Ikka's SPL vs Frequency measurements are virtually identical for both trials. He also showed that the EP600 had lots of distortion at low frequencies, even more so on the second trial. He mentions that the EP600 had some good and bad things about how they implemented the DSP. Again the EP600 has far more compression below 30Hz than the SVS, that much is very clear when comparing the measurements of both products which were both down using groundplane technique.