Originally Posted by Larsfan28
Congrats. on the second sub ! I recently got a second XV-15 as well,one thing i did was move the new sub's phase control to half way up and i noticed a difference.You might try that when you have a chance to watch a movie with a lot of bass,cause i'm wondering if its just my set up or not lol.
Getting your subs "in-phase" with the phase control knob should be a bit more of a scientific procedure than that.
First, you need an SPL meter (an SPL meter app on your phone will work in a pinch for this though).
Next, play some pink noise through your subs (you can use the sub cal noise from your AVR).
With the SPL meter at the MLP, adjust phase on one sub only until you get the highest SPL at the MLP. A friend to turn the phase knob is helpful with this step.
Done, subs are now "in-phase".
Depending on how large of a discrepancy there is in the distance of sub 1 and sub 2 to the MLP, you may end up at "0", "180" or somewhere in-between.
NOTE: if you have an AVR that can separately set distances for dual subs (i.e. Audyssey XT32 + SubEQ HT), you don't need to mess with phase on the subs at all.