Hey Fred, thanks for the heads up. Old habit to call it RT60.

In small rooms were supposed to refer to this metric as simply T60 as there is no reverb in household dimension rooms. You are right. I found this out from a white paper I read recently to brush up on what I need to do to establish a target of performance. This is where I came up with the "goals."

http://www.acousticfrontiers.com/wp-content/uploads/2011/10/acoustic_measurement_standards.pdf