Join Date: Feb 2003
Location: Seattle, WA - Eastside
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My ultra 12 arrived today, I quickly unpacked and set it up in a corner of my room. The sub is really very nicely finished, was well packed, and looks to quality built too.
I did some quick in-room measurements using the Real Traps test tones. For reference the room is 1800 cu. ft., carpeted, and closed with windows on two sides with full blinds. I played the tones from 10Hz up through 69Hz. I wasn't expecting much below 25Hz or so but what I found seems both odd and disappointing. From 33 - 69Hz, apart from what I assume is a room acoustics issue around the 50Hz mark, the results are relatively flat. But at 33Hz it drops off like a rock, down 20db from 33 to 29Hz. How can this be? I could understand that kind of rolloff lower down, but at 33Hz and a full 20db drop across only a 4Hz range?
It strikes me as odd and I am definitely disappointed with these results but don't really know/understand the cause. I only experimented with placement in and near one corner so maybe results will be better with the sub placed somewhere else. Could that much of a drop starting at 33Hz be a room acoustics issue or am I just seeing the limitations of this sub?