Quote:
Originally Posted by Superhet Si
A BC107 works a treat. Total silence except for the wanted sounds!
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Which just shows how uncritical transistor subs can be. Beware that the BC107 is only rated at 100mA while I think the NKT775 is 300mA. If it works, doesn't overheat and runs at about the right collector current then it's fine. I mentioned collector current because the bias may need to be rather different for a silicon part.