Why do you say "wasted my money"?I would be willing to bet "haven't exploited the device as more accurate. MLK's comment about "little difference" can be taken with a grain of salt since he's rather a newbie to active systems. In addition to active crossovers I have a hardware RTA, a software RTA, two measurement mics, a rack mount SPL meter and two hand-held SPL meters. You need to use some reference signal to get the thing in line - it ain't going to happen by ear.
Check out the link below: