Audio amplifire project

371

03:07:54

Now I am designing an audio amplifire This is the whole image of a channel of it. Please see linked circuts for details.

CONCEPT
2 channel stero system.
Good sound using less expensive parts.
Enough, but not too much output, good power efficiency.

FUTURE
Multiple inputs selectable balanced or unbalanced, and mixing them up for output.
Work as balanced processing system internally.

==== Update ====
2016-06-14
- Connecton of pre-controlling amplifire block
- Summing amplifire image
- Headphone amplifire image added

2016-07-03
- Headphone amplifire image changed

==== Followings will be updated night by night :-). ====

Powe supply (2016-06-12) http://everycircuit.com/circuit/5541715521306624

Pre-controlling amplifire block (2026-06-12) http://everycircuit.com/circuit/4625898571038720
- Input buffer (2016-06-12) http://everycircuit.com/circuit/6320862183030784
- GND level ajuster (2016-06-18) http://everycircuit.com/circuit/5273525247541248
- Signal mixer (2016-06-18) http://everycircuit.com/circuit/5661374551687168

Power amplifire block (2016-06-12) http://everycircuit.com/circuit/5621826056617984
- Voltage amplifire (2016-07-12) http://everycircuit.com/circuit/6165576239546368
- Output current buffer (2016-07-12) http://everycircuit.com/circuit/4983824309551104

Headphone amplifire (2016-07-12) http://everycircuit.com/circuit/6144780544770048

published 9 years ago

deadall127

9 years ago

When I make an amplifier, I have to make a choise between to things: good sound OR good efficiency (B class or D), depends on the power supply, for me A class is shit and AB class is strawberry flavoured shit, G class seems to be the best but the power supply is a little difficult to make (essencialy to make it small) so there isn't THE best ultimate amplifier that's why I really like them. I also really like your presentation with links ;)

FitFat

9 years ago

Thanks for comming. I agree with you. This case, I am using this one in my small room, then it's not required so much output.Therefore, I may frequently use it with low level output, then I've wanted to avoid swtching transistors during the signal level is close to GND. This is reason to have intended class A. Actually, this can not work as class A when signal is high level, I don't matter it. It's same reason to try balanced processing, but I don't know how it works for home use audio systems. It's unusual for home use. I am not going to use cables or connectors for professional use, because it's expensive. I have to decide what kind of cables and connectors I use later. --- And thank you again for reading I wrote. It's more difficult for me to write English than to write circuts :-).

deadall127

9 years ago

Ok, I think this very great when people write in english in an international app like this one when it's not his native language and especialy when it's difficult for him, I write here nearly as easy as in french but I'm confused: I have to write "A class" or "class A"? I was thinking that "A" is like an adjective, so it has to be puted before "class" but it seems that everybody write it "class A" :/

deadall127

7 years ago

It has been a long time, I learned a lot and I was wrong: there is a best amplifier: the H class, the sound quality of a double B plus a consumption near the D

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