palesha wrote on Mon, 11 July 2005 10:08 | I want to build one subwoofer with 18" subwoofer for long throw application. I am thinking to build one of the style of the picture attached. The front & back both r with horns. Is this practical to do so? The suggestions & positive remarks welcome.
| If what your hoping to achieve is a subwoofer with directivity control, the way a horn would control the directivity of mids or highs, it ain't gonna happen. Horn loaded or front loaded, at sub frequencies a single box is omni directional. You can gain directivity by making an array of boxes. According to Dave Gunness of EAW a horn loaded sub with a large enough mouth area can simulate what we traditionally think of as long throw because there is a smaller gradient in SPL between a point close to the mouth and a point far from the mouth.
Mac
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