Hi guys i have a pheonix gold m50 amplifier that has a loud turn on thump. I have measured the output of the amp at
turn on and it gets an ac wave form of 43hz for about 120ms with a peak voltage of 6v which
tapers back to zero. The wave forms are the same for each channel but 180 degrees out of phase.
This spike occurs at the exact time that the voltage starts to rise on the high voltage rails.
My question is does anybody have any thoughts as to how i can fix this or better still does anybody
have the circuit for this amplifier.
Any help will be greatly appreciated.....
turn on and it gets an ac wave form of 43hz for about 120ms with a peak voltage of 6v which
tapers back to zero. The wave forms are the same for each channel but 180 degrees out of phase.
This spike occurs at the exact time that the voltage starts to rise on the high voltage rails.
My question is does anybody have any thoughts as to how i can fix this or better still does anybody
have the circuit for this amplifier.
Any help will be greatly appreciated.....