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High Efficiency Speaker Asylum Need speakers that can rock with just one watt? You found da place. |
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High Efficiency Speaker Asylum Need speakers that can rock with just one watt? You found da place. |
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In Reply to: RE: Built-in woofers... posted by Paul Eizik on October 5, 2023 at 09:30:59:
Those rear chamber calculations don't work, because they don't consider what's actually happening. The mass of the air in the horn and front chamber adds to the Mms of the driver, which pushes the driver plus horn system resonance down. When that resonance is below Fc sensitivity at and near Fc is reduced. There are two ways to address this. One is to start with a driver that has Fs considerably higher than Fc. The other is to make the rear chamber small enough to push the driver + horn resonance up to where it should be. It used to be a trial and error proposition, but using HornResp software that's no longer the case. The same applies to throat and mouth area and every other aspect of horn design.
With the 2241 in a maximally flat maximum sensitivity horn the throat area would be 42 sq in, the rear chamber 1.5 cu ft. But both of those figures are dependent on the dimensions of the horn and front chamber. If you change those you change everything. That's where trial and error is problematic, but software modeling makes it easy.
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Follow Ups
- RE: Built-in woofers... - Bill Fitzmaurice 11:40:57 10/05/23 (1)
- RE: Built-in woofers... - Paul Eizik 10:52:44 10/06/23 (0)
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