I have a bunch of a BD911 and BD912, had full of BC-s, and transformer with 2x20v ac. That gives about 2x40w at 6 ohm. I have tried to find schematic for this kind voltage but found couple of "no name" type schematics.
Can anyone suggest some fairy simple schematic for 2x28V but some good quality amp?
I'll try to find schematic that i have made but I'm not pleased with it because it's midrange is very bad sounding 🙁
Also, i must say that, building amp with Lm3886 and similar maybe is faster but it takes away all the fun of building one 🙂
Can anyone suggest some fairy simple schematic for 2x28V but some good quality amp?
I'll try to find schematic that i have made but I'm not pleased with it because it's midrange is very bad sounding 🙁
Also, i must say that, building amp with Lm3886 and similar maybe is faster but it takes away all the fun of building one 🙂
Elliot P3A or any Lin-Bailey Class AB/B variant, like the Elektor Darlington amplifier from 1982 by T. Giesberts. This topology gives excellent performance, while leaving a lot of room for sonic tweaking, a la Hugh Dean's AKSA and its higher-end upgrades.
How about the bameless amp from Self. If I had components laying around that would be interesting for me. All types of distortions cancelled out as per Douglas Self. A very clear and precise amplifier indeed.
Placing
Green lines are wire links, blue line is the heatsink of BD139
http://forum.audiodiy.hu/download.php?id=2058
2.2uH coil is air-cored, 23 turns of D=1mm enamelled cooper wire, on 10mm former, length is 24mm
Amp performance: THD and IMD <0.01%, ...50W, 20Hz...20kHz
Green lines are wire links, blue line is the heatsink of BD139
http://forum.audiodiy.hu/download.php?id=2058
2.2uH coil is air-cored, 23 turns of D=1mm enamelled cooper wire, on 10mm former, length is 24mm
Amp performance: THD and IMD <0.01%, ...50W, 20Hz...20kHz
Hi, Donk,
I'm very interested in your CCT, but unfortunately I don't understand it. How does your EC work?
I'm very interested in your CCT, but unfortunately I don't understand it. How does your EC work?
Hi guys,
Lumanauw, see the following links for working method of my amplifier:
http://www.google.com/patents?id=t6I7AAAAEBAJ&dq=3970953
http://forum.audiodiy.hu/files/ec50_m_460.jpg
Be careful, the attached schematic is only a test version, a prototype, It's not a final version!
There is a fault in the circuit and on the PCB-placing: the three 1N4148s in serial need to be three 1N4002s in serial!!!
Lumanauw, see the following links for working method of my amplifier:
http://www.google.com/patents?id=t6I7AAAAEBAJ&dq=3970953
http://forum.audiodiy.hu/files/ec50_m_460.jpg
Be careful, the attached schematic is only a test version, a prototype, It's not a final version!
There is a fault in the circuit and on the PCB-placing: the three 1N4148s in serial need to be three 1N4002s in serial!!!
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