Question about Kicker SX1250.1 Car Audio Amplifier

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Service light on

I have a kicker sx 1250.1 amp and it says service amp what do i need to do

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You may have blown your amp. It just depends on how hard you run it, and how hot it gets. Check the onboard fuses and make sure they are still good. You can try pulling the heat sink off (the top cover) and look to see if anything is black or burned, even if there is a lot of dust inside the unit. If you got it from a store like best buy you can try taking it there and have them look it over. Places like that tend to have a service tech on hand.

Posted on Jul 12, 2009


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1976 pioneer sx 1250 receiver has no sound from receiver to speakers

1976 pioneer sx 1250 receiverhas no sound from receiver to speakers

check the integrity of speaker systems,

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  • BLAST Port (Bass Level And Signal Transfer) Provides Remote Bass Level Control and control signal transfer between multiple SX amplifiers

  • Here is the manufacturer's accessory page to the remote:

    Here is one on eBay:

    And here is a note from Kicker on how to make a control yourself for strapping multiple amps together: I have two or more Kicker SX or KX subwoofer amplifiers. I don' t want to use all those separate bass level controls. Is there a way to make them all work with a single Kicker control knob?
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    You need to swap your main battery for a high performance kinetic... and maybe even ad a small kinetic in the back as well (fused separately) and see how that works for you. Just one oversized kinetic battery replacing your stock battery may do that trick. Remember, its best to install two batteries of the same brand and size, its ok to use the same brand and two different sizes (a kinetic 2400 and a kinetic 600 for example, but with an isolator) but its easier and simpler to just put in a kinetic 1200 or something that will replace your stock power sucking ineffecient lead acid stuff.

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    you are actually not bi-amping the unit, you are bridging the amp. this really only works as long as all channels produce equal power. next the bad news is that typically home stereo amps are not wired internally to bridge channels.

    bi-amping a speaker refers to connecting on channel to the highs and on channel to the lows. the receiver would need to be be able to process the outputs via a crossover network to split the frequency range in half so the appropriate frequencies went to the correct speaker.

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    Your only recourse at this time is to check with local servicers that may have one around in their old stock. Or check Ebay for a parts machine that you can salvage one from. I believe that the volume control from an SX-850 will be the same, so you can search for one of those as well.

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    my kicker was doing the same thing, and come to find out the power was loose,
    1.check power connection,
    2. check ground
    3. check remote wire.
    4. check that your amp isn't mounted on -metal-
    5. check your fuses onboard the amp,
    6.check you speaker wire
    7.check your rca jacks
    8. check that your gains aren't too high for the wattage

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