Charger Posted July 15, 2007 Report Share Posted July 15, 2007 How much port area do you have? Quote Previous 150+ daily rides: Volvo 240 wagon 2 x DD Audio 9915s walled, Isuzu Trooper 6 x DD Audio 3515s walled clamshell, Lexus LX470 2 x Kicked Solo X 18s, Lexus LS400 4 x American Bass HD18 walled SMD - System of The Month August 2008 My Youtube Videos Link to comment Share on other sites More sharing options...
stevh0 Posted July 15, 2007 Author Report Share Posted July 15, 2007 okay ended up dropping the tuning freq to 32hz by narrowing the port . box is still sealing up . hope it feels good Quote Link to comment Share on other sites More sharing options...
stevh0 Posted July 15, 2007 Author Report Share Posted July 15, 2007 How much port area do you have? went from 16 x 2.8 to 16 x 2 look this is a dd entry level , so i doubt that it will need huge ports . Quote Link to comment Share on other sites More sharing options...
Charger Posted July 15, 2007 Report Share Posted July 15, 2007 Yeah that is quite small indeed. I've tried many variations on my 9915: 11" x 11" 11" x 5.5" 11" x 7" and 12" x 13.5" Right now I'm using 11" x 7" and I think it's the sweet area, for my enclosure anyhow. Tuned to 40hz or so. Quote Previous 150+ daily rides: Volvo 240 wagon 2 x DD Audio 9915s walled, Isuzu Trooper 6 x DD Audio 3515s walled clamshell, Lexus LX470 2 x Kicked Solo X 18s, Lexus LS400 4 x American Bass HD18 walled SMD - System of The Month August 2008 My Youtube Videos Link to comment Share on other sites More sharing options...
stevh0 Posted July 15, 2007 Author Report Share Posted July 15, 2007 if the port is too big it acts like pump .. it moves alot of air but there is no energy .. know what i mean ? Quote Link to comment Share on other sites More sharing options...
Twigz Posted July 15, 2007 Report Share Posted July 15, 2007 if the port is too big it acts like pump .. it moves alot of air but there is no energy .. know what i mean ? are you looking for a big BOOM? if u go with a enclosed box ur subs hit harder, if u go ported, u move more air but less BOOM. I think that's how it works right? Like my box is in my trunk and it's enclosed and the subs hit hard. I won't be able to port until I can get a back seat that folds down ill have to find in a junk yard or somtin. Quote Fear The Quack! Shot at 2007-08-19 Link to comment Share on other sites More sharing options...
stevh0 Posted July 15, 2007 Author Report Share Posted July 15, 2007 with the changed port and the freq drop , the low down freq's bang nicely now ... Quote Link to comment Share on other sites More sharing options...
Charger Posted July 15, 2007 Report Share Posted July 15, 2007 are you looking for a big BOOM? if u go with a enclosed box ur subs hit harder, if u go ported, u move more air but less BOOM. I think that's how it works right? Like my box is in my trunk and it's enclosed and the subs hit hard. I won't be able to port until I can get a back seat that folds down ill have to find in a junk yard or somtin. No, that is completely untrue. Some of the hardest hitting systems use ported enclosure. Steve's Tahoe for example. My 9915 slams really hard and still retains fairly accurate SQ. So I call my car an SQ car to make up for the lack of SPL.. Quote Previous 150+ daily rides: Volvo 240 wagon 2 x DD Audio 9915s walled, Isuzu Trooper 6 x DD Audio 3515s walled clamshell, Lexus LX470 2 x Kicked Solo X 18s, Lexus LS400 4 x American Bass HD18 walled SMD - System of The Month August 2008 My Youtube Videos Link to comment Share on other sites More sharing options...
sean 371 Posted July 15, 2007 Report Share Posted July 15, 2007 are you looking for a big BOOM? if u go with a enclosed box ur subs hit harder, if u go ported, u move more air but less BOOM. I think that's how it works right? Like my box is in my trunk and it's enclosed and the subs hit hard. I won't be able to port until I can get a back seat that folds down ill have to find in a junk yard or somtin. agreed thats a very noob statement to make. Ive built ported enclosure that can out punch the sealed enclosures they were in, while still going low. And btw, "boomy" is actually a bad thing... Quote A couple links to some box builds: Tahoe Box 1, Tahoe Box 2, Nissan Titan, VW GTI, Mini-Bump, Hummer H2, Ford F-150 My own car builds (current setup --- under construction): Overall Thread, Kickpods, Dash, Back Doors Subwoofer Wall Link to comment Share on other sites More sharing options...
getmoney Posted July 15, 2007 Report Share Posted July 15, 2007 boomy is a good thing with some type of music but toooooooo boomy is a bad thing Quote Link to comment Share on other sites More sharing options...
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