- The 30AE Ceiling Speaker provides additional economical paging coverage to existing Viking paging units (PA-2A PA-15 PA-30 PA-60 M2W) or to any system with an 8 Ohm output.- In office and restaurant environments it is best to distribute sound evenly. Ceiling mounted 30AE speakers in close proximity offer the best distribution and are cost effective.- Add additional speakers and coverage area to existing paging systems such as Viking models: PA-2A (DOD 485) PA-15 (DOD 486) PA-30 (DOD 489) PA-60 (D