Schu Posted April 5, 2013 Share Posted April 5, 2013 this null idea... will rotating the sub in position help with that? I have not seen many sub placement pictures where the sub is firing perpendicular to listening position. Like I has said, my system is tuned from my LP... I just notice that off axis/perpendicular there is MUCH MORE db's. I mean even if I did rotate the sub, all I wold be doing is lowering the gain on it. Quote Link to comment Share on other sites More sharing options...
derrickdj1 Posted April 5, 2013 Share Posted April 5, 2013 this null idea... will rotating the sub in position help with that? I have not seen many sub placement pictures where the sub is firing perpendicular to listening position. The nulls are a function of the room modes. Moving the sub orientation will not get rid of the modes, they may be shifted to another location. The additional sub will smooth out the room's overall frequency response and increase the dynamic headroom. The easier the subs work=decrease cone movement=less distortion=cleaner bass. The example I gave was based on the log scale and the math was pretty straight forward. Scappy is correct, it is a factor of x10 to double the power and 10 db to doulbe the precieved volume which I always have to try an keep straight in my memory, lol.[] Quote Link to comment Share on other sites More sharing options...
derrickdj1 Posted April 5, 2013 Share Posted April 5, 2013 Youthman, use Freemake.com-Freemake video decorder which is freeware that is will convert internet videos to an mp3 or another format. http://www.freemake.com/ Quote Link to comment Share on other sites More sharing options...
CECAA850 Posted April 5, 2013 Share Posted April 5, 2013 Ideal placement for non-colocated subs is one directly in front of you and one directly behind you. I would assume that one on either side would work as well. http://www.harman.com/EN-US/OurCompany/Innovation/Documents/White%20Papers/multsubs.pdf Quote Link to comment Share on other sites More sharing options...
CECAA850 Posted April 5, 2013 Share Posted April 5, 2013 Be careful with your placement and use an SPL meter when you set them up. You can actually have less bass at the seated position when adding a second sub compared to using a single sub. Setting up 2 subs (when not stacked) to sound RIGHT takes time and patience. Don't get discouraged during the process. The end results are worth it. Quote Link to comment Share on other sites More sharing options...
ivanhurd Posted April 6, 2013 Author Share Posted April 6, 2013 The 4311 uses Audyssey for both subs (SubEQ), so I'm hoping that will do it's job. Also, front and back or side by side won't work unfortunately due to space. I'm going to have to do front R/L corners. Quote Link to comment Share on other sites More sharing options...
derrickdj1 Posted April 6, 2013 Share Posted April 6, 2013 I'm going to have to do front R/L corners. Audyssey will take care of the front subs in the corner. It applies the EQ at the last step which favor coner placement. Quote Link to comment Share on other sites More sharing options...
Scrappydue Posted April 6, 2013 Share Posted April 6, 2013 this null idea... will rotating the sub in position help with that? I have not seen many sub placement pictures where the sub is firing perpendicular to listening position. Like I has said, my system is tuned from my LP... I just notice that off axis/perpendicular there is MUCH MORE db's. I mean even if I did rotate the sub, all I wold be doing is lowering the gain on it. if your LP is outin the middle of the room and when you move to a different spot on the room it will almost always be louder. Just seems like bass travels around the walls to me. At least in my experience with placements. I've only been to a couple home theaters where being out in the middle of the room had extreme output. And they all had diy subs with gobs of power and multiple 15 or 18 inch woofers. Quote Link to comment Share on other sites More sharing options...
Shodrewken Posted April 7, 2013 Share Posted April 7, 2013 Ivan, congrats on your second sub! While my wife and I were visiting her bro in Colorado Springs, we got a chance to listen to the SW-115 at a mutual friends house, man that thing pounds! Got a chance to listen to some music, and play some games with it, and I gotta say I walked away pretty impressed. The friend had a system close to the one you have with the only exception he had rs-42's for side surrounds, but still great sounding system. Take the pics once you get your new toy! Quote Link to comment Share on other sites More sharing options...
ivanhurd Posted April 7, 2013 Author Share Posted April 7, 2013 Thanks, and will do =^) Quote Link to comment Share on other sites More sharing options...
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