- #1
- 659
- 241
Thought I would share my latest project. I decided to make a stereo amplifier out of Vacuum tubes. I think I finally have the noise and distortion levels as low as I can get them. The amplifier outputs about 88W rms per channel before it clips the output.
Here is the internal wiring
This is a schematic diagram of a single channel. This is mirrored for the left and right channels.
Here is what the 1kHz square wave output looks like. There is clearly some attenuation at low frequencies as can be seen from the shallow slope at the peaks of the wave. I'm not really sure if this is due to the output transformers, the tubes, or if using bigger capacitors would help. I imagine its a combination of all of the above.
Has anyone else here done similar projects? I would love to hear your thoughts on designing these types of amplifiers.
Here is the internal wiring
This is a schematic diagram of a single channel. This is mirrored for the left and right channels.
Here is what the 1kHz square wave output looks like. There is clearly some attenuation at low frequencies as can be seen from the shallow slope at the peaks of the wave. I'm not really sure if this is due to the output transformers, the tubes, or if using bigger capacitors would help. I imagine its a combination of all of the above.
Has anyone else here done similar projects? I would love to hear your thoughts on designing these types of amplifiers.