a poor charging system. There's a just a little math and some technical know-how when it comes to setting this up correctly. The only thing I'm baffled on is the "gain" issue. Not really sure why you're tweaking those after installing the cap. That should have nothing to do with the input Voltage of the RCA's.
Old Nov 12, 2004 | 12:26 PM
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no the only reason i tweaked the gains is because my amp was hard to reach the gain controls on my previous setup, so since i was adding the cap, i had to move the amp neways, so i just changed the gain. so i should go and get 4 awg then
Old Nov 12, 2004 | 04:00 PM
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I would say "yes"....go with the 4ga...and keep the cap.
Old Nov 12, 2004 | 08:34 PM
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alrite thanks guys, ill keep yal updated.
Old Nov 12, 2004 | 08:48 PM
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you should be fine with 8 gauge for a 200 watt amp. befire i upgraded to a larger amp, i ran 8 gauge to my 200 watt amp as well, but no issues of cutting out etc. now i'm running 4 gauge to my larger amp.
Old Nov 12, 2004 | 09:11 PM
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man i am so confused right now. all i want to know is the cap causing all this problem?
Old Nov 13, 2004 | 12:28 AM
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STOP THIS CLUTTERING


8awg is FINE for upward to 400w/rms
If you checked all the grounds, ect... everything is ok, then go back to the cap. REMOVE it, if the amp stops going into protect mode, problem solved.
Old Nov 13, 2004 | 09:06 AM
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IT WORKS!!!!!!!!!!!!! uhm ahhh, well u see, uhm the ground wire was you know,..... kinda loose.... lol sorry about that guys but thanks!!
Old Nov 13, 2004 | 09:22 AM
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Originally Posted by 2 Da Max
IT WORKS!!!!!!!!!!!!! uhm ahhh, well u see, uhm the ground wire was you know,..... kinda loose.... lol sorry about that guys but thanks!!
where is your ground connected to? it should be to the cap no... thats the best ground.
Old Nov 13, 2004 | 01:39 PM
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Originally Posted by 2 Da Max
IT WORKS!!!!!!!!!!!!! uhm ahhh, well u see, uhm the ground wire was you know,..... kinda loose.... lol sorry about that guys but thanks!!
Old Nov 13, 2004 | 02:59 PM
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yo its not the ground! like the amp on the light starts to dim now then the sub cuts off
Old Nov 13, 2004 | 03:31 PM
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uhh...take the cap off...see if it still cuts out...
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