American legacy subwoofer not working - Car Audio & Video

It is only stable to 4 ohm mono(which is 400 watts RMS or a bit less not the max rating of 800 watts which is a PMPO rating).

Your Sub would have to be wired in series(8 ohm final load, if you wire it in parallel 2 ohm-you will fry that amp).

Can't really find anything about them but maybe if you contact Legacy and beg a little they might have a circuit diagram hiding away somewhere. Here:Legacy

yes, should be fine in series or parallel. it will run hotter under lower ohms but crank out more volume!

25 to 30 amp fuses will work great, anything lower could possibly blow a fuse when a good bass note hits even if there is nothing wrong with the amp. Hope this helps.

check you signal going to the amp and rca;;s

My amp stays in protect mode i don't know whats wrong Any suggestions

your only choice is to run the amplifier at a 4 ohm mono load - this will not reult in the amplifier making much power.
Positive on sub to Positive on amp.
Negative on sub to Negative on amp.
This is your only possibility.

Adding a second sub in the same fashion will result in a 2 ohm load, and your amplifier will run at its rated potential.

Thanks for using FixYa - a FixYa rating is appreciated for taking the time to answer your FREE question.

did you try to switch channels with the subs and see if it is the channel on the amp. if it works then its the sub and it will need replaced

I would check the RCA preamp wires connecting the stereo to the amp. If these are loose or broken, it could cause you to lose your sound.

Does the amp show signs of life, such as clicking on, an LED turns on, or anything like that?

Has anything else changed between the time it worked and didn't work?

what is the rms and ohms fro the amp and what type of subs and how many