Fran,
I'll check it out the next time I can find a place that sells them close to my area. I'm always interested in a significant improvement, but the weight, which is listed at 50 pounds, is not my cup of tea. However, if you are going to supply the fork lift, I might take this into consideration.

As for the Bose wattage, it has more power than I'll ever need. When I performed a Concert In The Park at Aberdeen, Maryland's Municipal Park last summer I was able to easily reach folks that were sitting nearly 600 feet from the L1's tower. And, I never turned the master volume above 50 percent. I seriously doubt that the K4 could reach someone that far away, especially outdoors. Additionally, when I see a wattage specification on the spec sheet that does not say peak or RMS, I can guarantee you that it is is peak wattage--not RMS. Bose provides both peak and RMS ratings, which is the same thing that Barbetta, York, Peavey and a host of other manufacturers provide. If you have some information that shows this is not peak watts, I would sure like to see it.
Cheers,
Gary
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Travlin' Easy