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Reload Thread: USX2150 keeps going into protection

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    leomon's Avatar
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    USX2150 keeps going into protection

    Any ideas why my USX2150 goes into protections when gains are set to anything above 2/3 or so? As soon as I push the gains that far the red protection light goes on and I lose my bass.







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    dave_3148's Avatar
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    what ohm load are you running it at




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    leomon's Avatar
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    DVC 8 ohm Shiva wired in parallel so 4 ohms.




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    above 2/3 ? Why are you setting your gains so high? What's your input voltage?



    97 VW Jetta - building a system from parts in my old 85 Jetta
    HU: Pioneer P740MP with 12 disc changer
    Front: 3.5" JBL GTO302s in dash
    5.25" Cerwin Vega Vega Series 502s in door
    Amped: US Acoustics USX-2050 @ 2 ohm

    Rear: Stock components
    Sub: Single 12" Vega 124 in a cheap bandpass box
    Sub Amp:US Acoustics USX-2150 bridged

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    leomon's Avatar
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    If ya mean preouts, it's 4v for the sub. The sub just doesn't put out very much bass with gains set low. Other people have seem to have had to raise their gains fairly high also w/ Alpine HUs.




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    It may be a voltage problem, most amps will go into protection when they are seeing a voltage that is too low. Take a multimeter and see what kind of voltage reading you get with the system off, then turn it on and see what it reads at.

    If you have a significant voltage dip due to the amplifier, I suggest getting your alternator rewound, or getting a higher output alternator.





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    dave_3148's Avatar
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    or it might be something as basic as a loose ground




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    avistar23's Avatar
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    Originally posted by dave_3148
    or it might be something as basic as a loose ground
    It goes into protection, it dosent turn off...

    -Mike



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