[ezemsm444]

Hi if you tuned the ports to 35hz the subsonic filter on your amp should be realtively close to 35hz. Due to the port you increase sound intensity starting at 35hz and up (theoretically). anything lower than that can overextend your subwoofers since it will act like if it was in a free air enclosure.

Besides that, the dvom is always the best way to go. Although while setting the gain it is much easier to use acouple of test tracks like 50hz for sub gain, 500hz for midrange, just make sure they are at absolute zero with no added dbu's. since they are playing at one frequency with the same amplitude, it is much easier to set the gains because the voltage will be constant. set that as about 2 tick marks or volume marks before maximum to give you alittle play. Also when using a dvom for this step check to see if it is true rms or not. true rms will give a faster reading response as a regular dvom will give an average.