JBL active speakers using LM3886

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Sorry for bumping an old thread, but I thought it would be better than starting a new one without all the info...

You can add Event TR8's to the list of thing that use LM3886's also. 🙂

One of mine stopped working recently, and after taking it to bits, I found the on/off switch had gone. I've ordered another switch but I have yet to fit it...

I was quite surprised when finding this thread to see the JBL was using 2 LM3886 chips to power the 5.25" driver, I'm guessing they're bridged? The TR8 only uses 1 LM3886 to power the woofer, and another for the tweeter... The heatsink is not that big either, the LM3886's are bolted to the backplate...

Now, Event claim this power going to the speakers are 50W for the woofer and 30W for the tweeter... This I can believe.

Now event to make a more high powered version of this monitor: The TR8 XL

It uses the same drivers but the amp has twice the power... I was wondering how hard it would be to upgrade the amp's in my existing TR8's?

If it's a lot of hassle then I'll probably leave them as they are, but if it's just a case of upgrading the trafo and adding 2 more LM3886's and heatsinking them somehow then I might get soldering! :smash:

I've only starting reading up on gainclones and LM3886's after finding the LM3886's, so I'm not really sure how they work with using more than 1 chip per chan. I've made a few Tripath amps before now, so I understand the basics at least. 🙂
 
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