Subwoofer tweaks

Hello, I also have the Auralex SubDude under my MK 70s (push/pull) in a frame house. I've been bouncing around the idea to top off the cabinets with 5/4 granite & see if there's any improvement. I'll be back! 

You didnt mention what kind of floor your sub is on but in my room, on a suspended hardwood floor, I found that decoupling with Sorbothane half sphere footers was a huge improvement. Also adding weight on top of my Sub (REL T/7X) in terms of a 15lb slab of marble with thick felt between them seemed to help too. Faster, tighter, cleaner. 

@9rw It's like when you get mayonnaise on your watch,

@cmach   My two DD -12 Plus rest on birch plywood dolly's with extra-soft casters. The dolly's are topped with four inch layers of dense latex foam and approximately three inch layer of closed cell old Morey Boogie board foam. 

I needed to rerun the Auto EQ and slight manual preset tweaks to maintain desired frequency parameters.

The decoupling greatly reduced the extra low frequency transmission throughout our dwelling while actually providing a more desirable presentation. I'd say elevating the units may have played a roll in the presentation itself. 

Having owned a DD-18, I recall the manual didn't convey the importance of room positioning.  

The manual made mention of walking around room with the mic and noting the greatest frequency spike while viewing the graphic display during the Sweep Tones, (page 23?).

With the DD Plus the subwoofer crawl is step one out of the box. Proper room positioning requires far less use of processing parameters and noticeably better synchronization with the room and the main speakers. Your DD is still a great unit.

@secretguy - you responded to @9rw’s post from 18 years ago, better late than never, I guess