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Old 12-21-2012, 03:15 PM
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Default 4th order design for a cvr 18

Wassup fellas, done plenty or normal ported alignments before but im trying a 4th for the first time. The woofer is an old school cvr 18 and we only have room for a 2:1 ratio. right now im looking at 6.2 cu ft tuned to 45 hz. And the 3.2 cu ft for the sealed section. Does this sound about right to you guys? ill double check with win isd when i get home but im at work right now
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Old 12-21-2012, 05:15 PM
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and i also forgot to mention that im doing 12 in per cu ft on the port and the woofer will be on just about 1k
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Old 12-21-2012, 05:49 PM
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For your port, do half cone area about.
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Old 12-21-2012, 06:09 PM
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Quote:
Originally Posted by A.Smo View Post
For your port, do half cone area about.
so youre saying about 9 sq in?
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Old 12-21-2012, 06:16 PM
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Quote:
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so youre saying about 9 sq in?
area of the 18" sub divided in half. so 127 square inches for the port.
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Old 12-21-2012, 06:38 PM
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I would go 3 cft max for the 18" on sealed side and rest ported to 47hz
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Old 12-22-2012, 02:12 PM
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I would go 3 cft max for the 18" on sealed side and rest ported to 47hz
Well i did 6.0 cu ft on the ported side because that was the max according to spec and then just tried to get 3.0 for the sealed side to make my ratio work out. Im just curious to know if u guys think this work well, sound pretty good and of course not destroy the woofer lol
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Old 12-22-2012, 02:49 PM
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It will work well because a lot of the old school drivers were high qts design. I wouldn't tune much lower than 48hz
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