Print Page | Close Window

subs cut off red light on amp

Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=111099
Printed Date: May 16, 2024 at 11:13 AM


Topic: subs cut off red light on amp

Posted By: sauce101
Subject: subs cut off red light on amp
Date Posted: January 29, 2009 at 5:06 AM

Hi All

I'm running a Startsound 1200W pmpo 4ch amp and 2x 12" Starsound DVS 1500W each on the Starsound amp. I have had the setup for 1 year now without problems. Now all of a sudden when I go over a uneven piece of road that causes the car to slightly bump the subs cut off and the green power light on the amp goes from green to red. If I turn the radio off and then back on it usually turns the subs back on and the red light on the amp turns green again. Other times when I turn the radio off then on after the subs cut out they still remain off and the light on the amp is still red. Sometimes the subs will only start working the next day until i go over a small bump that is.

Does anyone know what could be causing this?




Replies:

Posted By: i am an idiot
Date Posted: January 29, 2009 at 5:38 AM

A loose connection where you grounded the amp to the vehicle.  Or a bad solder joint on the circuit board of the amplifier.  Or a speaker wire is touching ground or another speaker wire.  Check all your wires, especially if they are under your box.  Try hitting on the amp itself to see if you can make it cut off or start playing.





Posted By: sauce101
Date Posted: February 02, 2009 at 6:36 AM

Checked the ground wire and it's screwed on tite and no wires touching eachother. When the amp cuts out I tried hitting it to see if it may turn back on but no luck.

I did notice however when the amp cuts out the led light goes red, Now if I turn the radio off and back on the light goes green and if there is a beat/bass it will cut off straight away, If there is no beat and just a melody the amp will stay on but as soon as the beat/bass kicks in the amp cuts out again with the red led. The only way It will start working again is if I leave the radio off for a while then after a couple times of turning it on it will work again.

Could it be a bad solder joint?





Posted By: i am an idiot
Date Posted: February 02, 2009 at 9:18 AM
Since it appears the amp will not come out of protect without removing remote power, you will have to try this.  With the amp playing at a moderate volume, hit on it and see if it will cut out.  Do you have a volt meter?




Posted By: soundnsecurity
Date Posted: February 02, 2009 at 11:22 AM
try unhooking the subs and see if it still goes into protect, also check your speaker for shorts

-------------




Posted By: dawggboy
Date Posted: February 02, 2009 at 12:20 PM
not a professional but i had an earthquake amp thatused to do this at random and i had to take the amp apart and re-solder the ground and power connections inside. i had my brother do it at his vo tech as he is in electronics and his teacher helped him didnt cost me a dime. apparently with the heat in the amp and the bass pounding it worked these connections lose.




Posted By: sauce101
Date Posted: February 03, 2009 at 12:30 AM

ok will try hitting the amp at moderate volume this afternoon and will post what happens.

Yes I do have a volt meter





Posted By: i am an idiot
Date Posted: February 03, 2009 at 3:48 AM
With the amp playing at a level just below shuttong off, check the voltage at the terminals of the amp. Black lead on ground terminal of the amp. Red lead to power terminal of the amp.





Print Page | Close Window