Hi there!
This is my first post.
I hope I'm in the right sub-forum here 😉
I was big fan of Lepai LP-2020 (Tripath TA2020), but now I've bought an quite massive 20yrs old HiFi 7 speaker audio system (2x 120W front, 2x 60W surround, 1x 80W center, 2x 100W bass, all have 4ohms) and the tiny amp doesn't have enough power to get a decent volume, except for the surround speakers, but I have to make the amp quite loud and I'm getting some strong distortion there.
So I'm looking since a few weeks for a good and more powerful but still cheap Class D amp... when I will find one I like I will buy one for 2 speakers each and make in 5.1 channel system out of it (using an DTS decoder).
First I've tried the fully assambled TPA3116D2 module for 22€ from Eb*y, as it looked good and was cheap, and anything was ready to use, but now it arrived and I'm not completly happy about it's soundquality (using 19V 6.3A powersupply from old notebook). It sound's a bit "rough" to my ears, and it becomes "flat" when making it loud.
Do you have any suggestions of cheap boards/modules (max. 20-40€/2 Channels)?
I'm currently thinking about thoose cheap LM3886 based boards (like HIFI YJ LM3886 68W + 68W Stereo-Verstärkerplatine 3pcs insgesamt | eBay ), as LM3886's seem to have a decent reputation. Though I'm a bit confused about their power supply. Can anyone here explain how to use them on AC? I'm quite a newbie in electronics, and I don't understand these DC "+-+" power supply boards with the huge capacitors... are they only for "buffering" energy and for filtering noise from AC-DC switching power supply? And which AC-DC power supply I should use? 26V are not very common. Would a 19V power supply also work with some loss of output power?
And what do you think about TK2050 modules you can find on E*ay etc. for ~18$ (New TK2050 50W+50W Class T HIFI Stereo Audio Digital Amplifier Board 12V Voltage -- BuyinCoins.com )? Only small problem with them I can find is that they have a weird plug for audio imput (how are they called?) and I'm not sure if they are working well with my mostly 4 ohm speakers, as they say "output impedance: 6-8ohm".
Are there any other good or better fully assembled boards I should know of? I'm not very good at soldering.
Thx in advance!
PS: English is not my native language, so please be kind with me 😉
This is my first post.
I hope I'm in the right sub-forum here 😉
I was big fan of Lepai LP-2020 (Tripath TA2020), but now I've bought an quite massive 20yrs old HiFi 7 speaker audio system (2x 120W front, 2x 60W surround, 1x 80W center, 2x 100W bass, all have 4ohms) and the tiny amp doesn't have enough power to get a decent volume, except for the surround speakers, but I have to make the amp quite loud and I'm getting some strong distortion there.
So I'm looking since a few weeks for a good and more powerful but still cheap Class D amp... when I will find one I like I will buy one for 2 speakers each and make in 5.1 channel system out of it (using an DTS decoder).
First I've tried the fully assambled TPA3116D2 module for 22€ from Eb*y, as it looked good and was cheap, and anything was ready to use, but now it arrived and I'm not completly happy about it's soundquality (using 19V 6.3A powersupply from old notebook). It sound's a bit "rough" to my ears, and it becomes "flat" when making it loud.
Do you have any suggestions of cheap boards/modules (max. 20-40€/2 Channels)?
I'm currently thinking about thoose cheap LM3886 based boards (like HIFI YJ LM3886 68W + 68W Stereo-Verstärkerplatine 3pcs insgesamt | eBay ), as LM3886's seem to have a decent reputation. Though I'm a bit confused about their power supply. Can anyone here explain how to use them on AC? I'm quite a newbie in electronics, and I don't understand these DC "+-+" power supply boards with the huge capacitors... are they only for "buffering" energy and for filtering noise from AC-DC switching power supply? And which AC-DC power supply I should use? 26V are not very common. Would a 19V power supply also work with some loss of output power?
And what do you think about TK2050 modules you can find on E*ay etc. for ~18$ (New TK2050 50W+50W Class T HIFI Stereo Audio Digital Amplifier Board 12V Voltage -- BuyinCoins.com )? Only small problem with them I can find is that they have a weird plug for audio imput (how are they called?) and I'm not sure if they are working well with my mostly 4 ohm speakers, as they say "output impedance: 6-8ohm".
Are there any other good or better fully assembled boards I should know of? I'm not very good at soldering.
Thx in advance!
PS: English is not my native language, so please be kind with me 😉
¿what tpa3116 has received??, as you can see there are several models, some of them well designed, some not well designed.
Yesterday i received the same tk2050 board, and you an solve your trouble with audio input conector with a solder (even you are not good soldering) and , the board sound well (sorry but i have not connected to my eltax speakers yet).
If you buy the LM3886, you will need special ac transformer.
Yesterday i received the same tk2050 board, and you an solve your trouble with audio input conector with a solder (even you are not good soldering) and , the board sound well (sorry but i have not connected to my eltax speakers yet).
If you buy the LM3886, you will need special ac transformer.
Thank you!
I recieved this one:
Latest 2.1 digital amplifier board TPA3116D2 Red ring inductance Beyond LM1875 | eBay
I doesn't sound "bad", it simply sounds worse than I'm used to
Please could you try to use the TK2050 board with 4 ohm speakers? Would be nice to know if it works.
Could someone give a tip which powersource is cheap and good for LM3886? Does it have to be exactly 28V or are 26V etc. also okay?
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You could also consider this. It seems to have better quality components than other brands. You can find this chips used in very cheap boards as well (20-25$)
Aliexpress.com : Buy High end quality TDA8950 Class D audio power amplifier AMP DIY Assembled board from Reliable amplifier housing suppliers on Weiliang Audio
I know the chip and it does sound good, especially for woofer.
I do not know weiliang, but they seem to be fine, and the board is not to small with and connectors and components seem to be ok.
Aliexpress.com : Buy High end quality TDA8950 Class D audio power amplifier AMP DIY Assembled board from Reliable amplifier housing suppliers on Weiliang Audio
I know the chip and it does sound good, especially for woofer.
I do not know weiliang, but they seem to be fine, and the board is not to small with and connectors and components seem to be ok.
Sorry i have not 4ohm speakers (only 8 and 6 ohm).
You can try this
1pc TPA3116 2 0CH Class D 2 50W Amplifier Board New Version | eBay
or this
2 Channels TPA3116 Amplifier Assembled Board 50W 50W | eBay
(last one is optimized for 8 ohm speakers), first one... i dont know.
Another question, 2.1 boards for 3116 are bad designed (so forget them, if you want 2.1, buy two diferents boards).
Behringer EPQ304 Europower - Thomann Danmark
You could make a nicer cabinet out of wood, and call it DIY😀
You could make a nicer cabinet out of wood, and call it DIY😀
???
Please could you explain that? What's double AC power supply? And how to get it?
A transformer is used to raise or lower AC voltage. In this case it lowers.
It does that with coils of wire.
The primary coil connects to the wall plug.
The secondary coil can be one or many coils.
A single secondary coil would create a single AC output which then needs to be rectified and filtered to make a nice clean DC power supply.
A dual rail supply has a special secondary coil with a center tap or identical dual secondary coils that can be connected to make a center tap. With two rectifiers and filter cap banks you can make a ~dual supply with common ground. One supply will be positive DC voltage, the other will be negative DC voltage.
Transformers make changing voltage easy but only with AC.
Changing DC voltage requires a complicated switching power supply.
Changing AC to DC isn't that hard (just rectifiers and caps) so unregulated supplies are always made with a transformer, rectifier and caps.
If you only need a single supply, ready made power bricks are the easy way.
Dual supplies are mostly DIY or salvaged from a class AB amp.
It does that with coils of wire.
The primary coil connects to the wall plug.
The secondary coil can be one or many coils.
A single secondary coil would create a single AC output which then needs to be rectified and filtered to make a nice clean DC power supply.
A dual rail supply has a special secondary coil with a center tap or identical dual secondary coils that can be connected to make a center tap. With two rectifiers and filter cap banks you can make a ~dual supply with common ground. One supply will be positive DC voltage, the other will be negative DC voltage.
Transformers make changing voltage easy but only with AC.
Changing DC voltage requires a complicated switching power supply.
Changing AC to DC isn't that hard (just rectifiers and caps) so unregulated supplies are always made with a transformer, rectifier and caps.
If you only need a single supply, ready made power bricks are the easy way.
Dual supplies are mostly DIY or salvaged from a class AB amp.
First: I think you picked only 3116 ampboard available that only has electrolytic inputcapacitors, but maybe there are others I missed.
Second: 2.1 amplifier, you are powering two 3116 amplifiers from a laptop supply that according to TI EVM manual isn't powerfull enough to power one 3116 chip.
I don't know your 2.1 ampboard, but 3116 doesn't need to sound flat when played louder.
Second: 2.1 amplifier, you are powering two 3116 amplifiers from a laptop supply that according to TI EVM manual isn't powerfull enough to power one 3116 chip.
I don't know your 2.1 ampboard, but 3116 doesn't need to sound flat when played louder.
What does that mean?
The manual says 4.5V 8A is enough... I'm using 19V 6.3A and it sound a bit flat/powerless and slightly tinny. My TP2020 sounds much better even with an 13,5V 2A powersource.
I've ordered an 24V 6.25A power supply, I will report if it's much better with it.
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