michael hurd Posted November 30, 2007 Share Posted November 30, 2007 These devices roll off the subsonic frequencies, as well as the highly regarded Velodyne SMS-1. ART Cleanbox: -5 db at 20 hz in stock form. Lets see.... that is almost as bad as going from a 1 kw amp to a 250 w amp in the low end. At 10 hz, it is 10 db down. Graph of different approaches at the bottom of this page. http://www.hometheatershack.com/forums/diy-subwoofers/5282-art-cleanbox-frequency-response-2.html Modding the ART Cleanbox: http://www.hometheatershack.com/forums/diy-subwoofers/5282-art-cleanbox-frequency-response-3.htmlhttp://www.avtalk.co.uk/forum/index.php?t=msg&th=18235&start=0&rid=5915&SQ=1182931696 Quote Link to comment Share on other sites More sharing options...
Guest " " Posted November 30, 2007 Share Posted November 30, 2007 Michael, I can think of a few senerios where having a roll off below 20hz would be a good thing a. Few speakers can reproduce below 30hz. Having an amp roll off below 20hz will minimize the amount of watts being converted to heat. b. Folks who use turntables will have less feedback rumble. Quote Link to comment Share on other sites More sharing options...
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