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Box Tuning

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Old 04-17-2004, 09:18 AM
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I am going to make a ported box for 2 12" Alpine Type R's.
I was thinking around 3.5 - 4 cu ft shared chamber tuned to around 40 hz.
Is 40 hz too high? Should i go lower?
This is not going to be for any competitions or anything like that.
If anyone could comment on the box size and tuning i would appretiate it.
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Old 04-17-2004, 09:37 AM
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30 to 35hz
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Old 04-18-2004, 02:31 PM
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The lower the better, around 35hz is a great tuning frequency for most cars, because it's almost an octave away from the resonant frequency of the vehicle, giving you a flatter response.
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Old 04-18-2004, 02:39 PM
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i'm tuned to 32 Hz [img]smile.gif[/img]
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Old 04-18-2004, 02:49 PM
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cool, how does it sound?
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Old 04-18-2004, 07:09 PM
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Thanks guys, 35 Hz sounds like a plan to me.
But would anyone recomend sealed over ported for two type R's? Someone told me that they sound better sealed rather than ported. Is this true?
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Old 04-18-2004, 07:13 PM
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model SWR-1241D
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Old 04-21-2004, 02:54 PM
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Matter of prefference:
sealed= +higher power handling, flatter response
smaller box, quicker bass. good for
rock, metal, country, most music.
-not as loud
Ported= +boomier, more efficient, 'sounds' deeper
better for rap, dance etc.
-slower transient response, bigger box.

Type R's sound great in both, but if you have under 300 watts, go ported
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