If you are planning on the end of the year, before then we are going to have a pair of PB12-Ultras and and EP-600 in a pretty large room - 27x24 with 8 foot ceilings going to a 16 foot cathedral peak.

For output, a single PB12-Ultra will roughly match a single PB12-Plus/2 if you put the PB12-Plus/2 into its 20 Hz, dual ports open mode.