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My JL Audio sub is dead. What exactly happened?

So at my wife's request, I hooked up a Roku to my main system. Roku is a device for internet streaming movies and tv. The connection between the Roku and my preamp, a Meridian G68, was a 12 foot optical cable.

The first night, I hook up the Roku and it works perfectly.

The next night, I move some cables around, then I hook up the Roku again, exactly the same way as the previous evening. I get picture but no sound. Weird. I pondering what I might have done wrong when out of the speakers... POP. POP! POP!!!

Uh oh.

I dive for the amps, switch them off. The POPs stop immediately. But...

Now there's a TERRIFYING HIGH PITCHED PULSATING NOISE coming from somewhere in the room. I finally realize it's coming from the sub, a JL Audio Fathom 113. I dart across the room, switch it off.

I stand frozen, savoring the final moments of the fantasy that maybe things aren't that bad.

Here are some questions in no particular order...

1. I suspect the amp in the sub is fried. Does that sound right?

2. Where did those POPs come from? Could a damaged optical cable do it? Or maybe the optical cable wasn't fully seated?

3. Do I really have to ship this 150 pound sub to Florida? Or do you think there's any chance of finding someone local to fix it? (I'm in L.A.) The sub is out of warranty, btw.

4. I tried to take the panel off the rear of the amp (I know, lethal voltages inside) with the thought that maybe I would just bring the amp portion of the sub to someone local to fix. I removed about 12 screws from the rear panel and still it doesn't budge. Why can't I open this thing?

If you have any suggestions, I'm all ears. If not, thanks for reading.

Bryon

P.S. The rest of the system appears to be fine.
bryoncunningham
Post removed 
polar993
6 posts
 
I am experiencing the same problems with one of my F113s.  I use the two in separate rooms with separate systems.

I’ve owned this particular one for about 7 years and it was starting to generate low rumbling/popping sounds about a year ago. The rumbling was not very loud but it was noticeable. I would shut off the sub and the next day power it back up and the problem would go away for about 3 months. 

Last night I noticed that the F113 wasn’t powered on. I checked the power cord and the outlet and they were fine. My F113 is now dead and won’t power on. 

I assume I may have the same problems with the caps that others are experiencing, but mine won’t turn on at all. 

I dont have the tine or the patience to open the sub up and try to implement the repairs myself and I am really interested in JL Audio’s deal for $300 to send the sub back to them for repairs. Can anyone shed more light on this?  What is the turnaround time?

Unfortunately I threw out both boxes for the subs a few years ago. They were taking up too much space and I have no plans to move, so I figured I wouldn’t need them anymore....ughh!  Does JL Audio sell boxes?  Do you think they can send me and empty box so I can pack up my sub and send it in for repair?  I’ve never dealt with their customer support, so any thoughts you can share on this would be appreciated. 

One more question....is there a replaceable fuse on the F113?  I would love it if there was a simple fix for my problem....though I think it’s wishful thinking!

Thanks for your help. 
peter_s
1,348 posts
 
@polar993   I sent my 113 in five weeks ago, and they said it would be a three week turnaround. Apparently they are short on parts and are waiting for the right parts to come in. I don’t know how long that will take. I didn’t want to open it up and do the repair myself either. Seems like a reasonable deal, although it is entirely their fault. They cannot upgrade to v2 because if uses different bracing internally. 
polar993
6 posts
 
Thanks peter_s. Hope you get yours back soon. 

Do you guys think I can purchase a box from JL Audio?  I no longer have my original box and it would be a total hassle and a small fortune to have a proper box made. 
btw22
80 posts
 
Polar993,

My f112 exhibited the same issues as yours. Bad caps and power supply, from what I’ve read from multiple forums.

A box from JL audio will cost you $82+shipping. According to them, you must use their supplied box for shipping the sub back. For $300 plus one-way shipping cost, your f113 will be upgraded to most current version of the f113v1.

I sent mine in for repair 2/20 and it’s finally due to come back later this week. Turnaround time was suppose to be 3 weeks but as peter_s noted, they were waiting for parts to come in. Mine also supposedly needed a new woofer so that took an extra 10 days.

TBH, I’m still a little miffed about the whole situation. I previously had my f112 serviced Dec 2012 and 5 yrs later it goes back again. I’ve also come across some saying that bad quality parts were used previously, though I’m not sure how accurate this is. My sub was never pushed close to its limit and now the new warranty is just for one year.

Good luck...

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