Question about Alpine PDX-1.1000 1000W x 1 Car Amplifier Car Audio Amplifier

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Amp cuts off

I have a Alpine pdx1.1000 on 2 12" db drive platinum series. when the bass hits its cuts off. If I unplug one sub it doesnt cut off and both subs work fine when I plug them in one at a time. its when both are plugged in it cuts off and comes back on. It worked fine until tonight. thanks in advance

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  • atom230 Dec 31, 2007

    i have 2 12" alpine type r subs and when i turn the volume up the amp cuts out and a red light turns on,on the amp. if i shut the car off turn it back on again it works fine for a bit then it happens again. i have aredy upgrader the wiring to 4 gadge to the amp and 12 gadge to the subs

  • hunds02 Oct 08, 2008

    I have a alpine pdx1.1000 amplifier powering one Orion HCCA 12.4. This sub is a DVC 4-ohm sub. When i wire it in parallel,( positives to positives and negatives to negatives) and turn it up, the four 20A fuses blow whenever it hits a loud and low freq. note. I really don't know why that happens, the PDX 1.1000 should be stable at 2 ohms but it looks like its not.. Right now i have it wired in series (8 ohm load), it sounds good but i want to have it work under 2 ohms. Any suggestions or tips???



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Hey there. i have a PDX 1.1000 with 2 12" Type R Subs. I had the same problem for a long time. but i upgraded my power cable from 4 gauge to 0 gauge and put another earth from the battery to the chasis. the bass hits alot harder now and rarely cuts out. except now im having the problem of the 4 25 amp fuses blowing on the amp....

Posted on Jan 17, 2009

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You may have a problem with the power source feeding the amp. You need to check the voltage across the amplifier's B+ and ground terminals when the amp is playing/cutting off. If it's dropping below ~11 volts, you need to determine why it's dropping so low.

Posted on Sep 19, 2007


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Amp protection light comes on when raising volume...

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