Thank you both for you help, Joegio and 1439bhr. After doing some more homework I think I got it. But your- or anyone's feedback would be greatly appreciated... did I get it right? Doing Capacitor in series in the signal path with a Resistor bridging across power amp inputs (choice 3, 1439bhr) I have reached the following conclusions: Using a 0.1 uF Cap and 20 Kohm Resistor: Fx = 1/ 2*Pi*R*C where R = r1*r2/r1+r2 => 1/ 6.283*12.45283*0.0001 => Fx = 127.8Hz. In other words, using 0.1uF Kimber Cap and a 20 Kohm Resistor with my power amp's 33 Kohms input impedance will provide a 127.8Hz High Pass filter. Did I get this right? Now the next step. Any suggestion on how to solder this together... the right way. How do I insulate this (i.e. signal path from ground etc.) and support it in place (such as mounting the RCA jacks on a plate??). Thanks, Arni
