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Sometimes you will see a tweeter offset from the centerline of a baffle. This asymmetric mounting is also a diffraction control technique. By offsetting the tweeter, the distance from the center of the tweeter to the left edge and the right edge are different distances. This means that the frequencies whose wavelengths correspond to these distances are different too. By offsetting these frequencies you can sometimes smooth the on-axis diffraction signature because the distances to each edge will produce ripples at different frequencies. If carefully designed, these can combine to smooth the response. When using this technique it is important to note that the diffraction signature is asymmetrical too and there is a greater difference in the response whether you move off-axis to the left or to the right compared to a centered tweeter that is symmetrical. Similar to offsetting the tweeter is the technique of “toeing-in” the loudspeaker so you are not directly on-axis. This has a similar effect to offsetting the driver because your off-axis position changes the geometry of how the sound recombines after diffracting off of each edge.
these are available again.
Who has the speakers now? You, or the original owner?
