I thought the Bose L1 sounded pretty weak...and it's MONO...
Wasn't it originally designed for the solo vocalist/guitarist...seems to be prominently featured in their promotions?
Does nothing for an arranger, IMO.
Give me two powered speakers in stereo any day.
Yamaha Tyros4, Yamaha MS-60S Powered Monitors(2), Yamaha CS-01, Yamaha TQ-5, Yamaha PSR-S775.