Box tuning
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Hello Son Unregistered guest | can somebody tell me what the tuning and internal volume of this box is? I'm looking for about 3.5cu at 32hz external dimensions (3/4 mdf) 36x20.25x16.5 exact port dimension are 4x15 and it is 31" long it is for a 15" |
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Bronze Member Username: Mxl16Post Number: 22 Registered: Apr-05 | http://www.the12volt.com/caraudio/boxcalcs.asp |
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Hello Son Unregistered guest | i do not see a slot port calc on that page, only a round port |
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Bronze Member Username: Rayb_satxPost Number: 22 Registered: Jul-05 | what exactly is box tuning?? i see it all the time....but never understood what it means for example "box tuned to 35hz" |
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Hello Son Unregistered guest | okay, well i've been playing around with the numbers.. is there anything else I need to pay attention to when creating the box? or can I simply "play" with the numbers until i find the right internal volume and port length for the tuning frequency i want? |
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Silver Member Username: RovinTrinidad & T... Post Number: 190 Registered: Jul-05 | Play with the nos (but keeping the internal volume constant) until u find it will fit in your car's space but use the manu rec freq that your sub came . Ray - read up & get your answers from www.the12volt.com www.bcae1.com www.crutchfield.com Tutorial & faq sections . |
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Hello Son Unregistered guest | is there a good calculator online? i've been using http://www.carstereo.com/help/Articles.cfm?id=31 when i enter the volume, that is the total minus the port volume right?? so in order to keep the internal volume constant, i must increase/decrease external demensions according to the port area? |
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Hello Son Unregistered guest | bump |
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Silver Member Username: Basshead86Ocala, FL USA Post Number: 730 Registered: Aug-05 | to calculate internal box volume, you must deduct whatever the thickness of your mdf, or whatever you are using, off of each dimension for example of you are using 3/4" mdf, you would subtract 1-1/2" of of each measurement. then you multiply all of those measurements together and divide by 1728, b/c that is the total # of inches in a square foot. your box's internal volume is: 34-1/2" x 18-3/4" x 15" your box's internal volume is 5.615ft3 you might have already known that, but you also have to take into consideration the displacement of your sub in the box. hope this helps in your calculations  |
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Silver Member Username: Basshead86Ocala, FL USA Post Number: 731 Registered: Aug-05 | 1728, b/c that is the total # of inches in a square foot. *that is the # of inches in a cubed foot* 12 x 12 x 12 = 1,728 |
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Hello Son Unregistered guest | muddy, thanks but when i endter that in a calculator, such as http://www.carstereo.com/help/Articles.cfm?id=31 do i enter the 5.615 or 5.615 minus the port area? also, how do you do length when it's an L shaped vent inside the box |
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Silver Member Username: Basshead86Ocala, FL USA Post Number: 732 Registered: Aug-05 | i plugged in some #'s on that website and i think the 5.615ft3 box is tuned to 27hz. i put the correct width and height measurements in the port calculator (4" x 15"), and then played with the # of hz until i got around 31" deep. |
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Hello Son Unregistered guest | so when I enter the volume on that calculator, it's the TOTAL volume of the box (volume of the port included |
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Silver Member Username: Basshead86Ocala, FL USA Post Number: 737 Registered: Aug-05 | yeah, i think so. lol, but i wouldn't write it in stone if you know what i mean. |
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Hello Son Unregistered guest | GLASS- help |
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Hello Son Unregistered guest | bump |
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Hello Son Unregistered guest | bump |
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Gold Member Username: GlasswolfWisteria, Lane USA Post Number: 9695 Registered: Dec-03 | hmm? with what? I haven't sued that site's calculator. if it asks for gross volume, that's before sub and port displacement. net volume would be after adding in driver disp and port vol. |
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Bronze Member Username: CbrannamMount zion, Il Usa Post Number: 22 Registered: Aug-05 | the total volume of the box with the deminsions that you have are 5.639 cu.ft. @ 28.84hz is that what you were looking for? |
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Hello Son Unregistered guest | yea man, thanks... I guess that box wont work. I need 3.5cu.ft at 32hz |
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