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sweety
LosIsATool 5,000+ posts
CarAudio.com Veteran
2 - 2.5 would be good.
*OFFICIAL* Free Ported Box Plans (56k NO!!) - Dodge SRT Forum Pick one that works for you
http://www.the12volt.com/caraudio/boxcalcsm.asp
Use this to calculate volume. Yes it would be the same.
Use this to calculate volume. Yes it would be the same.
OP
sweety 10+ year member
Member
- Thread Starter
- #6
Many thanks, i've used that a few time when building enclosures for myself & for my Son's last build 3x 12" subs in his old car & been happy with the results as i'm no enclosure designer but have only used round ports before but this time I think he's wanting a slot port which is harder for me to work out
Jeffdachef 5,000+ posts
Gunz That Turn on Nunz
If its a slot port, then the tuning would not be the same. If its an aero, it would depend on how close you were to the rear wall. If you are the aeroport's diameter away from the rear wall, those would count as your port length also, if you change that you might raise the tuning a few hertz.
Jeffdachef 5,000+ posts
Gunz That Turn on Nunz
yeah because you have a different height. You'll have a different cross sectional area and it'll throw everything out of proportion. You'll need a smaller width and readjust the port length etc. Use WinISD, torres box calculator to help crunch your numbers.
OP
sweety 10+ year member
Member
- Thread Starter
- #10
Thanks for the help so far guy's, I've tried using winISD but just can't get past adding the driver spec's in as it never seems to save them
maybe i'm just getting to old for this. I've had a go at trying to work it out on paper but not sure if i've worked it out right or not but here go's 32.5"wide x 16"high x 13"depth with a 2.5" slot port 37.75" long (down the centre of port) should give me a volume of 2.11ft^3 & tuned to just under 33Hz ?
maybe i'm just getting to old for this. I've had a go at trying to work it out on paper but not sure if i've worked it out right or not but here go's 32.5"wide x 16"high x 13"depth with a 2.5" slot port 37.75" long (down the centre of port) should give me a volume of 2.11ft^3 & tuned to just under 33Hz ?
Jeffdachef 5,000+ posts
Gunz That Turn on Nunz
You are actually at 1.6 cubic feet tuned to 37hz with that and you actually have too much port area. Narrow the port width to 2 inches and cut port length to 30 inches, you'll have 2 cubic feet at 33hz and you'll have the proper amount of port area per cubic foot.Thanks for the help so far guy's, I've tried using winISD but just can't get past adding the driver spec's in as it never seems to save them
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