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http://www.dvdplaza.fi/forums/forumdisplay.php?f=157 The results are up, enjoy. :)

There has been a lot of discussion about intermodulation distortion (IMD) over various Internet discussion boards. Very few IMD measurements have been done on any subwoofer, most of the discussion has been basically guessing and making overly generous assumptions related to linear excursion of...

It is said that it takes about 250ms signal to get those room modes ringing. Here (bottom) they actually show a formula for this. Trise = 0.32 T60 [s] So it's about third from T60 time. If a good decay is say 600-800ms then that 250ms would be quite correct. Now we come to TrueRTA and...

Here you can find two galleries. Links are Finnish, but just click them. My friend owns the sub, I just made the measurements and gave my opinion about the sound. :) Room is very small, less than 1500cu.f. Concrete all over and that makes it sound a littlebit boomy and undetailed. He is...