Summary: After a bit of troubleshooting I determined that it was probably a wiring problem so I took the speaker apart and after more testing it turned out to be a bad solder joint at the speaker terminal on the positive wire from the amplifier. A quick application of solder flux, a touch of the soldering iron and the speaker now works fine. Enjoyed them all day Sunday without issue.
Pros: Good sound, nice cabinets, good controls, multiple inputs (front & rear), headphone output, wood cabinets (good for speakers), plenty of volume.
Cons: The right speaker did not work. Uses an inefficient transformer based power supply.
Summary: First, I went back and forth on giving a 4 or 5 star for sound quality because the bass on these speakers are deep, even on a low setting, depending on which song I'm playing. I have a very little hearing in my right ear when it comes to low tones and higher tones is also limited but not as bad. So when I bought these speakers, it was for more bass, a clearer/sharper treble and I think it has worked almost perfectly.
Summary: No problems after 2 years of ownership and everyday use. The only minor annoyance is the bright blue power-on light -- it is so bright, it actually draws your eye away from the screen. I remedied the situation with a small piece of paper and scotch tape.