Hi everyone.
I need some help to investigate my subwoofer amplifier.
It is an Class D XTZ plate amplifier.
I observe a normal situation but No sound or output from amplifier.
When sound is on from preamp i can see led change from red to green (Auto on). When measuring VCC+ andVCC-, i have 0v DC. Normally when amp is on, i belive it should be approx 50V DC on this terminal? Is this high voltage normally on when amp is on or is it turned on by the preamp (Auto on function?). I do not have any scematic.
I need some help to investigate my subwoofer amplifier.
It is an Class D XTZ plate amplifier.
I observe a normal situation but No sound or output from amplifier.
When sound is on from preamp i can see led change from red to green (Auto on). When measuring VCC+ andVCC-, i have 0v DC. Normally when amp is on, i belive it should be approx 50V DC on this terminal? Is this high voltage normally on when amp is on or is it turned on by the preamp (Auto on function?). I do not have any scematic.
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