TPA3116D2 Amp

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#8,181
Seriously? I remember postings where you claimed that fake Chinese parts are better than authentic parts from a distributors like mouser/digikey.

claim it was documented years ago no differences were found between chinese "made in japan" capacitors and japanese ones
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No one ever said this?

Nonetheless there have been real measurements about distortion in coupling caps long time ago. Which showed that the mast majority of improvements you can find here by changing coupling caps is simply nonsense.
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That's something totally different and especially not limited to your /Chinese/Japan claim.
 
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#8,182
Post about chinese components on chinese ampboards you own, don't ridicule people replacing chinese components for authentic good components if they share there really is a huge difference. Post it makes no sense to replace the coupling capacitors on your 360customs tpa ampboard, don't keep saying you know something about chinese ampboards you never heard or measured.
 
#8,183
Seriously? I remember postings where you claimed that fake Chinese parts are better than authentic parts from a distributors like mouser/digikey.

Anyway, I'd never seen any in-deep measurements of you regarding Chinese or General part performance.

I got several Chinese boards (amp boards, DC/DC etc.) on my workbench and they work/measured like expected within the range they are specified. (If they don't, they were implemented suboptimal) And yes, I'd measured them and published the results.

We also compared cheap Chinese amp boards (TA2024 in particular) against other implementations and they performed like intended.

I also copied some I infos over to here:

http://www.diyaudio.com/forums/class-d/276982-tpa3251d2-42.html#post4473456

Where there is a discussion about MLCC in the signal audio path.
 
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#8,184
I told you from own experience that the crossed vent chinese "Panasonics" bought from Aswo DE sound better on all tpa3116 ampboards I had them on, compared to Panasonic FM/FR from digikey/mouser, but yes the ASWO parts explode when you put rated voltage on them 🙂
 
#8,186
The german sourced parts had same numbers and letters printed on the foil yes.
I didn't buy them, I got them with copies of reports and contracts that were deleted/ended, production of some telecom equipment was moved from Germany to China after this, these chinese "panasonics" helped firing Germans and hiring Chinese, nice paradox.
 
#8,188
You read and summerized correctly.

Now why do Panasonic FM/FR (digikey/mouser) on tpa ampboard from 470uF and larger, 220uF has less of this effect, why do they add sibillance to recorded vocals, why do they attenuate and reduce detail cymbals. Less important/annoying for me, why do they produce warmer coloured bass. Why do they do this while Chemicon/Rubycon/Nichicon/Elna also with similar value/size/datasheet don't, not just on tpa ampboard btw, you'll read about it in dac-threads too. I would psychologically feel better seeing an explaination.
 
#8,191
Hello. I have finished reading through all this huge topic because I have been advised that the TPA3116 might be the best or one of the best class d amps now available. The fact that is also cheap doesnt hurt also.

There are a few implementations I have seen on Aliexpress that were not presented here. I can see why, in my little knowledge, they seem to lack output filter, but still, what are your opinions on them?

TPA3116D2 2.0 CH Class D 50W+50W High Power Stereo Digital Amplifier Board 50W*2-in Amplifier from Consumer Electronics on Aliexpress.com | Alibaba Group

mini amplifier tpa3116d2 100w 2.0 stereo dual channel high power digital amplifier board-in Amplifier from Consumer Electronics on Aliexpress.com | Alibaba Group

I am curious as I would like a small amp but with some tone controls. If they are not ok, I will probably settle for this one, with or without separate tone controls:
TPA3116D2 Class D Digital Amplifier Board 2x50W Dual Channe Stereo 12v 24V car-in Amplifier from Consumer Electronics on Aliexpress.com | Alibaba Group

It will be in use with a MarkAudio CHR-70a pair. Thanks
 
#8,194
I use the TPA3132D2 filter less without any issues (It's basically a 3116 in a different package). I don't see any quality issues (with the parts I used) nor does it affects the sound if the speakers provide enough inductance. If you are planning to run small speakers or just tweeters with it, there might be some thermal issues as the drivers gets heated up due to the HF. I can't speak for the boards shown at AliExpress. They might be okay or they are from the same "quality" as the other Chinese boards around.

The ferrites on the first link look a bit small, I use 1206 Murata parts here, they fit the needs even for "high power". Those in the second link looks a bit bigger footprint. At moderate levels the system should work good, those 220uF caps "might" be a bit undersized if you go for high levels and <=4R load resistance.

I'd give the second one a try. 🙂

(Update options are the ferrites and the bulk caps, but only if needed for high SPL)

Regards.
 
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#8,195
doctormord said:
If 220uF gives less of this effect, first hint would be size/ESR/ESL/impedance. Have you verified it in a blind test? I mean, would you say, you can pick out the board equipped with Panasonics, compared to others blindly?
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I think I mentioned lower esr/impedance chemicon/rubycon/nichicon or solids don't have same effect. Same can dia , smaller and larger cans, altered smd decoupling also no effect on FM/FR's.
Blind in recognisable without knowing which is on ampboard (on cymbal playback), yes. But sometimes one can't tell blind a $100 minispeaker from a Quad ESL63 with Gradiënt dipole OB subwoofers. Then not everything else was equal, blind we didn't know🙂
 
#8,200
Only best connectors on Wiener🙂
Sellingprice for the tonecontrol & opamp 3116 filterless board including profit is $7, maybe beads are chosen just looking at price, or layout isn't as good as your layout or both 🙂 YJblue disrupted DAB, YJdeluxe (toroids) FM, filterless but also beadless Sure3110 is mean to wireless devices but also Ipods and cdplayers are victims🙂
 
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