fuse poping

[wnorcross114]

i have 2 15" solobarics with a ma audio 401sx model amp will run at 1/2 ohm so i have my speakers wired into a half ohm. my problem is i set my gain (turn gain down put radio a third of its max volume and turn gain up untill a little distortion and tweak it back down) my volume on this is 18 well when i play it at 18 for 10-15 minutes i end up destroying the fuse. i dont know if i need a thicker wire because the system is looking for more power, or the glass fuses **** please advise. other than that i can listen to my radio at 15,16 for hours and no problems. i am going to try putting a circuit breaker there instead any other ideas please let me know thanks

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[MyFartsStink 10+ year member]

Wire them higher than a half ohm. That may be your problem.

 

[MyFartsStink 10+ year member]

What is the ohms rating on the subs?

 

[wnorcross114]

they are dual 2 ohm subs they sound great just popping fuses. i am running 4 gauge wire i dont know if that could be my issue

 

[DB_DRAG_SPL 10+ year member]

1. What size power/ground are you running, if you are trying to run @ .5 ohm w/ anything less than 0 ga, you are retarded.

2. What size fuse do you have in said connection?

3. What modifications have you done to the electrical system of your car?

 

[wnorcross114]

the problem is the subs do i believe 1200 rms if i wire the subs in 2 ohm this amp only does 650 rms

 

[wnorcross114]

im running 4 gauge wire. i figured i should go zero. ther are 3 40 amp fuses in amp so i have 100 amp glass fuses at battery only. and no upgrades to elect. system

 

[DB_DRAG_SPL 10+ year member]

the problem is the subs do i believe 1200 rms if i wire the subs in 2 ohm this amp only does 650 rms

No the problem is that you're trying to draw enough current through 4 ga wire to run at .5 ohm....

And your fuses are trying to tell you this.

 

[wnorcross114]

so if i change to zero gauge i should be fine and stop blowing fuses

 

[DB_DRAG_SPL 10+ year member]

im running 4 gauge wire. i figured i should go zero. ther are 3 40 amp fuses in amp so i have 100 amp glass fuses at battery only. and no upgrades to elect. system

You need to quit attempting to run that amp at .5ohm, at least until you have the supporting mods to support it.

It is people like you that lost .5 ohm warranty coverage for the rest of us

 

[DB_DRAG_SPL 10+ year member]

so if i change to zero gauge i should be fine and stop blowing fuses

No, you will fry your amp next... once the voltage drops into the low 10's it's going away. You need AT LEAST, the big 3, an extra battery, 0 ga to even attempt to run at .5ohm, that's not taking into account the size of your alt.

 

[wnorcross114]

relax guy i just do it for fun not profeesional that is why im asking about it. im trying to figure out the problem. if you want to help then help

 

[DB_DRAG_SPL 10+ year member]

relax guy i just do it for fun not profeesional that is why im asking about it. im trying to figure out the problem. if you want to help then help

And i'm telling you exactly what is wrong and how to fix it....

NEVER NEVER NEVER attempt to run at .5 ohm on a STOCK electrical system, it can not feed enough current to your amplifier to keep it operating and it WILL fail.

 

[rockmo 10+ year member]

And i'm telling you exactly what is wrong and how to fix it....

NEVER NEVER NEVER attempt to run at .5 ohm on a STOCK electrical system, it can not feed enough current to your amplifier to keep it operating and it WILL fail.

X2^

 

[dman4486 5,000+ posts]

I lol'd at this thread....

.5ohm--> buy a new amp

no power upgrades, 100AMP fuse--> D.A.

the fuse at the battery is to protect the line, not the amp

go 1/0 and 250A