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| Date: |
December 06, 2005 at 10:24:49 |
| From: |
Bill Fitzmaurice, [pool-70-109-168-124.man.east.verizon.net] |
| Subject: |
Re: 19dB ! |
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Good question, as both the horn length and mouth area of the WO are far too short/small to load to low frequencies. In a car or in a corner it will probably work pretty well, but a half-space anechoic plot would proove very disappointing.
The apparant 19dB gain would be almost astounding even in a full size horn; achieving that from a flared port or a short back horn absolutely indicates a resonance peak, not broadband gain. You can model both in HornResp as backhorns. A straight duct with a flared end is done by (following the instructions) modeling the first segment as a non-expanding cylindrical section, and the flare as a second segment with a normal expansion. The front chamber volume trades places with the rear chamber, while the rear chamber volume is set at 0. Use the backhorn tool to add in the frontwave output.
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Posted with TalkShop version
2.76 BETA |
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