Old thread. Re-reading some of my previous posts, I would like to update my experiences with the SMS-1 since then. I have changed subwoofers to a pair of Seaton Sound Submersives. I've also acquired a room acoustical analysis program called xtz Room Analyzer:http://www.xtz.se/produkt.php?allman...kt=41&eng=true
This program can measure frequency response as well as time response. I am using Audyssey MultEQ XT and then the SMS-1 to tweak the Audyssey result to my liking.
The following is my before and after response:Before:After:
(Note that these curves are a 3-seat "averaged" response.)
Obviously the FR is flatter after the EQ's were applied, and the SMS-1 is primarily responsible for that. However, Audyssey had a huge effect in the time domain response as seen in the (small) "Time/Frequency/Magnitude" graphs in the upper right corners. These depict the time response in the room, the "overhang", if you will. Note how much less overhang there is across the entire bass spectrum.
I ran Audyssey first, with the SMS-1 set for "flat" response. This allowed Audyssey to account for the latency of the SMS-1 and set the distance setting appropriately. Then, when Audyssey was finished, I used the SMS-1 to fine tune the FR.
The sound is fantastic, definitely the best, tightest, most tuneful bass I've ever had in my room. For music, the sealed Submersives mated with my sealed Atlantic Technology 8200e speakers provide a seamless blend at the crossover, (100 Hz), and bass that just fills the room without bloat or boominess or muddiness. I attribute this to the decreased reverbation time provided by Audysey. For movies, the subsonic extension of the Submersives coupled with their massive output capabilities provide all the shaking, rattling and percussiveness you could want.
For a long time, I was leery about "cascading" multiple EQ's. I have gotten over it.