Thanks Tony and Bill... I have fun singing!

Bill... Like anything, the further you go away from the speakers, the lower frequency drops off. The 12" DXR will give you deeper response. The 15" will give you a subwoofer experience but much more to carry. Yamaha has some DSP by the company NEXO (Tour Grade Audio) built into the DXR series. Tonight's gig had me singing Brown Eyed Girl from a track I did on the Motif ES. The bass and bass drum really kicked where I was... Not sure about the rest of the room which was a room with tall ceilings... The room could hold 100 with out tables.

Once I get the BK9, I'll take my setup to my church and I will let it fly! I'll use the USB recorder to record my performance and play it back at the same volume and walk the room. I'll report back to you my findings. As a note... When we do wedding gigs... The dance floor has to boom so we add the EV SbA760 subwoofer to the DXRs running full range.