Todays pairings are the Tannoy VX12HP and VSX12.2BP sub. Both powered by a Lab.gruppen IPD amplifier. Below we show a screenshot from SysTune, while using the audio delay alignment tool within the Virtual EQ tab. It's almost like cheating!!!
Below we see the delay analysis tool in Systune being utilized. The top plot shows the magnitude response of the top and the sub independently, with the combined response for a chosen delay time. The options are shown in the plot below. I've chosen the "SUB" TF as the reference, since the high order low pass filter will "push it back" in time. Note we have choices of "Pos" and "Neg" summation. I chose positive, delayed the top 7.66ms, and the results are it measured as predicted. BTW - The rig sound amazing! Clean as a whistle, with superb definition across the spectrum.