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Old 07-06-2013, 05:31 PM
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Question upgraded memphis 15 enclosure?

So I have this old school Memphis Mojo 15 and I ordered a recone kit from fixmyspeaker.com thats more upgraded than the stock cone (ex. flat wound coils, triple spiders, 1800w rms rating).

I need to build a box for it but PSI cant give me T/S parameters for the new cone. They recommended a 4 cu.ft. box with a vent tuned to 32Hz (although i would like it tuned lower, maybe around 27Hz or 28Hz), they also gave a recommended port area which i think was 30-70 in^2. I'm wondering how I'm supposed to design a box without T/S parameters? I have WinSD but it wont let me start a project without subwoofer specs. I also can't find the displacement of the subwoofer, I'm guessing its around 0.3-0.4 cu.ft.?

What would you guys recommend? i tried looking through the thread with all the different box designs but the ones i found didnt list a port tuning or overall box volume.

I also want a box with the sub on top and the port facing the rear. Its going into a Chevy Tahoe.
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Old 07-06-2013, 05:47 PM
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1st off, tuning lower doesn't get "more bass". Tuning at 28hz instead of 32hz can lose about 6dB between 45-60hz {where audible bass is}.

as far as tuning and volume calcs, Calculators, Fraction to Decimal, Parallel, Series, Port Length and Volume Calculators

winISD is great, and you can use specs of any sub to get started. {just ignore the graphs when using the wrong sub}
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