RF4LIFE Posted March 26, 2012 Report Posted March 26, 2012 Can anyone help me figure port area and length for a 15" sub in a 5ft^3 box tuned to 33hz? I have read many different ways and "how to"s I'm just getting a little confused. I have found an 1/8 wavelength To be the best on paper but dose anybody know what they sound like? My numbers for the 15" woffer @ 33hz 82.5in^2 ((pi*r^2)/2) 51.36 inches long (1130/hz/8*12) Quote
SnowDrifter Posted March 26, 2012 Report Posted March 26, 2012 Dimensions? Quote ~~~~~~~~SAY NO TO PHOTOBUCKET~~~~~~~~ Snow's DD-1 tracks here: https://www.stevemeadedesigns.com/board/topic/167433-snows-dd-1-tracks/ My take on OFC vs CCA: https://www.stevemeadedesigns.com/board/topic/110381-things-that-piss-you-off-in-the-car-audio-world/?do=findComment&comment=2461444
RF4LIFE Posted March 26, 2012 Author Report Posted March 26, 2012 I don't have any yet, once I get the port then I will make it fit Quote
RF4LIFE Posted March 26, 2012 Author Report Posted March 26, 2012 I just want to know if my formula is correct? Or is it completely wrong? Quote
SnowDrifter Posted March 26, 2012 Report Posted March 26, 2012 The formula you are using is for calculating a standing wave - like for use in a t-line enclosure. Not a conventional ported box Go download Torres calculator. That should make it easier for you Quote ~~~~~~~~SAY NO TO PHOTOBUCKET~~~~~~~~ Snow's DD-1 tracks here: https://www.stevemeadedesigns.com/board/topic/167433-snows-dd-1-tracks/ My take on OFC vs CCA: https://www.stevemeadedesigns.com/board/topic/110381-things-that-piss-you-off-in-the-car-audio-world/?do=findComment&comment=2461444
RF4LIFE Posted March 26, 2012 Author Report Posted March 26, 2012 Can I use a stinging wave? Won't it be a louder box at the cost of having a larger enclosure? Quote
RF4LIFE Posted March 26, 2012 Author Report Posted March 26, 2012 My question is can I use it in a best of both worlds, (larger sound then a ported but smaller enclosure than a t line) or is it strictly used for T lines only Quote
SnowDrifter Posted March 26, 2012 Report Posted March 26, 2012 I see what you want to do now See this thread http://www.stevemeadedesigns.com/board/topic/1828-quarter-wave-t-line-tutorial-updated/ Quote ~~~~~~~~SAY NO TO PHOTOBUCKET~~~~~~~~ Snow's DD-1 tracks here: https://www.stevemeadedesigns.com/board/topic/167433-snows-dd-1-tracks/ My take on OFC vs CCA: https://www.stevemeadedesigns.com/board/topic/110381-things-that-piss-you-off-in-the-car-audio-world/?do=findComment&comment=2461444
RF4LIFE Posted March 26, 2012 Author Report Posted March 26, 2012 I've read it but a t line is too large for what I have to work with, I just want to know if anyone has used this formula for anything like a port on a reg ported box Quote
SnowDrifter Posted March 26, 2012 Report Posted March 26, 2012 Don't mix t-lines and normal ported boxes. They are 2 fundamentally different designs. Choose one and build it, but don't combine. Simple as that. Quote ~~~~~~~~SAY NO TO PHOTOBUCKET~~~~~~~~ Snow's DD-1 tracks here: https://www.stevemeadedesigns.com/board/topic/167433-snows-dd-1-tracks/ My take on OFC vs CCA: https://www.stevemeadedesigns.com/board/topic/110381-things-that-piss-you-off-in-the-car-audio-world/?do=findComment&comment=2461444
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