So i picked up two audison srx 4.1's. In the auction they stated they did not power up, i hooked them up and they both work perfect, with the exception one of them seems to have messed up rca jacks. The solder joints on them itself are fine. When i connect an rca 3 outta 4 of them are not a tight fit which causes them to move around the output will cut in and out. Any one know where i can get replacement rca jacks. The other audison amp does not have this issue using the same rca cables. Also on a side note, does any one also know where i can get potentiometer knobs ?