Tony,
The picture I posted was from the venue's picture gallery. The purpose was to show the size of the room.

When we performed the tables were set up along the walls, with the whole center of the room open for the dancers.
The ballroom dancers use every inch of the floor, especially when doing the Viennese waltz and Tangos.

Bill,
I used only 1 JBL Eon One.  I plugged the vocalist's mic into the Tyros, and the Tyros into ch 3 & 4 on the JBL. That's it.

The stage really resonated with the bass from the unit.

I was really surprised myself with the performance of the unit.

Easiest setup ever. They had a small handicap elevator to the left of the hall for the equipment, and the JBL is in a free $120 transporter case w/wheels.

Regards,

Jerryghr