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[Juha Stark]

Hi there!

I’ve got 4xEMs and the plan was to stack 2 of them on top of each other per side. I have seen that this is fairly common way to stack them. But there is some kind of interference happening since it doesn’t sound as well balanced as when I only use one of the EMs.

Does anyone know if the sound could be improved with some kind of spacer between the tops? I guess I could EQ it but I prefer not to. These cabs sound nice just the way they are when driven active. 😊

[Art Welter]

Does anyone know if the sound could be improved with some kind of spacer between the tops?

The larger the spacing distance between the cabinets, the worse the off axis interference pattern (comb filtering) will be.
Spacing the front of the cabinets to describe a portion of a vertical arc will reduce the high frequency pattern overlap, appropriate if more than 30 degrees of vertical coverage is required.

Examples attached.

[ProSoundWeb Community]