I have heard a number of pipe organ recitals in large churches, e.g. Stanford Memorial, and small, our little local 100+ year old Episcopal church has a fine pipe organ. The Velodyne HGS-15 sub gives that nearly inaudible but clearly felt sensation you get when a big pipe is opened. Though my KEF 104/2s can go much lower, I find their sound more open and airy when LF below 80 Hz is handed off to the sub.
I think what some of the earlier posters were alluding to is combination tones that can arise from the beating among harmonics, generating energy at lower (audible) frequencies. But Eldartford makes a good point: The sound pressure levels of higher harmonics are comparatively low, and combination tones from such even lower.
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I think what some of the earlier posters were alluding to is combination tones that can arise from the beating among harmonics, generating energy at lower (audible) frequencies. But Eldartford makes a good point: The sound pressure levels of higher harmonics are comparatively low, and combination tones from such even lower.
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