Hello all,
Is anyone aware of a good source of information on reading THD frequency sweep graphs so as to identify the prevalent sources of distortion in a particular solid state amplifier?
I am working on version 2.1 of a solid state amplifier board and have made distortion sweep graphs (THD, 2nd harmonic, 3rd harmonic) at various operating conditions (1W, half power, 50W full power ; 8ohm, 4 ohm load) and now am working to unpack the graph lines to discern which amplifier distortion mechanisms are dominant and need attention most.
I have worked (several times) through my copy of Douglas Self's 6th edition work on power amplifiers, but would find it helpful to review an article or chapter that lays out how to ID the various distortion sources from test data in one consolidated source. That type of information is splattered across the whole length of Self's book and I have tried to sift it out slowly.
Any tips would be appreciated.
Mike Miller
Is anyone aware of a good source of information on reading THD frequency sweep graphs so as to identify the prevalent sources of distortion in a particular solid state amplifier?
I am working on version 2.1 of a solid state amplifier board and have made distortion sweep graphs (THD, 2nd harmonic, 3rd harmonic) at various operating conditions (1W, half power, 50W full power ; 8ohm, 4 ohm load) and now am working to unpack the graph lines to discern which amplifier distortion mechanisms are dominant and need attention most.
I have worked (several times) through my copy of Douglas Self's 6th edition work on power amplifiers, but would find it helpful to review an article or chapter that lays out how to ID the various distortion sources from test data in one consolidated source. That type of information is splattered across the whole length of Self's book and I have tried to sift it out slowly.
Any tips would be appreciated.
Mike Miller