SPL meters are nice, but my Pioneer 1015 pretty much nailed the level settings for my speakers and sub. I used an SPL meter and test tone CD to check out the response over frequency in my room. My sub has more tweaks to it than yours will, so my process made more sense in my situation than in yours. You could do it for the phase setting or to fine tune location of the sub, but for just getting the output level correct - I think that your Elite will work just fine. You can always set the level according to your own tastes, too!