why are the fuses blowing?
Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=32726
Printed Date: July 14, 2025 at 9:46 AM
Topic: why are the fuses blowing?
Posted By: eclipsnracn
Subject: why are the fuses blowing?
Date Posted: May 25, 2004 at 4:09 PM
I hooked up one T9512-44 with a 1501.1 fosgate, i played it for a while and then, like 10 mins later, the fuse blew, I put a second one and again. question is, do i need a higher amp? i had a 50A. or what do you guys think it could be wrong? thanks for your help
Replies:
Posted By: forbidden
Date Posted: May 25, 2004 at 4:34 PM
Back up the bus, you are running a Rockford 1501BD on a 50 amp fuse. If this is the case the fuse size you have chosen is waaaaaaay to small. A fuse size of 140 amps minimum is more along the lines of what should be used. This amp if it is the one I think it is, is a monster amplifier that has a big appetite for current, what size power / ground wires are used? Where is the ground run to, what kind of car is it in?
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Top Secret, I can tell you but then my wife will kill me.
Posted By: eclipsnracn
Date Posted: May 25, 2004 at 4:40 PM
its on a mitsubishi eclipse, my plans right now is to have two amps (1501's) and two MTX 9512-44. ground/power wires are 4ga. should i use two 140A fuses or what do you recommend?
Posted By: forbidden
Date Posted: May 25, 2004 at 5:21 PM
Where is the ground wire run to? Have you upgraded all the factory ground / power wires from the alternator to the battery and battery to chassis yet? A 4 gaugs on that amp is almost a little too small for most cases. However in yours if you do not have a HO alternator then your hopes of using two of these amps properly is a long shot. An amp cannot make power unless it is given power. One fuse at the amp and another that is one the main power line within 18" of the battery is pretty much a must. The first fuse at the amp is for the amp, the second fuse is to protect the wire from a short circuit.
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Top Secret, I can tell you but then my wife will kill me.
Posted By: eclipsnracn
Date Posted: May 25, 2004 at 6:25 PM
actually, no, i haven't upgraded non of the alternator wires, i wanted to upgrade my alternator,but i have no idea on how or what to buy, damn seems like i have a whole lot to learn! the ground is about 12" from the two 1 farrat caps that i have, and its grounded right on the nut where the seat belts are. appretiate your help man!
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