JL Audio F113 --- Loud Buzz --- ??? --- Bizzarre

Thanks Elizabeth, I was hoping for something not as bad. Oh well, I still have one to enjoy while the other is getting repaired. I also noticed that we must have a power dispution / surge. These units were plugged directly into the wall. Should I be using a surge protector between the sub and the wall outlet? Luckily both didn't get damaged ...

The same thing happened to my F113. Lightning struck very near our home and the sub started squealing immediately. It was plugged directly into the wall as well. I had to send it back to FL for repair. They suggested a SurgeX suppressor/conditioner.

Both my fathom f113 subs were severely damaged after
a power failure/surge. JL Audio needed to replace the
amplifiers and wiring. As JL Audio suggested I'm now
using Surg-x surge protection units with each sub.
JL Audio honored the warranty but the repair took almost
a month. Good Luck!

If you had a surge, I agree with Elizabeth- you probably fried one of the modules in the Class D internal amplifier. I had a lightning strike near my home last spring and it cooked a Rowland Class D amp that was run via a surge protector. The best thing to do in a storm is UNPLUG! Don't bank on a surge protector. Good luck packing up that F113. That thing weighs close to 100 pounds. My F112 came with a fault in the ARO LED, but I said to hell with it- it works, I don't need the green light to go on to tell me it works, and I'm not packing that beast up unless it flat out fails completely.

What model Surg-X did they recommend?