Hi there,    i would allocate to rooms A & B MR52, one in each room. This considering that only half of the people will be using full capacity of what the equiment coud give us.   In rooms C&D two MR42, one in each room also.   In the middle of the whole saloom i would alocate another MR52 only for performance issues that could be felt in case of all the people were using more than one device at the same time.   Thanks, ... View more