Results 1 to 4 of 4

Thread: Car Subs/AMP in home powered by a Computer Power Supply. HELP

  1. #1
    Join Date
    Jan 2008

    Car Subs/AMP in home powered by a Computer Power Supply. HELP

    I've been reading some of the other posts on here and I ran into a problem. Every thing is hooked up but the AMP does not turn on when I send sound to the Speaker input terminals. I know why it's not working but I don't know how to fix it. I'm using a Kenwood KAC-8103D amp. My problem is the P.CON, the Power Control Terminal; it controls the unit ON/OFF. Now I know in a car you hook the Deck, Center Unit, Head Unit, CD receiver, etc. whatever you want to call it to that P.CON. I don't have a Center Unit. I'm using a computer Power Supply. I will be using a TV or computer to supply the audio so I've set it up with RCA connections to change from source of audio to the next like regular speakers by simply plugging the audio in. When I get this finnished I was planning on taking pictures, maybe video too, and doing a step-by-step tutorial since I haven't found any good ones.

    How do I make the AMP turn on?

  2. #2
    Variable Bitrate
    Join Date
    Nov 2007
    Your post is hard to read, but here goes. Your amp should have 3 power wires.

    - ground
    + battery
    + remote (i guess this is your P.CON)

    Either conenct the + remote to the + battery terminal for always on operation.
    Or connect the + remote to a switched + 12v source.

    WARNING Amplifiers draw a lot of amps, don't be surprised if you max out your powersupply.

  3. #3
    Join Date
    Oct 2006
    Las Vegas
    in my experience, Remote, or P.CON, is a high impedance input and draws virtually no amps. all of the draw is from Positive (main).

  4. #4
    Join Date
    Jan 2008
    Thanks Pokki. It worked. I just have to fine a volume nob that will work now. Even though it does work I still need a bigger power supply with high enough Amps. I only have 17a and I need 40.

    Update: I am now searching for a new power supply. I need to pick up some wood so I can start working on the housing box for the power supply and amp also a separated box for the two Kenwood subs. Work will begin this weekend. When I am finnished you can expect a fully pictured step-by-step tutorial.

Similar Threads

  1. Car power supply (battery charger) from old pc supply
    By stimps in forum Power Supplies
    Replies: 10
    Last Post: 08-20-2010, 01:39 AM
  2. Hardware Review: M3-ATX Power Suply
    By Bimmerstyle in forum The Review Palace
    Replies: 8
    Last Post: 03-05-2008, 06:57 PM
  3. Power for my car computer?...
    By soupmoose in forum General Hardware Discussion
    Replies: 5
    Last Post: 08-10-2005, 02:58 PM
  4. Power problems with car computer :(
    By Bitflip in forum General Hardware Discussion
    Replies: 9
    Last Post: 04-26-2004, 04:13 PM
  5. How to power a dc-dc psu computer at home?
    By wysiwyg in forum Power Supplies
    Replies: 4
    Last Post: 02-21-2003, 12:04 PM


Posting Permissions

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