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30th September 2007, 01:31 AM
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#1 |
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diyAudio Member
Join Date: Jan 2004
Location: Left Coast
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Unibox/WinISD Port Size Discrepancies
Hello,
I have 4 Tang Band W4-656SB's that I intend to use for modest surround speakers (1 per enclosure). Modelling in Unibox gives me the following: Std Design: 3.4 litres with a port of 4.27 cm dia & 94.14 cm length Design by Vb, Fb & Q: 5.0 litres with a port of 4.04 cm dia & 41.71cm length Modelling in WinISD gives me 3.0 litres, with a port of 3.81 cm dia & 14.78cm in length... What box volume/port dimensions should I build to, given these discrepancies?? Thanks for any help. HTR |
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30th September 2007, 02:03 PM
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#2 |
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diyAudio Member
Join Date: Jun 2002
Location: USA, MN
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The first two are way off. I have no idea what you are plugging into that program, but I cannot duplicate your results.
The last one will work, but is perhaps too small and tuned too high, IMO. Make the box 4L and the port 1.5" Dia x ~21cm long (or use a PR) and you should be OK.
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30th September 2007, 06:34 PM
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#3 |
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diyAudio Member
Join Date: Jun 2006
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Norcad |
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