Free Shipping on All Orders 1-866-764-1801

Vist our Online Store
+ Reply to Thread
Results 1 to 5 of 5
  1. #1

    Member Sales Rating: (0)

    Join Date
    Apr 2005
    Posts
    2

    Unhappy 400.4 not working

    I need some help

    Installed 400.4, mmc5250, mmc6500, and a new head unit in my truck today.

    when the h/u comes on the amp flashes power and thermal lights,
    the power light does not stay on, and there is no sound, i dont think the amp is being turned on by remote wire.

    Any suggestions would be greatly appreciated

  2. #2

    Member Sales Rating: (0)

    Join Date
    Dec 2003
    Location
    Chattanooga, TN
    Posts
    11,828

    Default

    It sounds like your amp is staying in protect mode so you have a wire shorting out or its running too low an impedance.

    If youre only running those 4 speakers then thats not the problem.

    Check all your power wires. Make sure nothing is shorting. My first stop would be the ground. Try another location and see if this works. If not then check the power wire to see that its not shorted out or stripped on something.

    It could also be your remote wire from the head unit. If its not getting power it wont turn the amp on.

    It could also be one of your RCA's is shorting out. Unhook the front channels and see if it comes on. If not then unhook the rears. If neither works then its probably not your RCA's as I doubt all 4 would be shorted.

    Try these and let us know. If nothing works then we'll look further.
    polkaudio sound quality competitor since 2005
    MECA SQ Rookie of the Year 06 ~ MECA State Champ 06,07,08,11 ~ MECA World Finals 2nd place 06,07,08,09
    08 Car Audio Nationals 1st ~ 07 N Georgia Nationals 1st ~ 06 Carl Casper Nationals 1st ~ USACi 05 Southeast AutumnFest 1st

    polkaudio SR6500 --- polkaudio MM1040 x2 -- Pioneer P99 -- Rockford Fosgate P1000X5D

  3. #3
    Polk Engineer
    Member Sales Rating: (1)

    Join Date
    Apr 2004
    Location
    Annapolis, MD
    Posts
    1,441

    Default

    My wild guess would be bad wiring on the speaker side of things. Check everything between the amp and the speakers.

  4. #4

    Member Sales Rating: (0)

    Join Date
    Apr 2005
    Posts
    2

    Default

    turned out to be the ground

    I put it in more contact with the body and not so much the ground, and it fired right up

    Thanks to Macleod, it is people like this who make these forums work.

    By the way the mmc6500's and the mmc5250's really sound great powered off the 400.4, now all i need is some subs.

    Thanks again I really appreciate it.

  5. #5

    Member Sales Rating: (0)

    Join Date
    Dec 2003
    Location
    Chattanooga, TN
    Posts
    11,828

    Default

    Hey!! I was right!!!

    Somebody right this down! Probably wont happen again soon. :D
    polkaudio sound quality competitor since 2005
    MECA SQ Rookie of the Year 06 ~ MECA State Champ 06,07,08,11 ~ MECA World Finals 2nd place 06,07,08,09
    08 Car Audio Nationals 1st ~ 07 N Georgia Nationals 1st ~ 06 Carl Casper Nationals 1st ~ USACi 05 Southeast AutumnFest 1st

    polkaudio SR6500 --- polkaudio MM1040 x2 -- Pioneer P99 -- Rockford Fosgate P1000X5D

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

     

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts