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JL Audio Ahead of the Curve

 
 
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Old 10-19-2021, 03:36 PM
Famester V1 Famester V1 is offline
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Join Date: Apr 2017
Location: Orlando
Posts: 244
Default F-113 v1 screaming!

I was playing (yes, I will admit it) Tom Tom Club's Wordy Rappinghood and Genius of Love (amazing instruments) when my F-113 fried. It began to make a loud screaming sound. I have a new (Used) set of Conrad Johnson LP260m-SE Mono tube amps which took the place of my Krell Mono FPB-450's. Amazing how much better tubes sound. Also ran all Transparent cables, of which I was able to do comparison tests versus other high end brands, Transparent wins out by a long shot.
I spoke to Randy at JL Audio tech support who stated it likely was a Final Output Transistor.
While I am in no condition to be liftin a 147 pound sub, and not even a 35 pound amplifier, between the sticky info here, my son and Randy's advise, I was able to remove the amplifier unit. I am driving down from Orlando to Weston tomorrow for some medical tests at Cleveland Clinic and will drop the amplifier section off at a nearby UPS Store to ship to JL Audio in Miramar. Unfortunately JL is still not receiving packages directly from individuals, due to their Covid-19 policies, all packages must be shipped in via UPS or Fed-Ex.
The only difference between the sticky and Randy's advice was the 6M bolts. He recommended using a HEX head bolt and not a pan head/Phillip's head. Using the hex head allows for a socket and ratchet to run the bolt in much easier than using a Phillip's. Also, do NOT use a power driver to run the bolts/screws in, must screw in by hand only.(Don't ask my why) There are 3 sets of cables with 3 ground connectors at each set of cables. They easily come apart. I did use a thin putty knife to help separate the unit, but it did booger up the edge between the amp and the box. This will easily be touched up as mine is a flat black. I would not recommend this on the gloss black. But the marks are in the rear of the unit and will never be seen.
They will refurbish the amplifier unit and return ship for $450.
They also have a program to replace the entire driver unit for an additional $550, but I am not sending that in right now.
Also the are doing upgrades from V1 to V2 just using the old box from the sub. I don't recall the cost, but it was a couple thousand or more.
Fred
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