Scrappydue Posted March 9, 2016 Share Posted March 9, 2016 I was hoping we were designing one of these. http://www.theaudiobeat.com/ces2010/ces2010_hp_paradigm.htm heard this in San Diego. Left unimpressed. Was even more unimpressed when I found out the price of it. 1 Quote Link to comment Share on other sites More sharing options...
Shiva Posted March 9, 2016 Share Posted March 9, 2016 There was also this one. http://www.powersoundaudio.com/products/triax A guy over at AVS has 4 of these for sale at $2000 grand each. Quote Link to comment Share on other sites More sharing options...
dtr20 Posted March 9, 2016 Author Share Posted March 9, 2016 I like the sonotube idea, but I know there is a ton of math to do to determine your dimensions, and I can't really find a ton of info on it. I can find a lot of finished projects, but not the basic information on how to start a build. I would like to keep it shorter than 21" which I believe means it needs to be wider. Then there is driver sizes, number of drivers, sealed or ports, size of ports, etc. How does this get determine? I think my Cambridge subs go down to 27hz. So I guess a good goal would be to get to 20hz? Quote Link to comment Share on other sites More sharing options...
willland Posted March 9, 2016 Share Posted March 9, 2016 How about a Sunfire True Subwoofer Signature 10 or 12? Bill 1 Quote Link to comment Share on other sites More sharing options...
Moderators Youthman Posted March 9, 2016 Moderators Share Posted March 9, 2016 Conventional sub....probably 20Hz would be about right. If you want to go deaper, IB can hit into the single digits. Quote Link to comment Share on other sites More sharing options...
dtr20 Posted March 9, 2016 Author Share Posted March 9, 2016 For an IB, I would have to cut a hole in my floor, wall, or ceiling, right? Or could I just place a downward firing box on the floor? Sorry, these advanced subwoofers are very new to me. Quote Link to comment Share on other sites More sharing options...
CECAA850 Posted March 9, 2016 Share Posted March 9, 2016 For an IB, I would have to cut a hole in my floor, wall, or ceiling, right? Or could I just place a downward firing box on the floor? Sorry, these advanced subwoofers are very new to me. Gotta have a hole, yes. You need some where for the back wave to go. Quote Link to comment Share on other sites More sharing options...
CECAA850 Posted March 9, 2016 Share Posted March 9, 2016 Here's a calculator for a sonotube sub. Quote Link to comment Share on other sites More sharing options...
dtr20 Posted March 9, 2016 Author Share Posted March 9, 2016 Yea, I can't do that. So conventional or sonotube is the way to go. Quote Link to comment Share on other sites More sharing options...
dtr20 Posted March 9, 2016 Author Share Posted March 9, 2016 Dude, thank you, that's awesome Quote Link to comment Share on other sites More sharing options...
Moderators Youthman Posted March 9, 2016 Moderators Share Posted March 9, 2016 Som have the back wave going into the attic. Wakejunkie has his going into his basement Quote Link to comment Share on other sites More sharing options...
Paducah Home Theater Posted March 9, 2016 Share Posted March 9, 2016 Since we're on the subject of triangles, it is interesting to me how many pro audio cabs are using triangle ports nowadays. It's not just a couple of Klipsch designs, it is all over the place. B&C even has plans that show you how to build your own. It is easy, cheap, and the inside of the boxes with triangle ports likely have smoother air flow. Lots of people are building slot ports just to turn around and cut a 45 to smooth out the 90's, so obviously it helps. If they're going to do that, I'm not sure why we don't see more triangle ports in DIY designs. Maybe they're not as pretty, I dunno. Also super low tuning would be hard, can't exactly make a triangle port that wraps around and changes direction, not very easily I guess. Quote Link to comment Share on other sites More sharing options...
CECAA850 Posted March 9, 2016 Share Posted March 9, 2016 Dude, thank you, that's awesome No problem. Quote Link to comment Share on other sites More sharing options...
jason str Posted March 9, 2016 Share Posted March 9, 2016 Corner ports strengthen the cabinet and are a great alternative to slot ports. Running longer ports is not hard at all, just make sure you subtract them from your volume like any other port types. Quote Link to comment Share on other sites More sharing options...
Paducah Home Theater Posted March 10, 2016 Share Posted March 10, 2016 (edited) Running longer ports is not hard at all I'm just thinking super long ports. With a slot port all you have to do is put up panels and leave a gap at one end and you can switch directions easily, even multiple times. Doing that with a triangle port is much more involved. You'd have a triangle port on say the far left bottom corner, and to switch directions you'd have to run it along the back corner shortly, then switch directions, except at that point your triangle is inverted and there's no wall for the opposite side. In the meantime there's several angles. Just kind of goofy. Think about duplicating this design with triangle ports for example. It's all fun and games until you have to switch directions on that bottom left corner. At that point, any advantage of triangle ports flies out the window. Edited March 10, 2016 by MetropolisLakeOutfitters Quote Link to comment Share on other sites More sharing options...
jjptkd Posted March 10, 2016 Share Posted March 10, 2016 +1 on the Sunfire subwoofer, great for small spaces and work well in a corner. I'd go for the Signature 12" model, they're great especially in the lower frequencies like below 50hz and there only 13" square. You can buy the new XT models for around $1000 plus shipping from save-on-audio.com http://save-on-audio.com/product_info.php?products_id=11243 Quote Link to comment Share on other sites More sharing options...
jason str Posted March 10, 2016 Share Posted March 10, 2016 (edited) Running longer ports is not hard at all I'm just thinking super long ports. With a slot port all you have to do is put up panels and leave a gap at one end and you can switch directions easily, even multiple times. Doing that with a triangle port is much more involved. You'd have a triangle port on say the far left bottom corner, and to switch directions you'd have to run it along the back corner shortly, then switch directions, except at that point your triangle is inverted and there's no wall for the opposite side. In the meantime there's several angles. Just kind of goofy. Think about duplicating this design with triangle ports for example. It's all fun and games until you have to switch directions on that bottom left corner. At that point, any advantage of triangle ports flies out the window. Simply 45 your ends in the corner and use the back panel for corner port extension if needed. Just because its different does not mean its harder to build. Edited March 10, 2016 by jason str Quote Link to comment Share on other sites More sharing options...
dtr20 Posted March 10, 2016 Author Share Posted March 10, 2016 This design looks pretty good and easy to build. Is this something to consider to get to the lower hz? What is this called to find plans? I'm also experimenting with the sonosub software to understand it first. Quote Link to comment Share on other sites More sharing options...
Paducah Home Theater Posted March 10, 2016 Share Posted March 10, 2016 Simply 45 your ends in the corner and use the back panel for corner port extension if needed. Just because its different does not mean its harder to build. Yes but at some point you run out of corners to piggy back off of. Quote Link to comment Share on other sites More sharing options...
Paducah Home Theater Posted March 10, 2016 Share Posted March 10, 2016 This design looks pretty good and easy to build. Is this something to consider to get to the lower hz? What is this called to find plans? I'm also experimenting with the sonosub software to understand it first. It's just a slot port, google "port calculator" and you can play around with some numbers. The last one I posted is a transmission line though, entirely different beast. I've been wanting to do one but can't figure out how to design one at lower frequencies. Quote Link to comment Share on other sites More sharing options...
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