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    logik05se's Avatar
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    Need help from someone who knows about car audio.

    I recently had an old box and amp I had laying around installed in the accord. The amp is an old model mtx thunder 81000D amp, its a 1000 watt x 1 channel or 500 x 2. The sub was a 10 inch rockford fosgate power hx-2 with 2000 peak power and a 1000 watt rms. After it was installed it sounded great, could not put the bass up more then 2 on my stock H/U or you would get distortion from the sub. I figured this was from the gain being up to high, so no prob. After about 20 min, the sub stopped hitting completly. I went to the installer the next day and he told me the sub was shot. I have used this sub for quite sometime with no problem on that amp setup and everything was well. I gave him the benifit of the doubt because the sub has been laying around for at least 3 years or better (not sure if that could have any affect though).

    My question is could he have done something wrong wiring wise to kill this sub or is it simply just because its old. I remember him saying something about he couldnt find stereo imputs on my amp, but he did something that wired it up for stereo. Problem is i researched the specs on my amp and its a mono block only amp. Could him doing whatever he did to make it "stereo" have caused this problem, and can this cause any other damage. I purchased another sub, its on its way and I will be receiving it monday. Rockford fosgate, p21004, 800 peak, 1600 rms dual 4 ohm voice coil. So Ill wire it 2ohms per coil.

    Thanks
    Rocco







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    Re: Need help from someone who knows about car audio.

    Yeah you should've carried it to a professional and had them hook it up....




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    Re: Need help from someone who knows about car audio.

    Quote Originally Posted by Louisiana_CRX View Post
    Yeah you should've carried it to a professional and had them hook it up....
    This was a "professional"...it was a shop around the block from my job.




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    Re: Need help from someone who knows about car audio.

    Quote Originally Posted by logik05se View Post
    I recently had an old box and amp I had laying around installed in the accord. The amp is an old model mtx thunder 81000D amp, its a 1000 watt x 1 channel or 500 x 2. The sub was a 10 inch rockford fosgate power hx-2 with 2000 peak power and a 1000 watt rms. After it was installed it sounded great, could not put the bass up more then 2 on my stock H/U or you would get distortion from the sub. I figured this was from the gain being up to high, so no prob. After about 20 min, the sub stopped hitting completly. I went to the installer the next day and he told me the sub was shot. I have used this sub for quite sometime with no problem on that amp setup and everything was well. I gave him the benifit of the doubt because the sub has been laying around for at least 3 years or better (not sure if that could have any affect though).

    My question is could he have done something wrong wiring wise to kill this sub or is it simply just because its old. I remember him saying something about he couldnt find stereo imputs on my amp, but he did something that wired it up for stereo. Problem is i researched the specs on my amp and its a mono block only amp. Could him doing whatever he did to make it "stereo" have caused this problem, and can this cause any other damage. I purchased another sub, its on its way and I will be receiving it monday. Rockford fosgate, p21004, 800 peak, 1600 rms dual 4 ohm voice coil. So Ill wire it 2ohms per coil.

    Thanks
    Rocco




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    Re: Need help from someone who knows about car audio.

    Quote Originally Posted by Jep772 View Post
    whats the face about?

    Im not to good with car stereos thats why I posted the question. Not for a sarcasism. I build race cars, not show cars.




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    Re: Need help from someone who knows about car audio.

    I think what he is wondering, is if you thought the gain was up too high, why did you not turn it down? Or at the very least not continue to listen to it that way until it could be checked....

    Too high of a gain setting can lead to clipping, and clipping leads to burnt voice coils, which then leads to blown subs, or the darkside maybe, I have yet to verify.



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    Re: Need help from someone who knows about car audio.

    Quote Originally Posted by Reson8 View Post
    I think what he is wondering, is if you thought the gain was up too high, why did you not turn it down? Or at the very least not continue to listen to it that way until it could be checked....

    Too high of a gain setting can lead to clipping, and clipping leads to burnt voice coils, which then leads to blown subs, or the darkside maybe, I have yet to verify.
    well i really didnt continue, i only noticed this within the first 15 minutes of trying the thing out...within 20 minutes the thing was blown.

    Im still skeptical about this whole "wired for stereo thing"...its a monoblock amp, can that have anything to do with it?




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    Re: Need help from someone who knows about car audio.

    try another professional



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    Re: Need help from someone who knows about car audio.

    Quote Originally Posted by southwest713 View Post
    try another professional
    well at this point, i dont need him anymore. I will be receiving the new sub tomorow so all i have to do is wire it up and slap it in. Is there anything that I should look out for before I put the volume up on this new sub? I really dont wanna blow it out again, although this one is now waranteed...its still a pain.




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    Re: Need help from someone who knows about car audio.

    dont buy that P2, it will not take 1000rms... And the rms on it is not 1600, maybe 800 but it pry wont even take that. Get a new sub with about 800-1000rms.




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    Re: Need help from someone who knows about car audio.

    Quote Originally Posted by GMCJimmyslt2000 View Post
    dont buy that P2, it will not take 1000rms... And the rms on it is not 1600, maybe 800 but it pry wont even take that. Get a new sub with about 800-1000rms.
    you sure? heres the link directly from rockfords site.

    http://www.rockfordfosgate.com/produ...n_US&p_status=




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    Re: Need help from someone who knows about car audio.

    Before you install your new sub, you might need to check your gains on your amp to see if they are up too high.




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    Re: Need help from someone who knows about car audio.

    that link is for a T2 not a P2 like u said earlier....the T2 will be alrite




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    Re: Need help from someone who knows about car audio.





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    Re: Need help from someone who knows about car audio.

    Quote Originally Posted by GMCJimmyslt2000 View Post
    that link is for a T2 not a P2 like u said earlier....the T2 will be alrite
    oh sorry...yea the t2 is what i picked up not the p2.




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