Hello
My Behringer BX4500H start to sound very weak last week.
I've tried to pilot the power stage (Behringer P3000) directly from the FX Return monitoring the output on a 8 Ohm load with a scope.
What I got is a clean sine wave until 36W c.a.(17V rms) than the bottom peaks became chopped and the red led on the board lights up.
At the same time I've monitored the power supply rails just to notice that when I apply a signal the - side goes down, while the + side goes up.
Aren't they supposed to be steady?
At rest and with no load the PSU rails are +63,5V and -62,6V and I have 25mV DC on the output.
My Behringer BX4500H start to sound very weak last week.
I've tried to pilot the power stage (Behringer P3000) directly from the FX Return monitoring the output on a 8 Ohm load with a scope.
What I got is a clean sine wave until 36W c.a.(17V rms) than the bottom peaks became chopped and the red led on the board lights up.
At the same time I've monitored the power supply rails just to notice that when I apply a signal the - side goes down, while the + side goes up.
Aren't they supposed to be steady?
At rest and with no load the PSU rails are +63,5V and -62,6V and I have 25mV DC on the output.
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Try looking at the output signal without a load attached. If it looks OK then your problem should be isolated to the output stage. One or both channels?
Craig
Craig
Thank you, Craig.
Without load I have a nice clean output.
The + rail stay steady, while the - rail goes down a little bit with signal applied.
There's only one channel since this is the power stage of a bass amplifier.
Without load I have a nice clean output.
The + rail stay steady, while the - rail goes down a little bit with signal applied.
There's only one channel since this is the power stage of a bass amplifier.
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