the lm3886 is interesting as it can be easily converted to current drive.
class d amps not (so easily)
Sonically I enjoy really CS8673 from the class D domain.
Here someone on it
class d amps not (so easily)
Sonically I enjoy really CS8673 from the class D domain.
Here someone on it
That's a marketing expert trying to sell you the newer TI chip.
Maybe tpa3255 will make a nice amp but I couldn’t find a thru hole board ( so I can build by myself) for it.
Already built tpa3255 modules are very available, some for very cheap prices.
If you want to DIY , then lm3886 is the way.
Already built tpa3255 modules are very available, some for very cheap prices.
If you want to DIY , then lm3886 is the way.
The TPA3255 and the LM3386 are very different devices, hard to compare directly.
The TPA is a class D amp, and it does not like high inpedace speakers, better in 2-4R,. It can be configured as mono, stereo or four channel and with a nice implementation that includes PFFB it can have outstanding quality. You really need a PCB, better multilayer given the high frequency operation of the chip. It's rather powerful and forgiving of the power supply,.A 48V switching power supply from Telco equipmentcan provide over 100W per channel clean. ( or 300W with lots of distortion ).
LM3886 is an AB class amp. A good implementation can provide superb results. As a class AB it's more sensitive to power supply quality and it needs a inear power supply.. maximum power is 68W in mono (according to ti) and they like 8 ohms impedance. Since the chip can be used in a perf board, it is more conductive to prototyping. Also it is easier to use with most 8R speakers. It's a great chip, capable of superb quality with a good implementation. I am sure here in the forum there are many discussions and several people that sell PCB unpopulated.
Personally I like class-d over ab, but many people dislike the sound of D. I would say that the decision should be based on if you prefer one class , the impedance of the speakers and the wattage required.
PD. I live in USA,FL, but I was born in Spain, . Just came back from Pontevedra
The TPA is a class D amp, and it does not like high inpedace speakers, better in 2-4R,. It can be configured as mono, stereo or four channel and with a nice implementation that includes PFFB it can have outstanding quality. You really need a PCB, better multilayer given the high frequency operation of the chip. It's rather powerful and forgiving of the power supply,.A 48V switching power supply from Telco equipmentcan provide over 100W per channel clean. ( or 300W with lots of distortion ).
LM3886 is an AB class amp. A good implementation can provide superb results. As a class AB it's more sensitive to power supply quality and it needs a inear power supply.. maximum power is 68W in mono (according to ti) and they like 8 ohms impedance. Since the chip can be used in a perf board, it is more conductive to prototyping. Also it is easier to use with most 8R speakers. It's a great chip, capable of superb quality with a good implementation. I am sure here in the forum there are many discussions and several people that sell PCB unpopulated.
Personally I like class-d over ab, but many people dislike the sound of D. I would say that the decision should be based on if you prefer one class , the impedance of the speakers and the wattage required.
PD. I live in USA,FL, but I was born in Spain, . Just came back from Pontevedra
The term Class D sound is an artifact from the past and does not apply anymore with the latest Chips on the market. The sound you get is highly dependent on the implementation.
Drive them balanced and substitute the opamps with a discreete or better yet tube based stage and they rival mid priced class A amps.
Same can be said about the LM3886/4780.
I got a hard wired LM4780 China amp that's stunning sounding after I got rid of the cheap coupling caps. Good thing is it doesn't need a balanced signal to sound good.
Drive them balanced and substitute the opamps with a discreete or better yet tube based stage and they rival mid priced class A amps.
Same can be said about the LM3886/4780.
I got a hard wired LM4780 China amp that's stunning sounding after I got rid of the cheap coupling caps. Good thing is it doesn't need a balanced signal to sound good.
TPA3255 is the choice now. TDA7293 can be better then Lm3886.
Like me, if you are using it in a receiver, an analog amplifier is a better choice as no RF is emitted.
Like me, if you are using it in a receiver, an analog amplifier is a better choice as no RF is emitted.
I did TPA3250 vs LM3875 with a switcher box for quick changes. I think I liked the TPA just a bit better, but it was very close. It wasn't blind, so maybe just sighted preference. Unusual loads might make a class D's output filter behave oddly.
They're cheap, get both.
They're cheap, get both.
I have both
In test bench, you will find class D is not as good as LM3886 (if they booth have good implementation and same power). Class D have bad reputation in distortion above 4khz, load dependency,yes you can use PFFB but it will lower your gain
But in real world they both will sound the same unless you are an audiophile. I still choose class D amp, its small, more powerful, and i'm not an audiophile. Playing 7.1 movie with class AB amp will give you a rack of amplifier while class D you can stack them in a desk
In test bench, you will find class D is not as good as LM3886 (if they booth have good implementation and same power). Class D have bad reputation in distortion above 4khz, load dependency,yes you can use PFFB but it will lower your gain
But in real world they both will sound the same unless you are an audiophile. I still choose class D amp, its small, more powerful, and i'm not an audiophile. Playing 7.1 movie with class AB amp will give you a rack of amplifier while class D you can stack them in a desk
For anyone interested there is a GB of XRK’s very well liked TPA3255 board , subject to 10 boards being ordered. Here:
Post in thread 'TPA3255 Reference Design Class D Amp GB'
https://www.diyaudio.com/community/...nce-design-class-d-amp-gb.340880/post-7990262
Post in thread 'TPA3255 Reference Design Class D Amp GB'
https://www.diyaudio.com/community/...nce-design-class-d-amp-gb.340880/post-7990262
This is DiyAudio, audiophiles are the norm here.
Amps do not sound different for different groups of people😎
But I know what you mean.
I enjoy good sound even in movies. Some soundtracks in movies are better than the CD pressings of the same Song.