Question about Directed 1100d Car Audio Amplifier

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Sounds problem i was driving with my m8 in and all of a sudden theres no sounds from my speakers. ive checked the amp and the power light doesnt light, ive already changed the fuses on the amp. the headunit shows the music playing but theres no sound. all my speakers are connected to the amp so no sound at all.

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  • sadfer Mar 13, 2008

    hmm sounds reasonable i havent checked the ground only the live ill check it soon as. The inline fuse is fine as well so ground it prolly is cheers.

  • sadfer Mar 14, 2008

    hey zzedly ur third point made the amp wrk but ive got another problem, when i turn my car on all my speakers and sub make a pop noise as though theres a surge of electricity, you got any ideas on that, it could be coz i used a paperclip to test it out but i dnt kno.

  • sadfer Mar 14, 2008

    erm well the power light stays on all the time, so i guess it does, but i read the manual and it says i shouldnt connect the rem with a constant 12V supply. So im gonna check the entire connection from the head unit to the amp as well. take any suggestions though

  • sadfer Mar 14, 2008

    yer i have thankz mate shud rank ur self up again hehe

  • sadfer Apr 10, 2008

    ive checked the head unit and i cant find anything wrong, all the wires are hooked up etc. i have a new problem now. when i hook the rem to the +v with a piece of wire the amp turns on but only goes in protection mode, and this is when the car is turned on otherwise its off.

    p.s. i hooked the rem to the +v to test if the amp still turns on.



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First things to check:

  1. You changed the fuses on the amp, but have you checked the fuse that is inline on the +12V wire? Most of the time, it's right near the battery terminal.
  2. Do you have +12V at the amp's power terminals? If not, either your +12V or ground line has a break or disconnect.
  3. Try taking a piece of wire and connecting it to both the remote connection of the amp and the +12V on the amp. This should cause the amp to turn on (if all is well). If not, the issue might be internal to the amp and would require professional repair.

Posted on Mar 13, 2008

  • 1 more comment 
  • Tygh Duval
    Tygh Duval Mar 14, 2008

    Question: With the paperclip tying the remote and +12V connections together at the amp, does the amp stay on all the time? Or does it turn on only when the car is turned on?

  • Tygh Duval
    Tygh Duval Mar 14, 2008

    Ok, that makes sense. I think the root issue here is your remote wire is not giving your amp the "turn on" signal. Tying it to the +12V will cause the amp to stay on 24/7 and could also cause the amp to "pop" on turn-on. I would check the remote connection, from dash to amp, and make sure it's working right. In the meantime, remove the paperclip so the amp doesn't drain your battery :)

  • Tygh Duval
    Tygh Duval Apr 10, 2008

    Try removing the speaker wires from the amp and see if it still only turns on in Protect Mode. If it does, it sounds like the amp has internal problems. If it doesn't, try reconnecting the speaker wires until the amp turn on in protect mode. Then that wire will be the one to check, end to end, that it's not grounded, touching +12V, etc.

    If you have a meter handy, you could check the REM output from the head unit with reference to ground. You should have almost 0V when the head unit is off and (I believe) +12V when the head unit is on.



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