Cutoffs/crossovers for home subwoofers should depend entirely on the 
speaker system of the user and his listening room. While good quality 
bookshelf speakers in a large listening area will often call for a cutoff in 
the 125 MHz area that you mentioned, many full range towers sound best when 
cutoff at some point much lower. 
        In my case, depending upon the source material, 40 to 50Mhz has the 
most accurate and pleasing effect, while my friend across the street MUST 
have his set at 80Mhz simply due to room measurement differences. I am glad I 
am not much of a gambler, as I would have lost the deed to the ranch on that 
one!
Where I have a steeply sloped cathedral ceiling and about 6 ft deeper area, 
he has an 8'2" flat ceiling and a slightly narrower and less deep room. Same 
full range speakers. Never would have thought that big a difference would 
jump out like that.
Cheers, John
--- Maximus/2 3.01
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