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Stacking or flying the subwoofers in a vertical array focuses the low frequencies forward to a greater or lesser extent depending on the physical length of the array. Longer arrays have more directional effect at lower frequencies. The directionality is more pronounced in the vertical dimension, yielding a radiation pattern that is wide but not tall. This helps reduce the amount of low frequency sound bouncing off the ceiling indoors and assists in mitigating external noise complaints outdoors.

More speaker more sound.. May I know the speaker size and its prize with company.
Voltage is most important. How nice to dance at party.....

Have a good time...

Array is really about using what we already know about loudspeakers. The Digital Vertical Array is a compact. The vertical plane a very large subwoofer array is required.

The Subwoofers is a one type of the loud speakers.Sub-woofer process in band-pass configuration.Textured scratch resistant paint finish.