Well I have an analog rat shack meter and a test tone file from qobuz. So it's not the greatest situation, but I've done it before. It's just a chore and I probably won't do it. I can tell you this. I sold two 15" subs that I was using previously with some horns. And although the IQs don't quite dig down like they did, I don't miss them much at all. The bass is full and present when called for.