Hello,
please find attached A200 schematic.
Musical Fidelity A200 - Audiomaniacy
I own Musical Fidelily A120 which has more or less same schamatic as A200.
As you may know Class A is limited to a few watts beyond which (A1, A100, A120) switch to class AB.
Which component should I have to change and trim to SAFELY increase the bias for a wider class A range?
Actually is shown 300mV on 0.47 ohm, that is 0.64A only!
Definetively not a 40+40W Class A as declared.
please find attached A200 schematic.
Musical Fidelity A200 - Audiomaniacy
I own Musical Fidelily A120 which has more or less same schamatic as A200.
As you may know Class A is limited to a few watts beyond which (A1, A100, A120) switch to class AB.
Which component should I have to change and trim to SAFELY increase the bias for a wider class A range?
Actually is shown 300mV on 0.47 ohm, that is 0.64A only!
Definetively not a 40+40W Class A as declared.
"Strongly biased into class A" isn't pure class A .
A hint is the bias you measured in the link I provided the version quoted is biased at 700manot much different from your measurements .
It therefore reverts to to class AB at about (his version) 8watts.
Musical Fidelity A1 › Technical
A hint is the bias you measured in the link I provided the version quoted is biased at 700manot much different from your measurements .
It therefore reverts to to class AB at about (his version) 8watts.
Musical Fidelity A1 › Technical
These amps like dying from a heatstroke with the factory bias
Unless you rebuild it using a proper PS and proper heatsinks you should leave the bias alone
Very true!
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