The voltage was "bouncing" on peaks. It was nominally 122 volts, but would drop to 120 in time with the music. Which was easy to understand since we fed the system with a pretty basic utility extension cord. I placed the speakers atop a brick wall that separates his drive from the tennis court behind. It also served to reinforce the bass. I was amazed how well they projected with a very clean sounding result containing none of the typical sound reinforcement system edge! I ran them full tilt (~400 watts into 4 ohms) for over four hours. One of the selections was Destiny's Child Bootylicious which had the woofers performing visual calisthenics with the bass punch. They still have it after thirty plus years!
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