Slawsen Posted July 28, 2010 Report Share Posted July 28, 2010 This is gonna be for 2 type R 12's. So far this is what i've got, and the port dimensions are CONFUSING ME. I'm not sure if I want a wall in the middle of the port that divides to box into separate chambers, or if i want to have 2 port walls. And i'm not sure what the length width and the height of the port correspond with...Can anyone help me? P.S: This is my first box build, and i'm more of a visual learner, so this is not easy for me.. 00' Nissan Xterra Always under construction :] HU: Pioneer DEH3100-UB Mids & Highs: Kicker DS Component Set & Crescendo tweeters Mids & Highs Amp: Rockford 150.2 Subwoofer: 2 DC Audio LV 4 18"s Subwoofer Amp: Hifonics Brutus 2005d you been hanging out with jeff and dustin with that green paint? its yellow so it has to be loud. Link to comment Share on other sites More sharing options...
BJD3 Posted July 28, 2010 Report Share Posted July 28, 2010 You need more port area to begin with. Maybe this will help you understand port dimensions? Anti Peel and Seal...lol You may be offended by the above. Don't take it personally, I'm just abrasive. 2002 Buick Park Avenue DC Level 4 M2 12 D2 Car Audio Bargain 1600.1 Eclipse CD3200 ~2 cubes @ 34 hz. Stinger Roadkill Expert Link to comment Share on other sites More sharing options...
Slawsen Posted July 28, 2010 Author Report Share Posted July 28, 2010 What do the el sl and stuff on the port diagram stand for? And I should be able to figure it out from there. I know i need more port area, I was just trying to figure out how the calc works cuz i was confused Ah this is gay..I still cant figure out what is what in comparison to this calculator..common port walls, external port wall, height, width, length of port 00' Nissan Xterra Always under construction :] HU: Pioneer DEH3100-UB Mids & Highs: Kicker DS Component Set & Crescendo tweeters Mids & Highs Amp: Rockford 150.2 Subwoofer: 2 DC Audio LV 4 18"s Subwoofer Amp: Hifonics Brutus 2005d you been hanging out with jeff and dustin with that green paint? its yellow so it has to be loud. Link to comment Share on other sites More sharing options...
BJD3 Posted July 28, 2010 Report Share Posted July 28, 2010 SH is port height SW is port width SL is port length ___ Anti Peel and Seal...lol You may be offended by the above. Don't take it personally, I'm just abrasive. 2002 Buick Park Avenue DC Level 4 M2 12 D2 Car Audio Bargain 1600.1 Eclipse CD3200 ~2 cubes @ 34 hz. Stinger Roadkill Expert Link to comment Share on other sites More sharing options...
Slawsen Posted July 28, 2010 Author Report Share Posted July 28, 2010 SH is port height SW is port width SL is port length so height and width have to do with the front baffle cuts, and the port length is the port board on the inside? And you don't have to do an L..or external port.? 00' Nissan Xterra Always under construction :] HU: Pioneer DEH3100-UB Mids & Highs: Kicker DS Component Set & Crescendo tweeters Mids & Highs Amp: Rockford 150.2 Subwoofer: 2 DC Audio LV 4 18"s Subwoofer Amp: Hifonics Brutus 2005d you been hanging out with jeff and dustin with that green paint? its yellow so it has to be loud. Link to comment Share on other sites More sharing options...
BJD3 Posted July 28, 2010 Report Share Posted July 28, 2010 External port is the amount of port that is physically outside of the box. For example, BigPimpin91's box has external "aeroports". (don't think they're flared) Anti Peel and Seal...lol You may be offended by the above. Don't take it personally, I'm just abrasive. 2002 Buick Park Avenue DC Level 4 M2 12 D2 Car Audio Bargain 1600.1 Eclipse CD3200 ~2 cubes @ 34 hz. Stinger Roadkill Expert Link to comment Share on other sites More sharing options...
BJD3 Posted July 28, 2010 Report Share Posted July 28, 2010 so height and width have to do with the front baffle cuts, and the port length is the port board on the inside? And you don't have to do an L..or external port.? Port width is constant throughout the entire port. Anti Peel and Seal...lol You may be offended by the above. Don't take it personally, I'm just abrasive. 2002 Buick Park Avenue DC Level 4 M2 12 D2 Car Audio Bargain 1600.1 Eclipse CD3200 ~2 cubes @ 34 hz. Stinger Roadkill Expert Link to comment Share on other sites More sharing options...
R_Mac_1 Posted July 28, 2010 Report Share Posted July 28, 2010 The easiest way to do it would be a slot port that looks like the pic that BJD3 posted, both subs in a common chamber with one port. Port height would be your overall height minus 1.5 (assuming you're using 3/4 wood). Port width is whatever you need to get your port area into the recommended range (the recommended range will change depending on the net volume) Port length is whatever it needs to be to get your desired tuning. All these things will change any time you change your overall dimensions, so just monkey around with it until you get all your dimensions, volume, tuning, etc. where you want them. Oh yeah, and if you design a box that looks like the one above, the number of common port walls will be 3. As I understand it, physical port length is what I made red in the pic above. Effective port length is longer because the port acts longer than it actually is. Physical port length is what you need to know to cut your pieces. 2002 Pontiac Bonneville SSEi Pioneer DEH-P6000UB Alpine SPX-17REF 6.5" components (active) Sundown SAX-50.4 Sundown z15 (3 cubes @ 35 hz) Sundown SAX-1200D 2006 Buick Rainier CXL AWD V8 Stock Bose system 12" Alpine Type E in aeroported box Profile AP1000M Link to comment Share on other sites More sharing options...
Slawsen Posted July 28, 2010 Author Report Share Posted July 28, 2010 The easiest way to do it would be a slot port that looks like the pic that BJD3 posted, both subs in a common chamber with one port. Port height would be your overall height minus 1.5 (assuming you're using 3/4 wood). Port width is whatever you need to get your port area into the recommended range (the recommended range will change depending on the net volume) Port length is whatever it needs to be to get your desired tuning. All these things will change any time you change your overall dimensions, so just monkey around with it until you get all your dimensions, volume, tuning, etc. where you want them. Oh yeah, and if you design a box that looks like the one above, the number of common port walls will be 3. So if i wanted both subs to the left side and the port all the way to the right side, it would be 3 common walls? And the length of the port is the whole length of the "L"??? 00' Nissan Xterra Always under construction :] HU: Pioneer DEH3100-UB Mids & Highs: Kicker DS Component Set & Crescendo tweeters Mids & Highs Amp: Rockford 150.2 Subwoofer: 2 DC Audio LV 4 18"s Subwoofer Amp: Hifonics Brutus 2005d you been hanging out with jeff and dustin with that green paint? its yellow so it has to be loud. Link to comment Share on other sites More sharing options...
BJD3 Posted July 28, 2010 Report Share Posted July 28, 2010 Yes. Keep in mind that you measure port length down the middle of the port though. Anti Peel and Seal...lol You may be offended by the above. Don't take it personally, I'm just abrasive. 2002 Buick Park Avenue DC Level 4 M2 12 D2 Car Audio Bargain 1600.1 Eclipse CD3200 ~2 cubes @ 34 hz. Stinger Roadkill Expert Link to comment Share on other sites More sharing options...
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