TPA3116D2 Amp

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#5,101
Pascal GUERIN said:
Hi,

I've just done the OSCON mod, changing the six input caps for Panasonic SEPF 330uF 25v OSCON's on my Sure board.
Thank you very much xrk971 for suggesting this mod !

Even with using the poor power supply from my TV box the sound is VERY VERY good !!
It has inproved soundstage, the high section quality and the whole dynamic.

I coudn't connect another psu because i had no terminals left to connect the laptop PSU 19V/4.68 A (Dell model)
Click to expand...

Glad that worked out for you. Did you change all 6 caps to OSCON's'? I wonder of simply two would work as well? I got the OSCON tip from Rhing so can't take credit for it.
 
#5,102
matt_garman said:
Did you happen to take a pic of your bootstrap snubber mod on the Ybdz? If not, could you maybe give some verbal hints how to pull this off? It doesn't appear to be possible on the bottom of the board, but maybe I'm missing something?

Also, last night I received my Edcor transformers, and I was thinking about trying it out on the Ybdz board. But the transformers have balanced output, and I'm not 100% certain how to wire the balanced inputs.

Of course it's obvious where the + input of each channel goes, but... Looking at the board with the outputs on the right-hand side, and the inputs on the top: on the left hand edge of the board, middle group of SMD components (includes gain-setting resistors), looks like the top horizontally-oriented cap (in the group) is the one that bridges the negative side of one of the inputs (LIN- or RIN-) to ground. Does that sound right to you? If I've ID'ed the one negative input correctly, it means I've ID'ed the other one correctly as well.

Assuming I'm right, does that mean I have to solder a teeny tiny wire for - to one side of that cap solder pad, and another teeny tiny wire for GND to the other end of the tiny pad? And not accidentally short between the pads? Is there any reasonable way to give myself some more working room?
Click to expand...

My photo of the snubber mod is above ChrisMmm's post. It is tricky but not too bad if you have soldered SMT stuff before.

Regarding the balanced inputs - I agree with ChrisMmm that you should remove the existing caps on the negative side and then solder a tiny wire (wire wrap wire is good for this sort of precision "wire bonding" exercise. However on the positive side I would just solder a small jumper across both ends of the input caps near the plastic connector jack. Whatever you do you will need a way to provide strain relief for the little wires bonded to the tiny solder pad that is connected to the trace leading to the negative input on the chip.

Good luck. Which Edcor transformer did you get?
 
#5,103
I picked up a couple of these little guys, changed the power caps to OSCONs on one board and compared it to the stock board. The difference was quite noticeable. The mids and highs on the stock board was rather shrill. With the oscon caps it smoothed out and settled down very nicely.
I would say they sound better than a stock yj red board. I haven't compared them to the blue/black board yet.
 

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#5,104
Nice work there Prezden - that is the Ybdz Wiener board and what I currently use for my main active bi-amp setup. Great that you did the mod on only one for a comparo. If you have time try the bootstrap snubber mod - it will make this amp about as good as it can get sans the input transformers. I never bothered to upgrade the inductors on this board because they don't get even slightly warm and it sounds good as is.
 
#5,107
xrk971 said:
Nice work there Prezden - that is the Ybdz Wiener board and what I currently use for my main active bi-amp setup. Great that you did the mod on only one for a comparo. If you have time try the bootstrap snubber mod - it will make this amp about as good as it can get sans the input transformers. I never bothered to upgrade the inductors on this board because they don't get even slightly warm and it sounds good as is.
Click to expand...

First 5 months you didn't want to replace even the Chinese electrolytics and used the board completely stock, didn't believe it could be better. 😉
 
#5,108
Finished this up tonight.
Oscons
TDK bootstrap caps
Jantzen z cap 4.7uF Input cap
Wima 4.7uF (-) input cap
Bourns 2100 inductors
Hammond 1455T case
Running from a Dell brick

I have got to say that I am a believer in this chip...it sounded good completely stock but now it sounds like I spent some serious money on a diy affair. Most expensive thing was the case!!! All in for about $75
Now I want 2 more to try pbtl mode!!! It would be great if TI would do an ever higher power version...
[/I]
IMG_20140926_205450.jpg

[B][url]
[IMG]https://lh4.googleusercontent.com/-XtEsEGa6fgA/VCYQNAlSrKI/AAAAAAAABj8/TlYlAMvxkI4/w721-h541-no/IMG_20140926_211715.jpg
 
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#5,109
First Test;


An externally hosted image should be here but it was not working when we last tested it.


1000uf caps replaced with Silmic 330uf, 1uf input caps replaced with Erse 4.7 PulseX. Removed input socket, wired signal wires directly to caps. Running with TDK-Lambda 24V SMPS, adjusted to 17V. Soldered crap volume pot for testing.

TPA3116 wired directly to Philips AD4000M full range drivers, no xover.

No turn on-off pop.

An externally hosted image should be here but it was not working when we last tested it.


I need a case now 😉
 
#5,113
Hi All,
I just had a breeze audio TPA3116D2 2.1 amplifier arrive in the post. I was very excited to set it all up last night but unfortunately it doesn't seem to work or at least I can't get any sound out of it 🙁

When I first plugged in my 19v laptop power supply to the rear (which itself was already plugged into the mains - perhaps a mistake) there was a slight spark from the rear power inlet and I haven't been able to get any sound from it since.

The power light comes on when there is power and when I turn the volume up higher I do get some minor hiss through the speakers which suggests to me at least that the amplifier section is working but maybe something is wrong with the input? Does anyone more knowledgeable than me have an idea what this could be or how to test?

Thanks.
 
#5,114
irribeo said:
First 5 months you didn't want to replace even the Chinese electrolytics and used the board completely stock, didn't believe it could be better. 😉
Click to expand...

Lol. Yeah I guess maybe if I wasn't so lazy to pull off the stock inductors I could swap with nice Bourns or Coilcrafts. If I do anything with solder it will be to build the new DUG PBTL's.
 
#5,116
big russ said:
Hi All,
I just had a breeze audio TPA3116D2 2.1 amplifier arrive in the post. I was very excited to set it all up last night but unfortunately it doesn't seem to work or at least I can't get any sound out of it 🙁

When I first plugged in my 19v laptop power supply to the rear (which itself was already plugged into the mains - perhaps a mistake) there was a slight spark from the rear power inlet and I haven't been able to get any sound from it since.

The power light comes on when there is power and when I turn the volume up higher I do get some minor hiss through the speakers which suggests to me at least that the amplifier section is working but maybe something is wrong with the input? Does anyone more knowledgeable than me have an idea what this could be or how to test?

Thanks.
Click to expand...

These units are notorious for falling apart during shipping as the heavy inductors are not stabilized. They sway back and forth and break off one of the bootstrap caps. Check your bootstrap caps and replace as needed. In any event file a complaint if you ordered on Aliexpress that it is DOA. They will refund you and let you keep the unit.
 
#5,117
cjkpkg said:
Finished this up tonight.
Oscons
TDK bootstrap caps
Jantzen z cap 4.7uF Input cap
Wima 4.7uF (-) input cap
Bourns 2100 inductors
Hammond 1455T case
Running from a Dell brick

I have got to say that I am a believer in this chip...it sounded good completely stock but now it sounds like I spent some serious money on a diy affair. Most expensive thing was the case!!! All in for about $75
Now I want 2 more to try pbtl mode!!! It would be great if TI would do an ever higher power version...
[/I]
IMG_20140926_205450.jpg

[B][url]
[IMG]https://lh4.googleusercontent.com/-XtEsEGa6fgA/VCYQNAlSrKI/AAAAAAAABj8/TlYlAMvxkI4/w721-h541-no/IMG_20140926_211715.jpg
Click to expand...

Nice work there. Glad it worked out. Looks like it is sitting on top of a big class A room heater. Does the 3116 sound as good as your class A amp?
 
#5,119
xrk971 said:
Nice work there. Glad it worked out. Looks like it is sitting on top of a big class A room heater. Does the 3116 sound as good as your class A amp?
Click to expand...
Funny there are actually 2 there stacked....on the bottom is a Moskido, the TPA is sitting on a DestroyerX Blame Super A. While the TPA can't drive to the extent the larger class A and A/B amps do it really can keep up....which surprised the hell out of me.

What is impressive is the warmness of the sound from the TPA..I don't want to start a flame war but it has a lot of similarity to a SE tube output...in a good way.

I am going to partake in a pair of DUGs boards and do a PBTL amp which should improve upon what I have so far with my 4ohm bookshelf's.
 
#5,120
xrk971 said:
You went all in on the Ybdz now with inductors and input trafo! Must sound amazing. I need to order a couple more Ybdz's to play with.
Which transformers are you using and do they make the huge difference that everyone says?
Nice work. :cheers:
Click to expand...
Thanks, it does sound nice. I think I posted something a while ago about the setup, although it might have been when I was still using an Audiobah board. I'm using Sowter 3575 wound with OCC wire. The transformers are the output stage of my DAC and the input stage of the amp as well. Removing the input caps made a huge difference. DAC is Buffalo 2 kitted out with Paul Hynes regulators & firmware volume control. I still have not got around to trying the bootstrap snubber mod though. I need to get around to that soon. 🙄
 
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