Thx. Will look them up. Guess nobody knows about a killfuse. The power cord was not the issue. Have not dealt more with the ProMedia 10" sub. Been running speakcable behind the wall for new 7.1 setup.
Fortunately have a Klipsch substitute sub, a 13 year old ProMedia 2.1 150W sub that will do in a pinch. Sure am glad hung onto my old 2.1. Packs a lot in that 6.5". -3dB is 32Hz I think, but can get a DSP audio processor to synth -3dB down to 10Hz easily. Did that with a Klipsch ProMedia 8" before replaced with the 10".