I keep blowing up amp fuses
09-12-2008, 06:16 AM
#1
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I keep blowing up amp fuses
I have a old *** (well not that old like 2003 old) 800w Kenwood amp powering 2 12"s in my trunk. The amp takes 2 30w fuses but I keep blowing them 
So I got some 40w and they tend to last longer than the 30w ones 
Should I use 2 50w fuses? think they would last longer?
Please help
So I got some 40w and they tend to last longer than the 30w ones Should I use 2 50w fuses? think they would last longer?
Please help
09-12-2008, 10:47 AM
#4
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Never use fuses larger then the amp is rated for. EVER. Figure out why you are blowing them. you have a short, or maybe your speakers are the wrong impedance? do you have bass boost way up?
Lots of things can be done to fix this, but putting in bigger fuses is not one of them. Putting in larger fuses is just a very good way of starting a fire.
Lots of things can be done to fix this, but putting in bigger fuses is not one of them. Putting in larger fuses is just a very good way of starting a fire.
09-12-2008, 10:56 AM
#5
Never use fuses larger then the amp is rated for. EVER. Figure out why you are blowing them. you have a short, or maybe your speakers are the wrong impedance? do you have bass boost way up?
Lots of things can be done to fix this, but putting in bigger fuses is not one of them. Putting in larger fuses is just a very good way of starting a fire.
Lots of things can be done to fix this, but putting in bigger fuses is not one of them. Putting in larger fuses is just a very good way of starting a fire.
09-12-2008, 10:58 AM
#6
Administrator
iTrader: (7)
x1000 to what Socket said.
time to start taking readings on all your wires and check your connections. Tedious work but worth it in the long run.
time to start taking readings on all your wires and check your connections. Tedious work but worth it in the long run.
09-12-2008, 07:34 PM
#9
If a 20amp circuit breaker tripped in your house, would you just replace it with a 200 amp breaker? NEVER increase the fuse rating when you're blowing them. You're completely defeating the entire reason they are there.
Disconnect EVERYTHING from the amp. Replace the fuses with the correct size. Turn the gain on min. Connect the ground wire. Connect the battery wire. Use a small piece of wire to jumper the battery terminal to the remote turn on. Does the amp power up without blowing the fuses? If not, your amp is toast. If they do, reconnect the remote turn on from the headunit. Try again. If that continues to work properly, hook one item up to it at a time until you have a problem. If you get the RCAs and speakers connected and playing without blowing fuses, THEN you can slowly turn up the gain to the proper setting.
Disconnect EVERYTHING from the amp. Replace the fuses with the correct size. Turn the gain on min. Connect the ground wire. Connect the battery wire. Use a small piece of wire to jumper the battery terminal to the remote turn on. Does the amp power up without blowing the fuses? If not, your amp is toast. If they do, reconnect the remote turn on from the headunit. Try again. If that continues to work properly, hook one item up to it at a time until you have a problem. If you get the RCAs and speakers connected and playing without blowing fuses, THEN you can slowly turn up the gain to the proper setting.
09-13-2008, 03:23 PM
#11
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i wonder if you just have the ground and battery backwards...ive seen this done...such a simple thought but easily overlooked...also do the math if you dont know what the stock fuses are..voltage x amps = watts plug in the numbers...but be careful most amps are rated wrong
Last edited by alexanderiv99; 09-13-2008 at 03:26 PM.
09-14-2008, 01:19 PM
#13
Deals on wheels
Actually I had the same problem with my alpine PDX 1.1000 amp and an alpine type X 12 - turns out I didn't have any subsonic filtering turned on and messed up the Sub- and the subs messed impedance kept blowing all my fuses - when i finially burned up that sub enough and had to replace it with 2 alpine type R 10"s on the same amp with the same fuses.. hasn't happened again in almost 2 years no matter how hard I am on my 10"s -
Long story short. I bet it's your subs and not your amp
Long story short. I bet it's your subs and not your amp
09-20-2008, 02:05 AM
#15
Deals on wheels
09-20-2008, 11:59 AM
#16
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Actually I had the same problem with my alpine PDX 1.1000 amp and an alpine type X 12 - turns out I didn't have any subsonic filtering turned on and messed up the Sub- and the subs messed impedance kept blowing all my fuses - when i finially burned up that sub enough and had to replace it with 2 alpine type R 10"s on the same amp with the same fuses.. hasn't happened again in almost 2 years no matter how hard I am on my 10"s -
Long story short. I bet it's your subs and not your amp
Long story short. I bet it's your subs and not your amp
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