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what causes the fuse from the battery to blow ?

Old 03-22-2006, 07:33 AM
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J.I
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what causes the fuse from the battery to blow ?

hey,
I was tuning my amp and as i played my subs loud, all of a sudden my amp shut off, then i realised that my fuse from the car battery blew, so i would like to know what causes the fuse to blow? is it my amp drawing too much current from the battery or what?

thanks
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Old 03-22-2006, 07:44 AM
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Originally Posted by J.I
hey,
I was tuning my amp and as i played my subs loud, all of a sudden my amp shut off, then i realised that my fuse from the car battery blew, so i would like to know what causes the fuse to blow? is it my amp drawing too much current from the battery or what?

thanks
Many things.

What you said, the amp begun to draw too much current, and exceeded the fuses rating; thats most likely the reason...

What's the rating of the fuse you had in there, and what's your setup look like? RMS of amp(s) and wire guage?, etc

regards, Mark
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Old 03-22-2006, 09:06 AM
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It could be just plain too much current, your fuse should be sized to protect the wire.
But there is something to watch out for. Was the car running and the battery fully charged?
Most new amps, especially high current, (1 or 2 ohm) particularly d class, will Draw much more current as the battery voltage gets lower. Like when you are doing setup or tuning.
If your amp does 1000w @ 12 volt it draws about 50 amp?
But if you battery goes down to 10 volt, to stay @ 1000w you now need 60 amps.
If your battery drops to 8 volt, to stay @ 1000w you now need about 75 amps.
Don't let your battery voltage drop. Don't even try to run a high power system without the car running. You can do major damage to amps and decks.
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Old 03-22-2006, 10:19 AM
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get your electrical looked at. obvioulsy it because the voltage went down......as stated above.....the current shot up...as stated above .... and kapoof.....it went.

did you not see dimming lights? you might need an alt and/or battery to keep the voltage up
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Old 03-22-2006, 04:09 PM
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What amp? and whats the size of fuse that u blew?
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Old 03-22-2006, 05:28 PM
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U guys are right... the amp is an audiobahn a8002t and it states that it can give 800watts at 4ohms and the fuse for the amp is 60 amp.
It is powering 2 12 pioneer subs which is 400 watts rms each. I dont think the amp is doing a good job at all, thats why im trying to find another amp like the jbl 1200.1 cuz i had a jbl bp300.1 back in the day and it was a solid amp unlike the audiobahn. and the audiobahn is a class d amp.
The car was running by the way. so what should i do to prevent this happening again???
thanks guys
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