Pwr problem with my amps...not enough juice.

(kgoings) · (kgoings) **Join Date: Apr 2005** 07-02-2007, 9:39 AM

So both of my amps have started cutting out while we are out on the lake. They both flash the LED's and the manual for the amps say that means that they are not receiving enough power from the boat. What do I do to troubleshoot this? The amps are JBL Marine 4 Channel amps.

(mhayes) · (mhayes) **Join Date: Jul 2004** 07-02-2007, 10:30 AM

Maybe you should first fill us in on your electrical system (i.e. number of batteries, alternator output, etc.). Also, how many watts are your amps putting out and what class are they (A, A/B, D, etc.).

(acurtis_ttu) · (acurtis_ttu) **Join Date: May 2004** 07-02-2007, 10:35 AM

what guage wire are you running for power/ground? Haev you tested anything with a voltmeter?

(kgoings) · (kgoings) **Join Date: Apr 2005** 07-02-2007, 10:49 AM

I have not tested anyting wiht a volt meter. I belive the wiring wiring to the pwr is 8 gauge (I used the monster amp wiring kit)

I have 1 deep cell battery and the stock alternator. The amps (2 of them)push 145 RMS but I dont have the gain turned all the way 8up. And I have 4 speakers hooked up. Not sure what class but its the JBL MA6004.

(05mobiuslsv) · (05mobiuslsv) **Join Date: Apr 2006** 07-02-2007, 10:54 AM

Please clarify if this is happening when the boat is running or off?

(kgoings) · (kgoings) **Join Date: Apr 2005** 07-02-2007, 11:03 AM

while it is running...never had the problem while the boat is off.

(acurtis_ttu) · (acurtis_ttu) **Join Date: May 2004** 07-02-2007, 11:26 AM

test the voltage at the amp to validate the amp "mode" Your voltage woudl haev to eb really low to trip the amp...most will run down to 11.1-11.2...almost to where the battery is dead. Are the connections tight?

(kgoings) · (kgoings) **Join Date: Apr 2005** 07-02-2007, 1:06 PM

I have checked the connections and they are good. It trips in and out.

deltahoosier 07-02-2007, 3:42 PM

Is your altenator putting out 14.4volts when your engine is running? You may have a bad charging system.

(kgoings) · (kgoings) **Join Date: Apr 2005** 07-02-2007, 5:38 PM

not sure, I have to get ahold of a volt meter...the gauge says 14 and doesnt change.