I have to admit... That looks like something from 'Back to the Future'. Kinda of a super-charged turbo amp! 🙂
Don't you have EMI problems with that many antennas ? The stock board already has EMI problems. I tamed it with ferrite cores around the cabling.
What antennae, the inductors? I've never had EMI issues with my 3116 boards short of very slight buzzing if input cap leads were really long. We'll see what happens when I fire this one up.
I love this amp so much, I made a portable mini horn speaker for my wife (office desk).
itunes card is just for size comparison.
itunes card is just for size comparison.
An externally hosted image should be here but it was not working when we last tested it.
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That's a great lookling litte box jfresh! Do you have any specs on the box, ie frequency response and such. Which of the TPA3116s did you use?
Hi all, I'm really sorry I'd like to apologize for wrong posting, I'm using TPA3110, is there some way to delete the post?
Not super relevant, they're almost identical anyway with the 3116 having a bit more power is all. Don't think you can delete or even edit after 15 minutes or so.
The output inductor leads and unshielded body are transmitting (and a bit of receiving) antennae and the input cap leads are receiving (and a bit of transmitting) antennae ... especially at these high "digital" frequencies.
And you wouldn't necessarily (or typically) hear anything obvious like "buzzing", high audio freqs or "screeching" if you did have EMI EMC RFI issues--you'd have osc, ringing, brief instabilities, etc ... way past the audio bands in the kHz and MHz ... This is 'scope territory and that's why it's hard to DIY.
... remember this is more of a "digital" device (large current switching at 100s of kHz) rather than a usual preamp, amp etc ...
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The EMI issue is unfortunate for those whose enjoyment of these amps are affected by it. Perhaps this is why they have not penetrated the retail market.
At any rate this newly modded amp sounds excellent. Best build yet. Clean and clear as spring water, and not even broken in yet. All that's left at this point is to try out an Astron power supply, but otherwise I'm happy and ready to move on to other things.
At any rate this newly modded amp sounds excellent. Best build yet. Clean and clear as spring water, and not even broken in yet. All that's left at this point is to try out an Astron power supply, but otherwise I'm happy and ready to move on to other things.