Protect light on.. i cannot get it to work - diyAudio
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Old 26th June 2007, 06:29 PM   #1
diyAudio Member
Join Date: Jun 2007
Default Protect light on.. i cannot get it to work

Ok, so I am so sick of this problem I am almost vomiting so i need some help pretty bad. I bought this 300 watt spl amplifier. It is a XL2-300. I have tried everything. I bought a fosgate 10 AWG power kit for it and i hooked it all up perfectly and it just gives me a 5 second protect light and then it turns the light off. When only the remote wire is attached the red protection light stays on constantly. I then grinded metal where the ground was on the chassis down and got it as clean as possible,as well i cleaned the positive terminal, i also restripped the wires, and still the same result. I went out and bought 8 AWG power and ground wire for the amp from circuit city, and still the same. I have tried a different battery, different remote wire, connecting and unconnecting the speaker wires and rca's. I finally took it to circuit city and they tested it and said it turned green and was fine. I cannot figure out why it wont work in my car but it will work in their shop. Does anyone have any ideas?
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Old 27th June 2007, 04:04 AM   #2
diyAudio Member
Join Date: Nov 2003
Location: Louisiana
Does it have the same symptoms when no speaker and no RCAs are connected?

You need to confirm that you have adequate voltage at the terminals of the amplifier when the amp is on (or supposed to be on). Set your multimeter to DC volts. Black lead on the ground terminal of the amp. Red lead on the remote and B+ terminals of the amp (not at the same time). You should read approximately 12v when the head unit is on (so the remote terminal will have 12v on it). If the B+ or the remote voltage is below ~11 volts, you need to determine why (assuming that your battery voltage is above 11v).
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