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noise while using gain switch

PostPosted: Wed Mar 30, 2011 2:33 pm
by mikikiki
I've done 2 J99. They work like a charm and the sound is impressive, except for a "tac" I can hear on every gain change of position

The "tac" increases every gain step

This is happening on both j99 I made... Maybe a ground problem?

PostPosted: Sun Apr 03, 2011 2:57 pm
by tpryan
Did you complete the input bias current adjustment and install the jumpers correctly?