I've started a new 4 way project and I am evaluating the mid bass options. I own a pair of both 2123h and 2012h 10" drivers. I plan to use the 2245 on the low end and cross the 10' over to the 2450H mounted on the 2380A horn. I do not have any experience with the 2012. Any recommendations? The application is Music reproduction in a large living room.