Matthews Posted February 28, 2015 Share Posted February 28, 2015 (edited) Am I correct, proper phase means all woofers firing in the same direction? I have 2, 12" subs, one sitting at each end of the couch, facing the mains (Scala). They are phased at 180 degrees. The subs sound fantastic and blend seamlessly. If not for the fact that they ARE there, you would not know it. Sonically, they seem invisible. Now, and this is what I am scratching my head about. The woofers in the Scala's face the backs of the speakers. If a sub were to be placed at the front, with the mains, what would proper phase be? Scratch scratch scratch... I am confusing myself thinking about this!!! What makes sense, all of a sudden DOES NOT. Then it does again... Air flow, no, wait YES! ...wait The direction of the woofer, no, the mouth of the speaker !ARRGGGHHHH! This is driving me crazy thinking about it!!! Please help Thanks, Matt Edited February 28, 2015 by Matthews Quote Link to comment Share on other sites More sharing options...
derrickdj1 Posted February 28, 2015 Share Posted February 28, 2015 Do you have a phase control on the sub. Switch between 0 and 180 and see what sounds best and has the highest spl. The direction of the woofer in the cabinet is not a significant factor. Low bass is omnidirectional 1 Quote Link to comment Share on other sites More sharing options...
gfong Posted February 28, 2015 Share Posted February 28, 2015 (edited) The same direction meaning in or out. It is a push pull design. In phase the sub is pushing the speaker out with the rest of your speakers. If out of phase with the other speakers then the sub would pull back the speaker when all other speakers woofers are pushing forward. Same as if you had two woofers in one enclosure and you hooked one in phase and one out of phase, when one fired forward the other would pull back and you would not have much bass. Hope that helps and I explained it correctly. If not someone here will correct it! Edited February 28, 2015 by gfong 1 Quote Link to comment Share on other sites More sharing options...
derrickdj1 Posted February 28, 2015 Share Posted February 28, 2015 I use 4 subs, two in the front and two in the back of the room. On three of them the phase 0 and one of the rear ones is 180. That is why you need to see which sounds better and gives the greatest spl. Also, did you do the sub crawl to determine the best location for your 1st sub? 1 Quote Link to comment Share on other sites More sharing options...
Matthews Posted February 28, 2015 Author Share Posted February 28, 2015 I use 4 subs, two in the front and two in the back of the room. On three of them the phase 0 and one of the rear ones is 180 Oh my, this does not help LOL My confusion is at the front. Considering the Scala woofer firing. To simplify, lets say it is firing out, towards the back of the speaker. Now, with a sub right next to it, phase set to zero it will be firing "out" as well, towards listening position. Will the two cancel each other out (bass)? ...Or, is the significance of the air flow to be considered at the mouth of the Scala and not its woofer design and placement? I AM OVER-THINKING THIS AREN'T I ??? New additions to arrive soon (pair R-115's) and I just started thinking... sub crawl No, sounds like fun though Quote Link to comment Share on other sites More sharing options...
Quiet_Hollow Posted February 28, 2015 Share Posted February 28, 2015 Am I correct, proper phase means all woofers firing in the same direction? No. Sonically, they seem invisible. This is good. If a sub were to be placed at the front, with the mains, what would proper phase be? Scratch scratch scratch... This is driving me crazy thinking about it!!! Please help Proper "phase," as you are using the term in this context, would be that which ever prevents a cancelation between the subwoofer and the mains in the crossover region at the listening position(s). This is most easily investigated and resolved by the use of an SPL meter. No need to think about what's firing when and where, as nothing is a constant. Quote Link to comment Share on other sites More sharing options...
Matthews Posted February 28, 2015 Author Share Posted February 28, 2015 No need to think about what's firing when and where, as nothing is a constant. OMGosh, Thank you!!! I really AM over-thinking this whole thing. That helps ease my mind tremendously, QH Quote Link to comment Share on other sites More sharing options...
Quiet_Hollow Posted February 28, 2015 Share Posted February 28, 2015 Quote Link to comment Share on other sites More sharing options...
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