Ported box size for 15"?
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Bronze Member Username: Cod1989Allen Park, MI USA Post Number: 25 Registered: Jun-09 | Hey guys I was wondering what size ported box would be good for a 15" Fi bl? CuFt and tuned frequency please. :D And if you can think of the numbers what would the best dimensions in inches? Thanks guys |
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Bronze Member Username: Cod1989Allen Park, MI USA Post Number: 27 Registered: Jun-09 | Ok well I looked in the archives and a guy said that 4 CuFt was good for daily use and it will be a daily driver so I went to the re audio enclosure calculator and came up with these measurements; Width: 30.5 Height: 15 Top Depth: 21 Bottom Depth: 21 Wood Thickness: 0.75 (is this the thickness for birch?) Square port width: 1.5 Square port length 2: 8 That gave me; Box Volume (Ft3): 4.058 Tuned Frequency(Fb): 20 Does that sound alright for one 15" Fi bl? And will that fit in most trunks? |
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Silver Member Username: Simple_smithLapeer, Michigan United States Post Number: 271 Registered: Dec-08 | you need more port area: for 4 cubes you'd want ~48-64 sq.in. of port area Tune it a lot higher. like between 28-34Hz and yes, .75 is the thickness of birch, but you could use MDF its cheaper The BL is recommended for 3-5 cubes https://www.ecoustics.com/electronics/forum/car-audio/579965.html this was my box build for an Fi BL 15 ^^ |
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Bronze Member Username: Cod1989Allen Park, MI USA Post Number: 28 Registered: Jun-09 | Nice box  I switched up my numbers a little; Width:: 30 Height:: 15.5 Top Depth:: 24 Bottom Depth:: 24 Square port width:: 4.4 Square port length:: 7 Which gave me this; Box Volume (Ft3):: 4.001 Squar Port Area:: 61.6 Tuned Frequency(Fb):: 32 If that looks good then I'll roll with it.  |
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Silver Member Username: Simple_smithLapeer, Michigan United States Post Number: 272 Registered: Dec-08 | yeah that looks pretty good to me |
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