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Old 10-10-2012, 04:19 PM
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Default hows my 4th order look?

So I just blew up a sub, and while I'm waiting for a recone I think I might try to do a 4th order. 4 OA 18's

9 sealed 18 ported. 2:1 ratio

tuned to 50

1 25" diameter port 10.5" long

Plot is attached. Just want to make sure that I'm doing this right

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File Type: jpg OA 18 plot.jpg (18.8 KB, 14 views)

Last edited by btsteinb; 10-10-2012 at 04:21 PM.
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Old 10-10-2012, 04:28 PM
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Well, the curve looks good. Im guessing that curve doesnt include vehicular considerations though, which will change it.
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Old 10-10-2012, 04:30 PM
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Well, the curve looks good. Im guessing that curve doesnt include vehicular considerations though, which will change it.
I just wanted a good start point, Damn vehicles. I'm hoping that it all works out in the end, can't decide if I want to keep the flat wall or put in the 4th.
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Old 10-10-2012, 04:32 PM
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Always changing stuff. Come take my truck for a week I'm bored with it lol
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Old 10-10-2012, 04:36 PM
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Always changing stuff. Come take my truck for a week I'm bored with it lol
Do you even have an amp? I got coil rub on one woofer. Wanna see what it can take then recone it?
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Old 10-10-2012, 04:39 PM
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Do you even have an amp? I got coil rub on one woofer. Wanna see what it can take then recone it?
Lol no amp waiting on fades test. If ur doing the bp, take ur time
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Old 10-10-2012, 04:39 PM
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Where in the eff are you going to get a 25" diameter port?
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Old 10-10-2012, 04:41 PM
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Where in the eff are you going to get a 25" diameter port?
I assumed kerfage....lol
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Old 10-10-2012, 04:44 PM
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Where in the eff are you going to get a 25" diameter port?
Work. We have pvc thats just under 25" iirc ID. Its between 24" and 25". up to 36".
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Old 10-10-2012, 04:45 PM
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Lol no amp waiting on fades test. If ur doing the bp, take ur time
I dont know how to "take time". how hard were the OA's to recone? I'm just gonna run this one till failure i think.
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