Hi folks,
i wanted to see how the technical quite different Creek amplifiers Evolution 2 and Evolutuion 50A perform in comparison.
So i simluated the circuits. The attempt is not perfect, as i don't have models for the correct output transistors.
I took similar ones, so the tendency of the simulation should be valid...
The Simulation:
This is how they perform in THD:
Evo 2:
50W 4R @ 1KHz: 0.015%
5W 4R @ 1KHz: 0.0045%
5W 4R @ 10KHz: 0.030%
Evo 50A
50W 4R @ 1KHz: 0.0031%
5W 4R @ 1KHz: 0.0029%
5W 4R @ 10KHz: 0.028%
At 50W The Evo 2 shows more k3 harmonics, may sound a bit stressed and harder.
At 5W both perform quite similar, the 50A has just less k2 and a little more 100Hz hum:
At 10KHz the result is similar.
The circuit of the 50A is technically better and shows more consistent distortion values with higher levels.
The 50A has a somewhat weak voltage supply filtering and can easily be improved.
i wanted to see how the technical quite different Creek amplifiers Evolution 2 and Evolutuion 50A perform in comparison.
So i simluated the circuits. The attempt is not perfect, as i don't have models for the correct output transistors.
I took similar ones, so the tendency of the simulation should be valid...
The Simulation:
This is how they perform in THD:
Evo 2:
50W 4R @ 1KHz: 0.015%
5W 4R @ 1KHz: 0.0045%
5W 4R @ 10KHz: 0.030%
Evo 50A
50W 4R @ 1KHz: 0.0031%
5W 4R @ 1KHz: 0.0029%
5W 4R @ 10KHz: 0.028%
At 50W The Evo 2 shows more k3 harmonics, may sound a bit stressed and harder.
At 5W both perform quite similar, the 50A has just less k2 and a little more 100Hz hum:
At 10KHz the result is similar.
The circuit of the 50A is technically better and shows more consistent distortion values with higher levels.
The 50A has a somewhat weak voltage supply filtering and can easily be improved.
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