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Amp cut i have an alpine head unit and changer being pumped by a infinity ra 6006, this in turn is driving two qb69s and a 1200w sony sub, the problem is it cuts out when i turn it up almost as if the cd is skipping. it returns to normal when i turn it down.its done this on two different head units. please help bledger ov crammy

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  • bledger Jan 20, 2008

    hi mjap, no it doesnt have a db limiter, also how do i find out the impedance of the speakers? will it be printed on the speakers? what should it be? all wiring to amp is 4mm ofc. thanks for your help..

  • bledger Jan 22, 2008

    both amp wires are of good quality and connection,i connected the ground wire to the body, might it be better to connect to the - terminal on battery?

  • bledger Jan 26, 2008

    hello again,ive found the source of the problem, its not very technical though. the cd changer is right underneath the speakers(in my van) and the vibration was causing the cd to skip.ive now moved it. thanks for all your help, ive learned a lot.


  • Mark Payas
    Mark Payas May 11, 2010

    does it have an dB limitter.? or you are using a different speaker impedance..



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Use an ohm meter to check the impedance. impedance is resistance (ohm). and check wether you are having a voltage drop from your supply.

Posted on Jan 20, 2008

  • Mark Payas
    Mark Payas Jan 22, 2008

    have you checked if there is an voltage drop in your supply.? 1200W is too much. put a two 4700uF capacitor and if there isa voltage drop.

  • Mark Payas
    Mark Payas Jan 22, 2008


    check the voltage in high volume.

    I'll wait for your reply. write all the details. ok.


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Make sure that you have the right speaker load on your amp and also be sure that you are not starving your amp for current by having too small a wire for either the B+ or ground connections. Of course check all your connections to be sure they are in good shape.

Posted on Jan 18, 2008


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