Question about Kenwood KAC-9152D Car Audio Amplifier

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Power on amp switch off when base is turned up

Hi ive got this kenwood kac 9152 1800 watts amp , when i have the amp turned up performing average to high base 30 secs later the amps powers off and about a min later it turns it self back on what may be causing this

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Re: power on amp switch off when base is turned up

Your problem is that the transistors on the circuit board are shorting out on the back panel of the case. is the amp connected to the sub box? its caused by the vibrations through the box and amp. take off the back cover and look for some scorch marks, if there is any, find the leads on the circuit board that are causing it and bend them down a bit. i had the same problem with my amp, and so have many other people. this fixed my Kenwood 9152D, and it has worked fine for many years after using this solution. if anyone has this problem and needs help with fixing it, email me at


Posted on Feb 13, 2009

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Re: power on amp switch off when base is turned up

A: make sure that speakers size and watts.B: Type of speakers is used for base. C: Make sure the current (Amps)of the battery and your amplifier. D: Check audio from source and decrease the level of base. Thanks.

Posted on Feb 09, 2007

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