Harman Kardon SoundSticks Subwoofer Acoustic Chamber

The Harman/Kardon SoundSticks Subwoofer consists of a specially designed funnel-like part shown above. As you can see, the funnel has holes which allow the sound to pass through it and into the acoustic chamber, which is the top-half of the subwoofer enclosure. However it also funnels the sound out through the funnel tube that forms the centre hole.

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