Amp blowing fuse

[Brans Freestyle]

ok heres the deal: i just put in 2 sony xs-1236 12" subs running from a crunch p2225 amp. everything was working fine the first day, but now today i keep blowing the #20 fuse. its a 7.5 fuse and it keeps going out. i replaced it the first time and everything worked, but after about 3 hours it blew, i put another 7.5 in and it instantly blew, i then but a 10 in and that blew. wtf is going on, should i just keep putting higher amp ones in, or could i fry my hu

 

[88vert]

I would recheck all your connections

Dont put a higher amp fuse in,you could fry your amp or wiring

 

[Heath]

If the amp is new take it back... Something is wrong... When I put my JBL in it automatically blew all three 40 AMP fuses, I took it in for service and they replaced basically everything on the inside...

 

[WoodysX]

Before you return, do you have the subs wired correctly? Are they wired to the right ohms? If your amp is only 4ohm stable and you have it wired to 2ohms, that could be a problem...

Look @ the instructions, how are they suppose to be wired, meaing lowest ohms?

The sonys (xs-1236) are single 4ohms, and two can be wired into 2 or 8ohms like this

or this

So if your amp is not 2ohm stable, that could be the reason your amps blowing fuses. Wiring the subs into 8ohms will give you less power, but will stop the blowing of fuses.

 

[Heath]

Sorry, I guess I just assume that people wire them right... Stupid me...

 

[Cartman]

He's asking about the #20 fuse and says it is 7.5 amp, that can't be the amps fuse so isn't the problem with the HU not the amp?

 

[ipozestu]

I think that Woodys got it right on you need to make sure that the subs are wired for the correct Ohm load or "PoP PoP FiZZ FiZZ oh What a PITA it is" LOL

 

[Brans Freestyle]

my amp is 2ohm stable, and its running 4ohms to each speaker. i have the 12v remote turn on wire from the amp, connect to the 12v ignition wire that goes to my hu. whenever the remote wire is connected, it will blow the #20 fuse and the radio wont turn on. if i take off the remote wire, everything works fine. tomorrow im going to hook a switch up to the amp instead of tapping into the wiring and see if i can diagnose the problem some more.

 

[Explorer94GV]

I had the same problem my radio wouldnt come on either. Same symptoms it kept blowing fuse second you put it in. Now my explorer is a 94 so it may be different. My fuse controled the radio and interior lighting. You may have a short somewhere in the lighting. What you can do is just hook up a straight wire from the headunit to the fuse #20 to get the radio to work. Hope thats not the problem since its a pita to find. In your case it may be different. Also check the fuse box holder and see if any wires are touching down there. Hopefully yours is a easy fix

 

[boominXplorer]

What this seems to me is for a head unit and an amp remote to be running off of a 7.5 amp fuse is crazy. Because most head units alone pull more amps than that. If you trust yourself you could run a new remote wire to your ignition and just put a small inline fuse on it like a 15 amp fuse. Then run that to the head unit AND amp. There could just be a short in the stock wire. Thats just my 2 cents worth

 

[Brans Freestyle]

i tried all yesterday trying to find out what was causing the problem, checking all the wiring everywhere and couldnt figure it out. i ended up just running a switch from the remote lead to the front, and then back to the amp + so i just flip the switch to turn the amp on. im still trying to figure it out though .. but at least it works

 

[VairKing]

I would guess that your HU + your amp turn on + all your interior lights was just too much of a load for that circuit. Thats why it kept blowing the fuse. If you wanted to still use that spot to get power, just wire in a relay. Good Luck!