Donny, I had a 20 inch sub woofer that weighed under 5 pounds, but that was back in 1973. It went down to frequencies far below the human hearing range. You really don't need heavy to have those low frequency sounds. And, it was powered with just 100 watts. It was awesome.

Gary cool
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PSR-S950, TC Helicon Harmony-M, Digitech VR, Samson Q7, Sennheiser E855, Custom Console, and lots of other silly stuff!

K+E=W (Knowledge Plus Experience = Wisdom.)