Question about Rockford Fosgate Punch P550.2 150W x 2 Car Amplifier Car Audio Amplifier

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Power fluctuations I have this Amp hooked up to 2 12's type r subwoofers. they hit pretty hard and then sometimes they hit really hard. I mean they sound fantastic. But its only for a couple of minuites and then it goes back to just a decent amount of bass that Im used to. I cannot replicate these situations regardless of remote settings, lights on lights off...etc..etc. If you need more information I can find it out. Me and my friend put this installation together and its just driving me insane! thankyou in advance! -jj

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  • jjstanman69 Sep 17, 2008

    Ok I left out information untill i looked at it thoroughly. I completly checked every fuse, rewired it to this diagram which matches with the subs that I have ( bottom). The only problem I found was the Fuse between the battery and the amp had minor corrosion.The alternator was running a little over 14 volts, the battery at 13. The 100Amp fuse was a little over 13 volts and so was the terminal of the 4 guage wire from the battery to the amp. The temperature is not a problem because its inside my truck compartment and while im driving listening to it the tempatures never exceed 80 degrees, also the amp runs very cool ive never fealt it to be to hot to the touch. I also checked the ground to be completly sure that's not a issue compacting the bigger problem. Im gueesing tghe next best thing is a capacitor. Meh.... mabey this helps J.J.



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This is due to a few things, Your amp, the tempurature in the car, the size gauge of wire, and the alternator, When your hittin hard bass and you notice over time it kinda dies out, it means that your sub is losing power cause of the lack of power your battery and alternator produce, If the amp is fairly big then it needs alot of power to keep it at peak performance, I would recommend getting an capacitor that is well suited for your amp, this will give you the constant power you need and the bass will always stay bumpin hard for a significant amount of time, Also the tempurature greatly affects the performance of amps cause the hotter it gets the less power it delivers then possible shut off where then it will cool off for a brief moment then return for only a litle while if still bumping

Posted on Sep 16, 2008


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