It would be more like an expanding line array I guess.
It would look like a very large version of this: In that case only attenuating high frequencies from the outer drivers would work. I still believe the driver to ear distance is the most important factor at play concerning comb filtering. One of the reasons I haven't tried any of these ideas yet is that I can't really convince myself it would work. There is something happening with that tube in front of the drivers but I'm not sure it wins from pointing the drivers more on axis yet. I've studied your STEP response and my own. yet the sides would have less obstruction, creating something resembling more of a flat wave front instead of its natural spherical one.
But the shorter, thus higher, waves would slow down in the middle path trough the foam (longest distance trough the foam). You're absolutely right, longer wave lengths would travel around it. The foam ball could stretch the total square area of high frequency reproduction to a bigger area than that point source it originally is. Not a point source every (in my case) 85 mm.
Anyway I could reduce that would help give the array an even better response.Ī ribbon has the same distance problems from the center to the outer limits, but it is seamless. There's no way around that comb filtering is happening from reading my REW graphs. So shaping the wave front might be a key here. Sort of like letting a ribbon play that frequency.Įven a ribbon would have time arrival problems in distance to one's ear if it's long enough. We would then create a wider wave front of high frequency forming a flatter total wave front. If we assume high frequency is being produced by the center cap. What I wanted from a reticulated foam ball in front of a driver is trying to slow down waves passing straight through. Granted it also has shading applied trying to "recreate" a spherical wave. Now why does the CBT array work? It is bent the other way around. Every driver at the same distance to one's ear. Why would an arced array work, I'm not talking about Keele's CBT, but the other way around. But the other side of me looks at actual distance from the driver to one's ear. One side of me wants to believe the tale of center to center spacing.
0 kommentar(er)
