DIY external cooling fan to amplifier-how to?

Discussion in 'Do-It-Yourself Garage' started by jeremy, Aug 30, 2009.

  1. jeremy

    jeremy Senior Member
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    Dear all,

    i have a 4 channel amp. main problem is the built in fan isn't working anymore.. the amp heats up till like really hot during operation.

    my idea is to DIY a fan mounted on the amp.(there's a small rectangular opening enough for air to enter or exit).

    i have a 12V PC cooling fan.. i tried sourcing power from RCa cable input and then ground the other wire, but the fan not moving..

    Any sifu please advice on where i can tap the power from? and of course the fan has to turn on together with the amp.

    any advice most appreciated.:wavey:
     
  2. idnawse

    idnawse Senior Member
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    try use this

    [​IMG]
     
  3. jeremy

    jeremy Senior Member
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    my gawd, what are those 86,87,85,83? and where can i find those?
     
  4. idnawse

    idnawse Senior Member
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    that one relay la bro .. normally they use it for additional spotlite, horn etc
     
  5. jeremy

    jeremy Senior Member
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    oic..will go buy relay and connect as mentioned.thanks
     
  6. dieheartsue

    dieheartsue Senior Member
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    U can try tapping the positive terminal onto the amp positive (+) incoming power and the negative to the boday or any negative(-) source.. usually it works on all of my electronics installation inside my car...


    .....dieheartsue....
     
  7. idnawse

    idnawse Senior Member
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    so the fan will on until ur battery flat? what i know, the +ve terminal at amp is direct current from battery. :hmmmm:
     
  8. dieheartsue

    dieheartsue Senior Member
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    yes.. but nowadays new connection is the amp power they tap through the radio power cable by adding in relay.. coz old fashion (battery tap in) the amp will never off.. if branded amp shud b ok.. if cap ayam brand not practicable.. u can oso tap to those postive (+) terminal which is connected to ur ignition switch.. u can try testing it by using the car power tester by touching the terminal and switch on your car key.. if when u switch off the ignition but still lighting which mean it does not pass by the ignition..


    ...dieheartsue...
     
  9. idnawse

    idnawse Senior Member
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    yup.. use from ACC switch is more suitable. need to long wire of coz la.
     
  10. minikar

    minikar Senior Member
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    Wire the ON/OFF for relay from "Remote" should works for most amplifier... oh fan :)
     
    #10 minikar, Sep 5, 2009
    Last edited: Sep 5, 2009
  11. jeremy

    jeremy Senior Member
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    tried tapping direct from amp input and another wire grounded.. but fan not working
     
  12. minikar

    minikar Senior Member
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    The "input", you mean the wire "(+) from battery" or "from head unit"?
     
  13. jeremy

    jeremy Senior Member
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    i tapped from (+) battery to amp.
     
  14. minikar

    minikar Senior Member
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    Try substitute the fan with a 12V bulb, could be ur polarity or fan prob. Not likely scenario...
     
  15. edwin_lcw

    edwin_lcw Senior Member
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    sourcing power like indawse show was the most precise idea coz the fan will run when the amp is turned on (that also depend how u install the amp:rolleyes:)
    hahaha u can see the numbers on the relay hahahaha
     

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