Then again, it is possible that the E-B had the same number (although not the same, uprated type) of emitters as the Lakota. And since the latter had more emitters "in reality" than the corresponding model did...
Excelsior:
5x2 turrets on saucer dorsal surface
5x2 turrets on saucer ventral surface
4x1 turrets on secondary hull bottom
Undisclosed number of turrets elsewhere, not built into the model but possibly indicated on the never-seen-in-focus MSD
Lakota, seen firing in addition to above:
At least 1 emitter per saucer "box addition" side
At least 1 emitter between impulse domes
At least 1 emitter on the bubble from which the warp engine pylons branch out
Additional emitters indicated in E-B MSD:
2x2 flanking aft shuttlebay
Timo Saloniemi