Strange, maybe a cold solder joint?
goodolpg Just an old fart trying to help. Subscriber Aug 14, 2015 #22 There's not a whole lot in the path between input and woofer. Schematic here--> http://www.infinity-classics.de/technik/manuals/Kappa_6.1_technical_sheet.pdf Maybe try point to point checking resistance with a multi meter?
There's not a whole lot in the path between input and woofer. Schematic here--> http://www.infinity-classics.de/technik/manuals/Kappa_6.1_technical_sheet.pdf Maybe try point to point checking resistance with a multi meter?