@ajc9988 I have thought about it. And maybe someday. But honestly, that is probably way bigger than I would ever need. I have one mx15-22 and with the four 12’s it isn’t necessary to have anything else. Don’t get me wrong, you still want subwoofers with the Audience 212, but since these play full-range (in my room) they help pressurize the room. Which adding that SD, even not at high volumes (compared to the subwoofer) is an incredible increase. I have enjoyed it.