Question about JBL GTO 75.4II Multi-Channel Amp Car Audio Amplifier

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My setup on jbl 75.4 was working fine for over a year until i got in the car this morning and nothing out of the sub ive checked all the connections and all is fine. i noticed the power and protect leds are flashing. whats wrong??

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  • 2 Answers

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Posted on Jan 02, 2017

  • 3 Answers

SOURCE: Amps Power and Protect LEDs Both on But No Sound

its fried

Posted on Mar 07, 2009

etirbynnor
  • 655 Answers

SOURCE: JBL GTO 301.1ii protect mode

Hello roets81,

Check the voltage at the amp. It's possible that the voltage is either too high (above 16V) or too low (below 8.5V). Also make sure that the amp case is not grounded. If these check out OK, the most likely cause is that the amp itself is defective and requires service.

Hope this helps.

Posted on May 27, 2009

  • 149 Answers

SOURCE: JBL amp, worked fine untill 2 days ago. protection light on..

might have roasted your speakers voice coils a little which may be sending the amp into protect mode throw a speaker on it that you know works and if it doesnt trigger the protect circuit then you probably have a blown or almost sub.

Posted on Jan 16, 2010

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.A thumbs up would be greatly appreciated if this answer is helpful to you.

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