help with my amp

[akiatticus 10+ year member]

i have a viper 1200w amp hooked up to 2 12" alpine type r and it worked fine for a 2 days untill i changed a song and the subs went out... i looked at the fuses on the amp... 3x 30 fuses... and they were burnt out.. i checked the ground and moved it just incase i checked the amp under the hood and it was fine i put new fuses in started it the amp blinked on protection and then blinked power then shorted them all out again i think maybe something interal in the amp might be messed up? but i have no idea why it is doin that i dont really know anything about amps so all the help would be greatly appriceated

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[mike dressure 10+ year member]

what size fuse do you have under the hood?

 

[akiatticus 10+ year member]

100watt it is in a 96 suburban if that helps at all

 

[mike dressure 10+ year member]

100 amp fuse? what size wire?

 

[akiatticus 10+ year member]

4gauge rockford amp kit

 

[mike dressure 10+ year member]

also what is your sub vc configuration?

 

[mike dressure 10+ year member]

ok so it isnt the wire, or fuse size!

 

[akiatticus 10+ year member]

i am sorry but i have no idea what that means

 

[mike dressure 10+ year member]

what is the the sub's voice coil configuration dual 4 ohm or dual 2 ohm? how are they wired

 

[akiatticus 10+ year member]

i bought them from a friend and i dont know but i can find out tomorrow.. but i think that it is 4ohm but once again not sure

 

[mike dressure 10+ year member]

well find out what the final ohm load is that the amp is reading! if it is to low it could be the issue!

 

[akiatticus 10+ year member]

is there a way to know how it is wired to figure out how many ohms it is just by looking at it?

 

[mike dressure 10+ year member]

well if the sub is wired positive to positive and negative to negative on the woofer then it would be a 2 ohm load, if the driver is a dual 4 ohm vc

 

[hazardous0388 10+ year member]

ok heres a good explaination. The fuse by the battery on the power cable is to protect against surges so to speak or shorts in the wire. if it happens USUALLY that fuse will pop and youll check your wires, fix it, and then put a new fuse in, but u want the fuse USUSALLY to be how many fuses in ur amp, ur case 3, times the amperage on those fuses, so 3x30, to equal the size fuse in the holder on the power cable up by the battery. so go buy a new fuse, fuses for your amp SAME SIZE FUSES THOUGH, and recheck your wires, make sure your ground is SECURED and the power cable and ground cables are PLUGGED IN right on the amp. my friend blew all his fuse by plugging in the power to ground and ground to battery. dumbass he is.

 

[mike dressure 10+ year member]

ok heres a good explaination. The fuse by the battery on the power cable is to protect against surges so to speak or shorts in the wire. if it happens USUALLY that fuse will pop and youll check your wires, fix it, and then put a new fuse in, but u want the fuse USUSALLY to be how many fuses in ur amp, ur case 3, times the amperage on those fuses, so 3x30, to equal the size fuse in the holder on the power cable up by the battery. so go buy a new fuse, fuses for your amp SAME SIZE FUSES THOUGH, and recheck your wires, make sure your ground is SECURED and the power cable and ground cables are PLUGGED IN right on the amp. my friend blew all his fuse by plugging in the power to ground and ground to battery. dumbass he is.

what you just explained would be for another situation but in this case it wouldnt help him! his fuse and wire size are correct, he said it did fine for 2 day's then boom nothing! so im thinking he either has to low of an ohm load for the amp to handle, or he has a faulty amp.......also im wondering if the electrical cant handle the amp and is dropping to dangerously low level's in which will cause the issue's that have occured to occur