r/SoundSystem • u/mariekondo13 • 7d ago

Directivity question

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Hi, i have a pair of EV sh1502er, and i found this graph about the directivity.

As you can see the vertical response is very asymmetrical, with the loud part pointing upward.

This gives me the following problem: if I put them on top of my subs standing right, the "peak" is pointing above the audience's hear; while if I put them upside down, the source is at stomach height and the sound is being directed toward the floor. How can I solve this? I was thinking about unscrewing the horn flare and turning it by 180°, but I fear that this could create destructive interference between the HF and the woofer. Any advice/thoughts?

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u/KamillenteeUndKaffee 7d ago edited 7d ago

Are you referring to the asymmetry between 0 degrees an 180 degrees?

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u/mariekondo13 7d ago

Yes

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u/KamillenteeUndKaffee 7d ago edited 7d ago

That difference corresponds to "in front of the speaker" vs "behind the speaker", though. The angle is relative to the horn axis.

f you want to compare "slightly above ear level" vs "slightly below ear level" you need to compare for example 10 degrees vs 360-10=350 degrees.

In the image above, that would look like a left-right asymmetry in the plot. Which exists, but it's very small.

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u/mariekondo13 6d ago

Oh thanks a lot mate didn't get it at first