In M1-5B Districts, the Board of Standards and Appeals may permit theaters for a term not to exceed five years, provided that the following findings are made:

(a)        that such use will not impair the character or the future use or development of the surrounding residential or mixed use neighborhoods;

(b)        that such use will not cause undue congestion in local streets; and

(c)        that such use provides a waiting area of adequate size to prevent obstruction of street areas and other uses within the same or other building.

The Board shall prescribe appropriate controls to minimize adverse effects on the character of the surrounding area, including, but not limited to, location of entrances and operable windows; provision of sound-lock vestibules; specification of acoustical insulation; maximum size of establishment; number, kinds of amplification of musical instruments or voices; shielding of flood lights; adequate screening; curb cuts, or parking.