amp issues

[tymans]

I just installed a HiFonics 1500d amp and a pair of Alpine Type R's, I was listening to the stereo for a good 20mins+ and the turned it up a notch and boom blew the main power fuse... so i got another fuse but turned the volume right down, had it pretty low and turned it on again and it blew another 80amp fuse.. its a 4awg kit and i cant figure out whats goin on?? I dont think it can be grounding because A) its a brand new kit so the wire is all intact b) all connections that touch metal are protected and it worked fine for awhile then gave me these problems?! i was wondering if anyone had any thoughts on this? mabey i need a bigger fuse? 100a? any help is greatly appreciated!

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[Moe Lester 10+ year member]

I believe that amp can pull close to 120A. How high are you cranking the volume?

 

[tymans]

i gave'r pretty hard, got a bit too excited wanted to see what she could do..

 

[MikeofTulsa Moderator]

the hifonics can put out around 1500w... which means it can draw a max of around 96a......im not sure if 4ga is such a good idea for that amp either....but u def. need a 100a fuse.....

 

[tymans]

why isnt 4awg isnt a good idea? are you saying i need to up it to 2awg?

 

[johnecon2001 5,000+ posts]

yeah go to 2awg and a bigger fuse. Try maybe a 120 amp. For the wire, your going to need an adapter to make 2 guage fit into the amp, cuz it only accepts 4 awg.

 

[MikeofTulsa Moderator]

well according to the chart located at http://www.the12volt.com/info/recwirsz.asp anything over 1000w and more than 8ft long should be 2ga or bigger.....u run the risk ofa fire if you run to small of a wire for the given current...

 

[BryanGsu 10+ year member]

He stated that he had the volume at a pretty low level and it still blew the fuse. A 80amp fuse is a pretty stout size fuse. Something could be wrong in the electrical system or amp.

Now i can understand if you were listening to it a high level and the fuse heated up and finally melted but at a low level with a new fuse does not seem right.