MTX JackHammer JH600 Car Audio Amplifier Logo

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Posted on Dec 22, 2010
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My MTX continues to draw power even when the key is not in the ignition. What can I do?

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  • Posted on Dec 22, 2010
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It sounds like you have constant 12volts applied to your remote turn on lead. The amplifier will have 3 connections for power:

1. 12volt constant
2. chassis ground
3. 12volt switched power - this wire should come directly from your head unit. It only sends 12 volts when the radio is on allowing to amp to power up only when the radio is on.

  • christoph33277 Dec 22, 2010

    I agree, I think the 12V is being constant, any suggestions or get it to stop being constant?

  • Anonymous Dec 22, 2010

    The 12volt constant connection is supposed to be constant. It has to be. The remote turn on lead is what switches the amps internal relay to allow power and ground to be connected through the amp. I think that the 12v switched is on a constant connection. As i stated, this connection should be from the remote turn on lead from the head unit which will switch the amp on ONLY when the radio is on

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