Hello, I have this amp and it sounds great. All PSU caps are new and most of rest bigger signal caps are new. Also new mosfets and tubes. So far so good.
But, lately I have noticed that there is some problem with the left channel. When I am playing loud the left channel bass woofer plays out a stroke from bass drum/bass guitar and then its forced back. It seems like it suddenly came dc V to speaker and pull the element nearer to the magnet.
Have anyone here experience with this ?? I think there must be a broken/bad capacitor somewhere, but the question is where ? Theres a lot of them at the circuit board.
Please advise.
But, lately I have noticed that there is some problem with the left channel. When I am playing loud the left channel bass woofer plays out a stroke from bass drum/bass guitar and then its forced back. It seems like it suddenly came dc V to speaker and pull the element nearer to the magnet.
Have anyone here experience with this ?? I think there must be a broken/bad capacitor somewhere, but the question is where ? Theres a lot of them at the circuit board.
Please advise.
It might just be recovering from clipping - the circuit for this amp is AC coupled between tube drivers and the MOSFET section, so if the circuit clips, or the zener protection diodes conduct, the DC offset will be reset temporarily.
Going by the Moscode 300 circuit I found here, that is: Audio Asylum Thread Printer
Going by the Moscode 300 circuit I found here, that is: Audio Asylum Thread Printer
