SVS SB16 compared to JL Audio F113v2

[Pampero]

Originally Posted by crwilli

The JL Audio subs have an electronic delay in them that requires they be closer to you. However, you can speed up their sound by using the phase adjustment..

I don't believe there is a delay in the JL electronics package. Adjustable phase is not the same as time delay and won't compensate for a time offset. Barry mentions this in his tutorial. You are right in that you are trying to align the wavefronts by using phase control but you will still won't have corrected any time offset. I agree that getting phase and level dialed in using the approach Barry Ober suggests (shooting for the null by reversing polarity) is a simple and accurate way to get phase and level adjusted in one swoop. This is an extremely fiddly adjustment. Extremely fiddly!

If you have an SPL meter, center it precisely between the sub and the main speaker closest to it (having reversed polarity to the main as CR suggested). I think it's more accurate than listening for the null, which can be tricky in some circumstances, especially if the sub is fairly close to the main.