iwannabeloud Posted May 6, 2013 Report Share Posted May 6, 2013 Is the port volume not height * (width+.75) * length or physical port length???? 17*7.75*20= 1.52ft^3 or 17*7.75*19.25= 1.48ft^3 I don't put images in my signature to let people know I mean business. Link to comment Share on other sites More sharing options...
Jessica Posted May 6, 2013 Report Share Posted May 6, 2013 port volume is basically port displacment. So the port including the walls. Rest in peace, walled 87 accord build log 03' Corolla build with AA Mayhem inside. My super random youtube channel and terrible camera work. Wiring comparison by CaptainzPlanetz Wire and fuse guide by Guest SyKo13 Link to comment Share on other sites More sharing options...
Jessica Posted May 6, 2013 Report Share Posted May 6, 2013 also, i screwed up and figured the port at 30". So, that being said, at 20" i get 1.61cuft for port displacement. and i get 8.37 net before subs and bracing. Sorry bout the other post. My bad Rest in peace, walled 87 accord build log 03' Corolla build with AA Mayhem inside. My super random youtube channel and terrible camera work. Wiring comparison by CaptainzPlanetz Wire and fuse guide by Guest SyKo13 Link to comment Share on other sites More sharing options...
SnowDrifter Posted May 6, 2013 Report Share Posted May 6, 2013 also, i screwed up and figured the port at 30". So, that being said, at 20" i get 1.61cuft for port displacement. and i get 8.37 net before subs and bracing. Sorry bout the other post. My bad Good to know! I'm still trying to figure out how Torres got 1.7cuft for port displacement and 8.6 for net volume after displacement. Makes me question if this program is as good and accurate as we think it is. BIG difference between the previous and current version. The current version is much closer, but there is still a discrepancy I'm getting 8.68 net after all displacements (20 - 3) * (40 - 1.5) * (30 - 1.5) = 18653.25 cuin 18653.25 cuin / 12^3 = 10.79 cuft 10.79cuft - 1.61cuft port - .5 woofer = 8.68 cuft net Newest version of Torres brings back 8.60. Better than the old Torres which says 8.11cuft. But I still wonder where that .08cuft comes from ~~~~~~~~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 Link to comment Share on other sites More sharing options...
Jessica Posted May 6, 2013 Report Share Posted May 6, 2013 i think there is a theory with ports that you add half the width of the port, to the port volume. If that is true and if torres does that math then maybe that is where the loss is? I don't know for sure if that theory is true or not. Anyway, hopefully Torres can chime in and gives us some ideas. Considering your port has no bends and is simple i don't know what is going on. Maybe the way i laid out the port isn't exactly how torres figures it. I'm at work right now so i can't double check my sketchup. Rest in peace, walled 87 accord build log 03' Corolla build with AA Mayhem inside. My super random youtube channel and terrible camera work. Wiring comparison by CaptainzPlanetz Wire and fuse guide by Guest SyKo13 Link to comment Share on other sites More sharing options...
Ramon Lyn Posted July 4, 2013 Report Share Posted July 4, 2013 Chris, thanks for the great app but I have one question and I will need to refer to your help section images in Google Sketchup. I am doing a wedge box similar to the example with 2 different depths and my sub and port will be located on the angled side of the sketchup (the side that is not labeled, therefore the side listed as H1 is the back of my enclosure). From the looks of my calculator (which is the latest version downloaded 2 days ago), the measurements for the port sides to cut are for a rectangular box. Is it possible for me to do this type of box with a slot port being angled and how do I need to cut the wood for the internal part of the port. Sorry for the noob question but this is only my second tuned box that I am building with no assistance. Your feedback is appreciated. Link to comment Share on other sites More sharing options...
ChrisB4 Posted July 4, 2013 Report Share Posted July 4, 2013 I still can't figure out this thing Link to comment Share on other sites More sharing options...
JoshuaDeacon Posted July 6, 2013 Report Share Posted July 6, 2013 Can anyone take a few moments to upload this to a new link please? It seems to be dead Thanks Link to comment Share on other sites More sharing options...
SnowDrifter Posted July 6, 2013 Report Share Posted July 6, 2013 Can anyone take a few moments to upload this to a new link please? It seems to be dead Thanks Link works for me. But here's an alternate https://dl.dropboxusercontent.com/u/92188128/TorresBTC.zip ~~~~~~~~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 Link to comment Share on other sites More sharing options...
Torres Posted July 8, 2013 Author Report Share Posted July 8, 2013 If this was answered already, I apologize. I didn't read through all 27 pages I noticed a discrepancy between the newest release and the older non-install program. It seems like the newer version shows a larger net volume with lower tuning despite all the input fields being the same. So which one is right? Here's just a quick sample box. It seems that the discrepancy is the port volume. For my plans: the same box using the older and newer programs has a ~1.5cuft difference, which is more than I feel comfortable ignoring Screen shot of the newest And of the oldest Did you ever get an answer? Nope If I calculate the port displacement by hand(just simple LxWxD) I come up with 1.61cuft which is different than both calculators sorry man, been super busy at work lately. i got promoted so now i'm working 12+ hours a day so by the time i get home i don't feel like doing shit. i'll try to motivate myself tho Chris, thanks for the great app but I have one question and I will need to refer to your help section images in Google Sketchup. I am doing a wedge box similar to the example with 2 different depths and my sub and port will be located on the angled side of the sketchup (the side that is not labeled, therefore the side listed as H1 is the back of my enclosure). From the looks of my calculator (which is the latest version downloaded 2 days ago), the measurements for the port sides to cut are for a rectangular box. Is it possible for me to do this type of box with a slot port being angled and how do I need to cut the wood for the internal part of the port. Sorry for the noob question but this is only my second tuned box that I am building with no assistance. Your feedback is appreciated. if the face of the port is going to be angled, you'll want that angle to be consistent throughout the port and be angled inside the box as well. Link to comment Share on other sites More sharing options...
Recommended Posts
Archived
This topic is now archived and is closed to further replies.