Very cheap eBay TPA3116D2 amp review and gain fix (only $5!!) 

Thank you very much for the excellent review. Changed the gain on a mono board from previously 36db to 20db which significantly reduced loudspeaker hiss.

I was wondering of the quality of this board, since it's so cheap and your review was exactly what i wanted. Thanks a lot!

Very valuable information! Thank you. The only thing I never feel sure about these boards is the power requirements. The listings never say how many amps should the supply be.

On some of these current model TDA amplifier boards, they have added dip switches so there's no longer a need to remove and add resistors, just flip the little dip switches to change the gain. Super handy!

Hello Adrian - from soggy England. I also like these little amps, so much so I ordered aother. Your gain fix turned this little beast into the good TPA amp AND the cheapest. Only problem is my second one came with an unstuck heat sink like yours. I can't see any damage to the chip intself and one of the grey caps has been soldered (or is that sodderd) cock eyed. I have sent a photo off to the seller. Regardless of the outcome I shall try and salvage this amp. I don't like glued heat sinks. I'm moving the 2 large caps to the opposite side of the board and rigging up a bigger heat sink. If it all works your gain mod will be done. Thanks so much - great channel. Regards.

Great review man, just ordered one as an attempt to convert a passive speaker cabinet (homemade) to an active one. For $5 you cannot go wrong really.

I have a TPA3116D2 2.1 powering my entire house speakers. They have been used for almost a year. I bought them off eBay for $12. That is how good and worth it these chips are.

I think I have 2 of these red ones. I wasn't smart enough to figure out how to set the gain, but as I recall I did swap out the volume pot for a 10K one which cut the background noise considerably.

I bought some of the USB powered amps that take an SD card, great little amp for small 5 watt speakers, they are well worth £2.26

Thank you Adrian for the nice and details review. I am about to get one of this. I can see that you have a few sheets of the board fact sheet and diagram. Are you able to tell me if they are downloadable please? Thank you.

Great review, and great fix explanation. Understandable and doable for almost everyone. One question though, is there a 3 ways (2.1) version of these little boards ?

It says that the chip produces 50w at 21v, TPA3116D2 2x50. The others say that watts drop, because it's other model chips listed TPA3118D2 2x30, TPA3130D2 2x15W, Notice models differ. So if you don't get 50w, either board design is limited, your power delivery is lacking, or it's weaker chip. On the graph side datasheet it shows pretty steady clipping point just above 50w on 24v into 8ohms.

4:02 That is TPA3118 rating. TPA3116 can output well over 50W per channel @24V if you have good enough heatsink.

Thank you for an informative video. I bought the TPA3116 D2. It feeds back with loud echo at very low volume. Any simple ideas are welcome. Running 13.5 volt dc to very old but good 8ohm 20w Sansui speakers. has a voltage range of 5-27. Would higher voltage eliminate such feedback?

I have one for a mono sub and the volume knob is super sensitive.. to the point where i can only turn it up maybe a 16th of a turn before it gets too loud and clips.. pushing a type e 10 damn good.. hits at 30hz.. likes 35…

Nice video ! I'm a fan of printing shit out too - nothing beats paper ! Does it have any turn on thump to it ? Ordered two this summer and both had it ... Also the 2 ones I had had a huge idle current draw .. do you remember how yours performed ? Thanks

Watch out with the XH-M189 boards. Mine was faulty by design. Yes, there's an error in the pcb design. If you follow the datasheet example and look at the negative left input, it should be connected with a ceramic cap to signal ground just like the right channel is with c4.. It isn't, they messed it up so now the decoupling cap for the gaindivider is connected to signal ground, which isn't boardground but floating. the cap that should do that is c2 which is switched in the design. There should be a via from that to pins 6&7 and c5 should go from signalground to pin11, left in negative. It can be fixed but it's too much work for a $5 board. Get the blue one, it's way better.

What connectors did you use to go from the power source to the green screw-press style connector on the board? Could a standard 12-24V round plug be soldered in place of the existing connector on the board? Apologies as I don't know all the proper terminology yet as I'm definitely not in my area of expertise haha, but I do enjoy learning so any help is a plus! Thanks

This is pretty awesome. Will this type of amp also work with a car stereo? I am looking for something cheap that can help me to balance audio better in my car

This amp is pretty good but be aware that this has an audible buzz if you don't use a clean power source. I am just running from a 12v 2amp router power supply and it runs great for my computer desktop speakers but like I said with a very very small audible buzz that isn't so bad.

thanks for the infos, i just wanted to know if there any hiss/buzz noise from this amp ?

From what I read, the noise is due to grounding issues (amp ground putting noise on the input ground, bleeding trough to the actual audio), wouldn't it be better to fix the grounding issue somehow rather then gimping the gain?

I guess you soldered the better volume knob of the broken board onto the new board

If you use PCM-generated audio from an Arduino, they recommend to add components to make a filter, to make the audio more sinus-like in order to protect the speakers, "unless the amplifier has one". Does this amplifier? Sorry for the beginner question.

Adrian Black what did you do with the board that lost it's chip?? I was wondering what it would do with a real TI chip on it !!

What are the two large capacitors for? Also you mentioned the 4 very small capacitors are for the input. They look like small resistors. They make capacitors look like that as well? Best regards.

replace R1 with the 5.1k and.... remove R2? i got a 3Watt resistor, i wonder if that would work just as well.

the datasheet specifies the use of 220uF capacitors for decoupling, would it be worth it to replace those 1000uF one's with audio grade panasonic 220uF one's ?

what would be the difference between the 5.1k resistor and 5.6k ? I'm wondering 'cause i don't have a 5.6k either and maybe it's better to add a 470ohm in series to match the datasheet ?

Good day I just wanted to ask what is the lowest impedance it can handle I would like to know because what I have is one sub 100 watts 8 ohms and will add two 90 watts 4 ohms connected in parallel, I hope someone can answer if what I am doing will be just fine. Thanks in advance

I have been looking at various of these chinese micro amps, and they are obviously made to be used with some cheap power adapter (or maybe even a battery of some kind if its only for very small speakers). What I really wanted to do with one of these were to put it into an existing passive speaker, but instead of using a power adapter, build my own power supply that can deliver enough power to get maximum out of it, eg a 20-30v transformer that can deliver enough current and mount it all inside the speaker and only have a Line input, and a 230v power connector. Is there anywhere to find some easy schematics to make your own regulated power suply (instead of just going out and buy a 24v laptop adapter) as they usually tend to be a bit more expensive if you need something that can deliver about 50w, and I already have trafos laying around salvaged from old electronics, and its more fun to actually build it yourself.

Can you suggest a good amplifier to go with a 12.6v battery pack? Making a Bluetooth speaker, drivers are 4ohm 10-20w(max)

Hi, I want to connect the audio input to that white input thing. What are the cables called so I can connect to a 3.5 mm.

What was that movie that David Bowie was in? For some reason this ending of this video reminded me of the scene where there was the characters "Helping Hands" . she's also the girl that was in Dark City

Is there a way to get power off this board (after the potentiometer) to send to a bluetooth receiver so the bluetooth is not always on?

my review exactly. i love how simple and bare bones these things are. But i wanted to increase the sensitivity of the volume knob, since most phones don't put out a strong enough signal. (unless i hookup the headphone jack of my stereo receiver to get its true power, which is impressive) Do you happen to know the rating on the potentiometer on this? EDIT: ok so..... you basically removed the little R2... and solder in a 5.1K resistor?

But.... what if i use that 3-pin JST connector instead of the headphone jack? will the Resistor change be the same?

please help me. some how right channel of my amplifier is not working. how to test the problem. by the way i checked capacitors and resisters, nothing is short or burned.

I beg you do not you know how to advise me for that amplifier TPA3116 resonates? after feedback is turned on in the loudspeaker thank you

Where is the link in the description for this!!

just subbed to your channel nice review

I tried to reduce the gain from 26db to 20db on my board, but it didn’t work. After I desoldered the 100k resistor, I measure 20kOhm to 70kOhm (don’t know why I get different values) over the pads that’s supposed to be open circuit. When I try it, it sounds like the board reset ever second or so with the speakers clipping. After resoldering the resistors back I get the same behavior. I tried it with two boards and I cannot understand why the oHm values are wrong. Any ideas?

What voltage do I need for 6Ω 45W speakers? Is it a bad idea?

merhaba aynı ürünü aldım ama hoparlörlerde cızırtı geliyo aux girişini takınca daha çok geliyo sizce sebebi nedir

can I power it from USB? It says 5- 24V input... Or can I use a boost converter in front of it... How many Amps does it draw?

Hey, your "TPA3116D2 2.1 Amplifier Test" video is not available....!!!

I've replaced the resistor, opened r2 and now the speaker signal is cutting in and out. Have you got any clue why?

can i use this amp with a tv to speaker

It connect 24 3amp adapter?

Mine has sound cutting. Do you know how to solve it?

Hi what kind of power supply do you use with it? (amp) thanks

That would be great as a kit.

Yo are you good at wiring up amplifiers like what you are showing in this video?

Want to build an auxillary speaker cabinet with a 12 inch Jensen guitar speaker and using 'this board amp to power it, in mono mconfiguration, running off two 12..6 volt 7ah batteries (inside speaker cabinet) for portability, to slave off my Fender Champ 40w , which also has one of these TDA chip power amps. So, if at 24volts, its 20w +20w...can it produced 40w in mono operation? How do you configure it for mono operation? for 8 ohm operation? What kind of 3 pin plug does it use..is it a molex?]

plz help at full gain it mute the audio on bass beat .same board with 19v laptop power supply. whts the problem?

What's the frequency response can you tell us? Thank you.

What is that female 3 pins connection ??

There is a humming sound on my "TPA3116" 2.1 when plugged in. Why is that. Humming sound stops completely when i remove the audio jack.

Good Morning. I connected an amplifier board (TPA3116D2) and an mp3 decoder to the same 12vcc source and there is a noise in the loudspeaker. If the decoder and the amplifier board are connected to separate sources, the noise will disappear. Do you know what you could do to connect them both to the same source without having the noise? Thank you.

does it have pop sound, some tpa3116 board from china have horrible pop sound. Does this board having this problem?

i had this one, but I gonna pair it with 80W woofer and 100W tweeter, i'm not gonna use it at full power tbh, i got a same issue with you, the noise floor pretty high, when i turn up the volume to 50%, the noise goes up, but when i turn the volume to max, the noise floor goes down, can you help me

What about the characteristics of the input signal to be connected to audio in? What about the max voltage?

can i drive 4 ohm spekers with it if i put a resistor or something on the speaker to increase ohm?

Link for this?

On this audio amplifier, you immediately need to replace the 1000 mF capacitors with 4700 ones

The board has 10mh inductors .Doesn't 8 ohm speaker require 15mh or 22mh inductors.

Well So If I Connect a Car battery it Will Give me About 10W Outpot ?

I have the xh-m190, same board but with 2 of the amplifier chips. I don´t know what kind of power supply i ´m going to need to drive this. Whats the amp draw on your chip?

good video lately i'm interested in to cheap mini amps searching for low voltage like 5v 10v amp for portable bluetooth speaker project it's hard to chose from big select witch is the best performance can you recomend something?

Where did u get that female dc piece?

Have you found a way to eliminate the "Bump" when the power is switched on? thank you for this excellent demonstration on changing the gain on this amp.

what power supply i need to play 3 amps together with one crossover?

5$ ? where is the link ?

Thanks

Can this be used as a headphone/microphone amp for a PC?

The PAM8610 has a lot better sound in my opinion, and it is louder,voltage supply is only 12V[TPA3116 -20V].

So, with the resistor-fix, the board can go louder, right?

Will it work fine for 4 ohm speakers ?

This guy speaks perfect English

What's that board/cutting thingy you have on your desk called?

With respect, the 'D' in Class D does not mean or refer to 'Digital'. The classification 'D' refers to fact that the amplifying devices in the circuit operate as electronic switches, and not as linear gain devices as in other amplifiers. There are no digital electronics involved whatsoever.

Hi, what power supply did you use?

A very good review really. I am waiting for this TPA3116D2 amplifier working in mono mode: www.ebay.com/itm/401184532883 hoping it could drive Sony SS-WS500 3 Ohm 100W passive subwoofer from Sony HCD-S800 surround system. The amplifier input would be connected to the subwoofer output of Yamaha HTR-6130 Dolby decoder. The subwoofer ouput is declared as 4V/1.2 kOhm and I wonder if I will be able to attenuate the input with the trimmer marked as 'Volume control'. That is - I am not sure if this trimmer attentuates the signal before entering into the amplifier and I believe 4 V would be way to much. The next thing I am not sure is if heatsink will be able to handle the heat disipation at 22V (90W, 10% THD+N @3Ohm according to the TPA3116D2 datasheet). THD is not of a big concern because the subwoofer output already has 10% THD. BTW, how did you mount the LED strip connector (terminal connector to 2.1x5.5 mm) back-to-back to the PCB's terminal connectors?

I'm super confused when you reference R1 and R2. You removed R3 and R4. Trying to installing a pot for gain adjustment on mine.

Great video . . but class 'D' does not mean 'Digital'. This is a common error. There is no digital circuitry or digital conversion involved. The audio signal IS converted into a pulse train but this is not digital in any sense.

That’s not a TPA3116d2. I believe, Thats an HT315 chip🤔

imma combine this with a bluetooth receiver and see what happends !!!

lol ;D Latin script is not "English characters".

I would change those Cheng x caps, they are one of the worst caps you can find, I have seen those died a lot.

here in Brazil there are a lot of these "chong" capacitors unfortunately

Zapraszam na odsłuch TPA3116D2 2X100W Bumbox DIY ;) ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-Ea0rMW2Q5iA.html

yo... it dont fuckin work! i did it just like you said, held the Resistor with tweezers and it took. popped off the R2, but absolutely nothing comes out now!!! >:c i got a busted Amp now! is this one of those bullshit pranks? LOL? really?!