How to interpret REW graphs

[Love4sound]

Hey ....are you not loosing lot of energy ?? Just for eliminating the nulls it looks like you reduced the overall SPL. May be you can target the graph 5-6 db more and still live with some minor nulls here and there ...

Not for eliminating the nulls but to level match the subs to 75 dB. Both subs gain knobs are at 12’O clock to be gain matched and hence the high spl.