Question about JBL ESC-300 Speaker

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JBL esc333 sub not working

Hi, since my 3 yr old dropped a toy into the port and I removed it by taking the back off the sub no longer works. I noticed a couple of broken capacitors which I replaced but the problem is still there. as I live in the UK, can someone advise me of the best course of action. The system sounds great and am reluctant to bin it yet (cost of fixing it to buying another).
Thanks Ilyas

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Well, I have recently inherited one from a family member, but this one came with the same issue. I simply drilled a small hole into the metal grating, completely bypassing the circuit boards inside. I reconnected a piece of fresh speaker wire to the sub, and had that plugged into my receiver. Now, not only can I boost my sub, I can also control its volume.(It didn't come with the remote either!)

Posted on Jun 30, 2010

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How much you willing to pay for the parts

Posted on Mar 10, 2010

  • jason16876 Mar 10, 2010

    how much are you willing to pay for infared sensor ive got one here


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My esc333 packed up soon after I bought it (2nd hand on ebay). No original speaker connectors came with mine so I had to hack into said connectors and solder some cables straight onto the PCB, all was OK for a couple of days then no joy, although it appeared to power up.

After a while I decided to strip the whole thing apart. I simply undid every connection and put it back together again (I'd suspected a dodgy connection). After this back in business.

My only gripe is that I received no external infrared receiver with mine. So some of the advanced adjustments, which you can only make with the remote I can't do. If you are thinking of scrapping yours I'd be interested in buying that off you?


Posted on Feb 14, 2009

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Posted on Jan 02, 2017

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