I have an Infinity BU-2 powered subwoofer (ca. 1999) and absolutely love the sound, but it's picking up ham radio transmissions. I'm not getting the interference on any other pieces of equipment in my AV system. I switched out the sub with a newer Yamaha powered sub (ca. 2006) and a Polk Audio powered sub (ca. 2018) and neither of these receives the interference so I'm ruling out the audio cable and power cable and blaming something internal in the BU-2? I like the performance of the BU-2 better than the other subs, so don't want to give it up if I don't have to. Looking for any help on blocking the radio interference, or due to the age of the BU-2 if it's a lost cause.
