I keep blowing fuses!

There is your answer.  Gain control is not something to be "messed with," it is to be set properly to match the output from your head unit and left alone.

Hello all.  I also have a JBL BP1200.1 Amplifier, and when I had my Infinity Perfect 12.1d's wired in parallel which would present a near 1 ohm load to the amplifier and I tried to play it at unreasonable volumes the amp would go into protection for only a second then start playing again when I lowered the volume.  I determined that it was the 30 amp fuse in the dist. block, and an 80 amp fuse solved my problem.  I now have a solid non fused dist. block and a 250 amp ANL fuse at the battery.

- My point is I thought the bp1200.1 was NOT 1 ohm stable, maybe some are.  When I gave mine a 2 ohm load visa vie SVC mode on a DVC 12.1d it absolutely rocked,  and toasted the 12.1d in 3 months.

- My question is how could you push this amp to that level where its blowing fuses, and still listen to it?

- I think if its blowing fuses it might be broken, the legacy amp I used to have started blowing fuses.  I replaced them once, and the second time that amp smoked out worse than me.  Legacy is crap, I upgraded to Hifonics. 

- I heard if you replace the fuse with one of half the strength and it still blows at low volumes there maybe problems, DO NOT replace the fuse with a stronger one.

Thats all I have for now.

i reset set my gain back to the place it was before, and the problem went away, but i wont know for sure until tomorrow because i still will need to drive around like i do for a FEW hours playing my music at full blast. Now i know all about gains and everything so i wasnt surprised but the main thing is last night, not the fuses but the amp bass would come on then a second later shut off so i  popped the trunk and saw the amp was going into protection for 1 second then playing then protection on and off for a minute before i took the fuse out of the distrubuiton box to shut the amp off. THAT is my main concern  because i FIGUREED messing with the gain is what started my fuses to blow. So what do you think this is? Remember i drove my car for over 3 hours before the amp starting going into protection  will and it was hot at all and the subs are wired down to 1 ohm load.  I'm gonna get back to this topic late tomorrow night after i have more testing done by driving around so i can come back and explain. Funny thing is i have never had these problems before, so im thinking maybe the amp is getting ready to go to the amp graveyard

You statd that you are running 2 4ohm dvc subs. I asume the you have them wire to 1ohm at the amp?.

I am pretty sure that amp is not 1 ohm stable and maybe the reason that you are having these problems.

CHris

i fixed the problem, it was the gain, when i messed with the gain everything started messing up, and since i turned it back to where i had first set it, everything has been fine. So all along it was the wrong gain setting.