Positioning two subwoofers

[JOHN FICKEL]

I have two Klipsch R-115Sw subs in opposing corners. My living room is L shaped. One sub is in the front left corner while the other one is in the right rear corner. They're both approximately 10 feet away from the listing position. Now both subs are front firing. Basically both subs are firing into the room towards each other. When I run YPAO the levels seem weird. Both subs are at 9 o'clock. First run of YPAO my front sub is leveled at +3 1/2 And rear at -3 1/2 . Another test run results in front sub at +4 1/2 and rear sub at -4 1/2 . Both Phase controls are normal. If I put one sub out of phase The levels seem more normal meaning +0.5 front and rear +2.5. So now it seems to me that it actually leveled them more accurately. So now i put both subs phase back to normal and I turned the back sub so it wasn't firing into the room like the front one is. Now the levels ended up being +1.0 and +1.0. If either subs phase is reversed I get considerably less bass. I can't put both subs in the front. Do you think that my subs are canceling each other when they're both firing into the room ? And having the one turned away so it's not firing directly towards the other one seems to be way better. What would happen if you took a front firing subwoofer and turned it towards the wall ? Basically taking the back R-115 and doing a 360 essentially putting the subs driver Facing corner ? Or do you think just turning the other sub away should be enough ? Basically now the back subwoofer is just turned firing to the front of the room Instead of towards the middle of the room. Thank you for all your help

 

[rojo]

@JOHN FICKEL There could be some cancellations of certain frequencies. The best way I know to find out for certain would be to grab a calibrated measurement mic and measure using Room EQ Wizard. Position, measure, reposition, remeasure, change the phase of one sub, remeasure, and go with the configuration that gives you the fewest dips. The peaks can most likely easily be flattened by YPAO.

You could order a UMIK-1, perform the measurements, then resell the UMIK-1 on eBay and easily make back most (if not all) of your money. Others would be willing to buy it from you at near full price just to avoid having to wait for shipping from China. Or just hang on to it. A measurement mic is nice to have from time to time to answer questions such as this.

 

[JOHN FICKEL]

@JOHN FICKEL There could be some cancellations of certain frequencies. The best way I know to find out for certain would be to grab a calibrated measurement mic and measure using Room EQ Wizard. Position, measure, reposition, remeasure, change the phase of one sub, remeasure, and go with the configuration that gives you the fewest dips. The peaks can most likely easily be flattened by YPAO.

You could order a UMIK-1, perform the measurements, then resell the UMIK-1 on eBay and easily make back most (if not all) of your money. Others would be willing to buy it from you at near full price just to avoid having to wait for shipping from China. Or just hang on to it. A measurement mic is nice to have from time to time to answer questions such as this.

Thank you or responding sir! I can tell you from experimenting it made a huge difference not having the subwoofers directly firing at each other. I can't even explain in words how much better my system sounds.... it sounds like now like the mains are working with the subs. I have the RF-7ii's. The back sub is now firing to the front of the room , instead of kitty corner firing to the middle of the room towards the other subwoofer. I agree I'd love to take actual measurements. Thanks again

 

[lovinthehd]

I'd read of various effects of orienting drivers into walls rather than into the room, currently running such a setup. Noticeable difference? Not really but I'd lean towards the side of it didn't harm bass response either. Didn't measure the difference tho....didn't seem worth the time.