Thank you for a very nice review. I have 2x PB-200 pro myself and am currently trying to fiddle with placement and eq to get a flat response, using REW for measurements.\nI would like to use your graph, the one showing Frequency response for both ported and sealed mode as a reference for my own measurements. Could you perhaps inform, if you are using REW and what kind of smoothing you have used, at what gain, ect. so I can replicate in my setup?\n\nRegards\/Michel\n\nThe measurements for that graph were done using REW. The graphs are unsmoothed. Those tests are done with the subwoofer gain at maximum. \n\nI wouldn't be so concerned about trying to duplicate the setup for that testing if I were you. The most valuable part of that testing was acoustic the conditions it was performed in and the testing methodology. That is only good for capturing the anechoic response of the sub. Those aren't the methods that you want to use to capture the response of the subs in your room at your listening positions. All you really need to do is try to get the flattest response that you can from 20Hz to 100Hz at your listening positions. \n\nRemember just to use EQ to take down peaks and use positioning to shore up nulls. Don't use EQ to bring up anything but very mild dips in the response.