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Power draw question?

Discussion in 'General Car Audio Discussions' started by The Hamburgular, Mar 28, 2011.

  1. The Hamburgular

    The Hamburgular New Member

    I'm looking at powering two 12" Kicker CVRs with a 900w rms amp @ 2 ohms in my car. I have a 117 amp alt and I'm wondering if that will cause any electrical problems? I've been looking around but I can't find anything on how to calculate the draw on your electrical system.
     
    The Hamburgular, Mar 28, 2011
    #1
  2. tommy2tone

    tommy2tone Full Member

    You should be fine,but if your lights dim when the bass hits,do the big 3.You can google search it and find out what it is.
     
    tommy2tone, Mar 28, 2011
    #2
  3. pedro quiroga

    pedro quiroga Well-Known Member

    do the big 3 anyways. if it dims you can add a batt in the rear.
     
    pedro quiroga, Mar 29, 2011
    #3
  4. The Hamburgular

    The Hamburgular New Member

    If I add another battery would I need to get a more powerful alternator?
     
    The Hamburgular, Mar 30, 2011
    #4
  5. pedro quiroga

    pedro quiroga Well-Known Member

    i currently have 2 batts in the back of my truck and the one under the hood on a stock 105 amp alt... big 3 too.

    the batt should be as close to the same under the hod as you can find.
     
    pedro quiroga, Mar 30, 2011
    #5
  6. The Hamburgular

    The Hamburgular New Member

    ok thanks for the help guys
     
    The Hamburgular, Apr 2, 2011
    #6
  7. steve

    steve Full Member

    Here is a simple way to determine average current draw on the electrical system(total rms continous watts x .50 / amplifier effeciency / cars voltage = average current draw on cars electrical system).this is intended for musical signals not tone generators.the reason for multipling by .50 is that .50 represents a musical signal driven to the point of distortion.for bass reproduction you may use (.60).if there is more than one amplifier used,simply combine the results of all amplifiers.
     
    steve, Apr 2, 2011
    #7