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Old 09-12-2012, 08:16 AM
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Default 4th order calculator? DD 9515's

I am needing a good 4th order calculator to design an enclosure for 2 9515's. I have 36w x 26d x 24h to work with. Comes to a around 11 cubes I think. If not a fourth, then maybe some advice on what might be the optimal. Trying to go for SQL here and possibly get around that 50 mark. The guy said he will be running about 5k to them.

Thanks in advance for any help.
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Old 09-12-2012, 11:57 AM
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Start reading. Everything you need is there. Might take a couple hours tho to understand it. WinISD is the reccomended program, used in conjunction with a wt3.
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Old 09-12-2012, 11:58 AM
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Im pretty sure they have a low qts, so a quasi tuned 6th would be your best option.
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Old 09-12-2012, 12:03 PM
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Originally Posted by btsteinb View Post
Im pretty sure they have a low qts, so a quasi tuned 6th would be your best option.
Agreed. DD's have way to stiff of a suspension to do well in 4ths. 6ths and ported boxes is where they shine. That being said, 11 cubes is too small for a good 6th. If I was you, I would just do a ported box.
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Old 09-12-2012, 12:14 PM
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im just tuning in and curious so a 4th order wont have as much potential as a 6th?
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Old 09-12-2012, 12:39 PM
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Not enough room for a bandpass IMO. I would build an enclosure 10cu ft net with 160 sq in of port and tune it to your liking. You won't be disappointed with that box and neither will the DD's.
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