Quote:
Originally Posted by Hartley118
Quote:
Originally Posted by vampyretim
Hi all,
With the preamp connected or disconnected from the BNC input the 5-10 hisses but with the preamp disconnected and the 5-10 BNC input shorted to deck the hiss practically disappears. I have tried replacing the 2.2M resistor but it made no difference. I'm a bit confused, does this make sense to anyone?
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This finding suggests that the power amp is blameless and you're just hearing the thermal noise of the 2 megohm input resistor.
Martin |
Which 2 Mohm resistor do you mean Martin - I can't see one in either the 2-valve preamp or the 5-10 without controls.
Mike