Hammer...
For the last couple of years I have been using the Yamaha 3K (as you know). I tweaked EQ and a few of the internal settings to run through a JBL system I was using prior to getting the Bose.

After getting the Bose I didn't do much in the way of changes in the keyboard and experimented with several of the Bose presets, wavering between 05,12,55 & 57. I couldn't find a consistent preset that would work in ALL the venues I play.

Last Wednesday, I set up in the afternoon for a night gig and took a cue from DonM. I used preset 00 and reworked the EQ in the keyboard until I felt satisfied. It worked great.

The next afternoon I set up in another hall with a different type of stage and it sounded completely different to me...thin, lacking the nice round sound I have been used to. Rather than adjust the 3K, I tried my usual presets and found 55 did the trick (for this room, anyway).

Later, that night, during the gig, two audience members came up to comment on how clear and full everything sounded.

Moral: I'm not sure ANY ONE setting is going to perfect for EVERY venue. I always try to set up and do a sound check in the afternoons. However, when the room becomes full of people, I often find myself modifying the keyboard's EQ on the fly.

Eddie