Link: https://longkft.hu/audioblog/diy-virtualis-fold/
There's an English translation.
this post was submitted on 15 Dec 2025
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My friend told me this story from his antique radio club:
One club member is an audiphile and a former vibrations engineer for automotive companies. He disassembled his speakers and arranged custom housing for the drivers such that, based on his preferred listening spot, the peak of an average waveform from every driver would synchonize exactly at the spot where his ears should be. This, according to him, produces an unbeatable sound. We're talking about opening a speaker and moving its tweeter, like, half a millimeter back.
No, I don't understand how this is supposed to work, let alone consistently.
That would work perfectly if he listened to music consisting of a single tone of different volumes…
Only way that could make any sense would be if he was trying to make sure the speakers were in phase. If you’ve ever had one wired backwards there’s an exact spot where you can get them to cancel out, it feels bizarre. But you don’t need to adjust the cones, just wire things the right way lol.