Mo,
I tried the Yamaha when it first came on the market. I took it back two hours later--it was mediocre at best.
As for bands playing too loud, sometimes it's difficult for some folks to get away from the old playing techniques they've been using for years with conventional sound systems. When the Bose L1 is set up properly, it blows away every conventional sound system I've ever heard.
The best conventional system I've used, one that was relatively lightweight, was the Barbetta Sona 32C. Lots of bottom end, great mids, excellent highs and all the features anyone could want in a 32-pound package. You'll find them at
www.barbetta.com but it ain't cheap. Street price is about $699.
The next best thing is the Logitech Z-5500 system, which I still use for some small jobs. Great highs, fair mids, gut thumping lows and with a street price of $299 it rocks. I'm installing one in an Italian restaurant next week for a fellow performer.
Cheers,
Gary
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Travlin' Easy