I have a Rockford-Fosgate T-1000bd and earlier today i was playing my friends sub on my amp fine and then i took his out and put mine back in. After I did this the amp is staying in protect mode.

The light turns on (blue power) and whenever a bass note hits the protect light will come on in unison with the bass and no sound is produced. I am positive I have my BL wired down to 1 ohm.

Any suggestions? more information you need? heeeeeeelp

Stock electrical btw on a 2005 grand prix gt.

Perhaps the voltage is dropping too low. Turn the gain down a good bit and try again. Measure the voltage and report back to us.

Did you change anything (anything!) about the wiring of your sub from before?

Sounds like a low impedance/short circuit protect condition.

Does it do this at low volume levels? If so, it has nothing to do with input DC lvoltage evel....

Check your wiring. I bet the sub wired too low.

Today when I got in the car the protext light doesn't even come on anymore, its just the normal power light. The light doesn't even turn on when the bass hits. So now I'm extremely confused because there's still no sound.

The protect light would only come on when the bass hit regardless of the gain setting. Can't report voltages for a couple of days. Don't have the DMM.

You have a loose wire or a coil that may be rubbing/shorting...

this is what you should do.

1. Grab a DMM

2. Measure your voltage at your alt

3. measure voltage at front batter

4. measure at your rear battery (if you have one)

5. Measure at the amplifier it's self.

could be a slightly burnt fuse, bad ground, etc.

Fixed it

Took out my sub and re-wired it and it worked. Funny part is that i rewired it exactly the same way. Damn technology.

Fixed it

Damn technology.

????

Fixed it

Took out my sub and re-wired it and it worked. Funny part is that i rewired it exactly the same way. Damn technology.

Bet ya $1 it wasn't the same way.

All the Fosgate amps I have ever owned would not wire lower than rated impedance without shutting off and I have owned a bunch.

For future reference, it's not always good practice to force an amp into protect mode again and again and again and again. The protection circuit exist, but usually can only take so much strain before they malfunction and then you have a real problem on your hands. This is what I've experienced at least.

Fixed it

Took out my sub and re-wired it and it worked. Funny part is that i rewired it exactly the same way. Damn technology.

Bet ya $1 it wasn't the same way.

All the Fosgate amps I have ever owned would not wire lower than rated impedance without shutting off and I have owned a bunch.

Yeah their protection functions are pretty iffy, I wired ~600w fosgate amp and it would run on .5 at very low volumes but as soon as you turned it up it would shut off.

I've seen some pretty bad issues with the protection in general, IIRC if your amp gets extremely hot a lot it could ruin the temperature sensor and so it would contentiously shoot into protect. But this was sometime ago and I don't recall all of the details.