High pitch hiss sound from speakers

bigbadmiker

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Joined
Jan 1, 2010
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Location
Washington
Hi,


My MK2 cab has a high pitch hiss coming from the speakers. I swapped out the main pcb and the sound board with a spare I have and it does the same thing. I checked the voltage from the power supply and it seems ok...+5v can be adjusted below or above 5v. When I turn up the voltage, the hiss gets a little louder, but I don't think the PS is the problem.


Are my speakers the problem? Has anyone encountered this?


If it's the speakers, are they easy to swap out, like car speakers?
 
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