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will to big a fuse cause damage?


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aggresivedriver 
Member - Posts: 13
Member spacespace
Joined: September 24, 2007
Location: Pennsylvania, United States
Posted: September 24, 2007 at 9:32 PM / IP Logged  
THIS IS MY QUESTION, THE SECOND PARAGRAPH CONTAINS MORE INFO IF YOU NEED IT: The amplifier ended up smokeing. Now im still trying to figure out what could have caused this. My question is i think i used to big a size of a fuse, i used a 60 amp fuse, because i figured the higher i go, the more safe itd be. Was i wrong? Is going with to big a size fuse bad? Please let me know, i dont want to make the same mistake twice!!
Okay, so today i did an install in my car, and nothing worked right, and ended up frying the amp. The whole night I was SURE something was faulty with the amp, and thats why the install didnt work correctly. I was installing two 12" cheap subs (those visionik kind) and a visionik amp. The power wire used was 10 gauge, which was the correct power wire size. I was running it off my stock headunit, so i found a switched 12v wire with my DMM and taped into that with the remote turn on wire, i grounded it good, and attached my power wire (with inline fuse) to the battery.
jmelton86 
Gold - Posts: 1,228
Gold spacespace
Joined: February 07, 2007
Location: South Carolina, United States
Posted: September 24, 2007 at 9:54 PM / IP Logged  

According to the12volt; https://www.the12volt.com/info/recwirsz.asp 10g can handle up to 60amps. I don't see that as your problem. Did you use a 60amp fuse in the power wire (next to the battery) or in the actual amp?

What kind of vehicle? Were you using the high-level inputs on the amp (tapped off of the rear speaker wires) or did you buy an LOC (line-out convertor) to get the input to the amp? How was the gain set? What is the impedance on each sub (in ohms)? What is the amp model #? Exactly how did you have the subs wired to the amp?

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stevdart 
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Joined: January 24, 2004
Location: Pennsylvania, United States
Posted: September 24, 2007 at 10:27 PM / IP Logged  
Visonik stikes again!
Build the box so that it performs well in the worst case scenario and, in return, it will reward you at all times.
audiocableguy 
Copper - Posts: 630
Copper spacespace
Joined: January 27, 2003
Location: Idaho, United States
Posted: September 24, 2007 at 10:33 PM / IP Logged  
"My question is i think i used to big a size of a fuse, i used a 60 amp fuse, because i figured the higher i go, the more safe itd be"
The fuse is to protect the Wire, not the amp. The amplifier should have it's own way of dealing with internal faults. Going larger on a fuse isn't the answer to 95% of problems. Usually is the cause.
You bought a cheap amp that will probably cost more to fix than it's worth.
duoproductionx 
Copper - Posts: 49
Copper spacespace
Joined: December 26, 2005
Location: United States
Posted: September 27, 2007 at 11:47 AM / IP Logged  
60 amp fuse on 10 gauge wth?? 25-30 tops...but yeah sounds like a bad amp.
97 Monte Carlo
CDA-9885, PZI Crunch 5 channel,12in MB Quart Premium.

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