MacLiam

I spoke too soon in my post just above; the sub was flaky again the next morning even with the better fitted power card. Then that evening I began to wonder if my wall outlet was completely reliable. I unplugged the sub and connected it to an empty 120 outlet on the back of my pre-amp, which draws from a different circuit. With the switch set to ON, the sub now consistently powers up when I turn on the power strip that feeds the pre-amp and the other system amps In a couple of hours last night and in several hours of heavy use today, the sub hasn’t quit or faltered once. On present evidence, my sub is OK but I need to dig into a possible power problem in a wall outlet — or maybe the whole circuit.

I found this discussion when researching the identical problem reported by others. In my case, it was down to the cheesy power cord. I thank those who pointed me in that direction. I got a pair of needle-nose pliers, bent each of the connector blades on the back of the box inward 1/32 inch, and reconnected. The plug now requires a little effort to push on or pull off, and is non-wobbly when in place. The sub was fully functional when I repowered, and it has stayed on.