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    06Sentra's Avatar
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    Help, having two problems I never had before

    Let me start out by describing my set up and what I have. I have a HO alternator, 2 optima yellow top barriers, I did the big thread upgrade and no wire is smaller then 4 gauge, the site running from the front of the car to the back is 2 gauge silver wire, 1 5 farad cap, 3 amps, 1 amp is a jbl 15001 which has my two tens, the other two amps are kenwood excelon kac-x501f, one kenwood amp has mbquart tweeters and midrange the other kenwood amp has mbquart midbass, two 2xs and 1 Eqx. Out of no where and only on certain songs or just more noticable in those songs the bass clips and also my dash lights dim with bass my hid headlights and hid fogs don't dim at all, the dimming happens all the time, both of these problems I never had when my system for first installed, I checked the most logical things first with a DMM, both batteriesand cap with car off ate 12.6 v with car on at idle both batteries and cap are 14.4v, which the system at high volume the front battery doesn't drop below 13.23v. Nothing goes into protection mode. No amps gets so hot you can't touch them, the amp that gets the hottest is the kenwood with the midbass on it and again it's no where near really hot but noticeably warmer then the other two amps. I've used the DMM to check the voltage at the bass amp with car off it's 12.5 and with car at idle it's 14.4. The resistance in the bass speaker wire with system off is 2.8 and with system on is 3.4, I don't know the oringinal resistance of the subs, I know they are dual ohm though but I don't know if they are dual 2 or 4. My next tests which will be tomorrow will be the play the system at the volume I listen to and check the voltage and resistance on a song that it doesn't clip on and thEen a song that it does clip on and to check the voltage on the second battery and cap when i have the system at volume i listen to it at. Also if I lower the volume by 2, going from 25 to 23 the bass no longer clips but dash lights still dim. Once I do the other test with the DMM I will post the results but until then does anyone have any idea on what it might be? My guess is the subs resistances are dropping to low and they need to be replaced or fixed. Thank you and sorry that you had to read all of that.







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    Re: Help, having two problems I never had before

    Really 81 views and no responses




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    Re: Help, having two problems I never had before

    people see that huge paragraph and don't want to read it



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    Re: Help, having two problems I never had before

    Quote Originally Posted by bhsdriller View Post
    people see that huge paragraph and don't want to read it
    pretty much,condense it a bit




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    Re: Help, having two problems I never had before

    Set gains properly, get batteries tested, bigger runs of wires



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    Re: Help, having two problems I never had before

    first fix the "ENTER" key on you computer then repost what you were trying to say.

    I, like many others, will not bother to read 1 huge paragraph.




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    Re: Help, having two problems I never had before

    Problem is I can't find your actual problem/question.

    But that's a lot of power for such a small set up.




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    Re: Help, having two problems I never had before

    yeah sorry about the paragraph i just wanted to tell how my system was set up and what ive done to check the problem already but my problem is this,Out of no where and only on certain songs or just more noticable in those songs the bass clips and also my dash lights dim with bass my hid headlights and hid fogs don't dim at all, i have two batteries and a high output alternator and a 5 farad cap both batteries and alternator have been tested with no problems, when the system for first installed 2 years ago no problems about a month ago i started having the problem, i dont get why i have to fix the enter key on my computer it works fine
    Last edited by 06Sentra; 04-25-2012 at 09:35 PM.




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    Re: Help, having two problems I never had before

    Maybe could b a ground becoming faulty? Or a peice of equipment like the deck or amp.




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    Re: Help, having two problems I never had before

    is there a way to check if the deck or the amp is faulty, the bass amp is less then 6 months old and all the grounds are tight, no corrosion. if I lower the volume by 2, going from 25 to 23 the bass no longer clips but dash lights still dim. could it also be that the subs resistances are dropping to low at the higher volume and they need to be replaced or fixed. cause since the system was installed i havent touched the gains and when i but in the new bass amp everything was fine with the level i set the gain to and the amp puts out less power then the subs can handle




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    Re: Help, having two problems I never had before

    One bad battery would cause similar symptoms and you'd never know it was bad without taking it out of the circuit and having it load tested.




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    Re: Help, having two problems I never had before

    oh, i thought i could just use my DMM to test the voltage with car off, at idle, and car on with system on headlights and fogs on

    and make sure it doesnt drop below 13v, which i tested and with the system on the volume ive always listened to it at the batteries dont drop below 13.23v,

    i forgot to mention that in the songs that the bass clips its not every bass note that clips,could it be that the subs resistances are dropping to low at the higher volume?




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