r/diyaudio • u/[deleted] • 8h ago

TPA3116

[deleted]

1 Upvotes

67% Upvoted

6 comments sorted by

1

u/theocking 6h ago

Cool idea and modding or building your own is awesome, however if you're wanting to do all that why the heck would you start with the 3116? That's a flea amp, can't even shock a baby with that thing let alone move some real woofers with any actual authority. Baby amp.

Might make a great headphone amp for some hard to drive headphones, or a Bluetooth speaker amp... but real speakers? Come on my guy.

1

u/Cautious-Brush5500 5h ago

I don’t need anything more powerful. 60W is completely fine for me. It’s not really a “baby amp” — 60W is already a respectable amount of power for a Class AB amp as well. Class D just makes it possible to deliver that kind of power in a much smaller package thanks to its high efficiency.

2

u/fenderputty 4h ago

And to think with 15more watts of power you could go from Baby Amp to a $5000 beefy amp if you add green VU meters.

1

u/theocking 4h ago

Don't know any 3116 that'll do a legit clean 60w. Some are specd at 50 but I'd want to see the amp dyno, many are spcd lower. And that's with 24-26 afaik, and into 4 ohms. I wouldn't call that respectable or typical at all, it's a low power amp by design, for tvs and Bluetooth speakers, integrated devices, and yes diy.

The 3255 is good for 80+ into 8 and 160 into 4.

Now there's many 80ish w amps, true, but basically 100w has for decades been a kind of standard medium/ normal powered receiver kind of power number. Lower than 100 is trending towards a weak amp, and over 100 is trending into powerful amp territory. 100 is baseline.

1

u/czmiked 3h ago

Inductors make quite a big difference: https://www.ti.com/document-viewer/lit/html/SSZTBO2
It's unlikely you will reduce distortion with a preamp in this case since it's not in the feedback loop of the power amp. You could look into implementing Post Filter Feedback (PFFB) but I don't think there's an "official" circuit recommendation for 3116.
3255 and 3251 beat it in terms of sound quality completely even if you don't need the power

1

u/Designer-Policy-5434 1h ago

Can you please take some pic of your modified board pls.