Amp goes on protection?

steven123654 · 28th August 2009, 08:29 PM

Hey, I own a Rockford Fosgate 350s amp and it goes on protection when there is a load. My circuitry look great. I have read that my output mosfets are burnt. Could it be something else?
Much thanks, steven123654

Perry Babin · 28th August 2009, 10:20 PM

Do you mean that it only goes into protection when you have speakers connected to it?

TO-3 · 29th August 2009, 06:49 AM

Quote:

Originally Posted by steven123654

Hey, I own a Rockford Fosgate 350s amp and it goes on protection when there is a load. My circuitry look great. I have read that my output mosfets are burnt. Could it be something else?
Much thanks, steven123654

As Perry asked, does you amp still go into protection when your speakers are not connected? If so, then it's probably your outputs, if not, could be a number of different things.

steven123654 · 2nd September 2009, 02:07 AM

Yes only when a speaker is connected to it but when not connected it doesn't go on protection.

Perry Babin · 2nd September 2009, 04:41 AM

What is the resistance across the speaker wires that were connected to the amp?

28th August 2009, 08:29 PM	#1
steven123654 diyAudio Member Join Date: Mar 2009	Amp goes on protection? Hey, I own a Rockford Fosgate 350s amp and it goes on protection when there is a load. My circuitry look great. I have read that my output mosfets are burnt. Could it be something else? Much thanks, steven123654

28th August 2009, 10:20 PM	#2
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	Do you mean that it only goes into protection when you have speakers connected to it? __________________ Links >> Basic Car Audio Amp Repair * Basic Car Audio Electronics * New Site * Basic Switching Power Supply Design * Basic Computer Skills << Links

2nd September 2009, 04:41 AM	#5
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	What is the resistance across the speaker wires that were connected to the amp? __________________ Links >> Basic Car Audio Amp Repair * Basic Car Audio Electronics * New Site * Basic Switching Power Supply Design * Basic Computer Skills << Links

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2nd September 2009, 02:07 AM	#4
steven123654 diyAudio Member Join Date: Mar 2009	Yes only when a speaker is connected to it but when not connected it doesn't go on protection.

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