siucsaluki11 Posted December 13, 2009 Report Share Posted December 13, 2009 at a quick look at it, it looks like it would do fine, but ^ hes right about the sub displacment. the only thing that would concern me would be the end of the port inside the box. with it ending that way and not having an "L", you may get some port noise from turbulance. Having it too close would or not having an L would? Im not buying the not having an L thing, but being too close i would believe. Quote woman..cant live with em...cant shoot em...guess were all fucked You might be a Redneck if you use your leftover gutters for a speaker box port... YOU JUST LOST THE GAMER.I.P. Blazer=========================Last setup was in the 141s on music (37hz) with 2 12s and 1kw in a 4dr blazer.2010 Mitsubishi Lancer DE2 12in Clarions (kept from blazer)HiFonics BRZ1700.1d (at 2 ohms BLOWN) [JBL GTS180X for subs currently 60wRMS x2ch!!!!!! This works for till i get the blown amp fixed] Alpine 4ch salvaged from blazer (currently near death)9887 peerless 7s in the doors and CDT tweeters ran active no speakers in the rearKintik HC1400 under the hood.metered once a while ago, dont remember it...was piss poor compared to the blazer, mid 130s i think....looking to replace subs and amp when i have money. Link to comment Share on other sites More sharing options...
toylocost Posted December 14, 2009 Author Report Share Posted December 14, 2009 So I want to make my port 19" long like the calculator in my last post says. If I do it like this... The red part will be 16~1/16" and the green part will be 2~15/16". Add the two up and that equals 19". Is this the correct way to get 19"? Quote 99 4runner - So far: Alpine PDX4.100 & AQ1200D. Needz speekrz yo. Link to comment Share on other sites More sharing options...
Clif Posted December 14, 2009 Report Share Posted December 14, 2009 Please explain why you dont need to? Id like to know. Seeing as IT DEPLACES SPACE. the 45 in the vent. not the box Quote 03 Trailblazer EXT LT In Dash Rear Flip Down Polk Audio Font & Rear Stage Hifonics Zeus 4 Chan Amp Hifonics Brutus Mono Amp 12" Rockford Fosgate Power HX2 T-Line tuned to 45hz 18"BTL T-line @31Hz (9 weeks pregnant) Link to comment Share on other sites More sharing options...
Torres Posted December 14, 2009 Report Share Posted December 14, 2009 (edited) This box will be loud but not deep. not true. maybe not quite as deep as a box with less port area, but my box has about 16 sq inches of port like this one and almost the same tuning...and mine gets plenty deep I do it like this... The red part will be 16~1/16" and the green part will be 2~15/16". Add the two up and that equals 19". Is this the correct way to get 19"? measure down the middle of the port to get port length. if you do it the way you say, measuring on the outer walls would be much longer. so measuring down the middle of the port will get you correct numbers a 45 in the vent would be nice. bracing i say is always a good idea. but 45's in the box arent as necessary Edited December 14, 2009 by ExpoSport Quote Link to comment Share on other sites More sharing options...
toylocost Posted December 14, 2009 Author Report Share Posted December 14, 2009 (edited) So if i measure down the center it leaves me with just under a half inch at a 90. I I'm guessing the thickness of the port wall (3/4") will put me close enough to what I need? EDIT: That would be removing the green part and just leaving it at that. Edited December 14, 2009 by toylocost Quote 99 4runner - So far: Alpine PDX4.100 & AQ1200D. Needz speekrz yo. Link to comment Share on other sites More sharing options...
Boon Posted December 14, 2009 Report Share Posted December 14, 2009 IMO too big and too much port for rock/country. But that's just me. Quote 10.x volts fo' life! Link to comment Share on other sites More sharing options...
Ben Building Posted December 14, 2009 Report Share Posted December 14, 2009 (edited) not true. maybe not quite as deep as a box with less port area, but my box has about 16 sq inches of port like this one and almost the same tuning...and mine gets plenty deepmeasure down the middle of the port to get port length. if you do it the way you say, measuring on the outer walls would be much longer. so measuring down the middle of the port will get you correct numbers a 45 in the vent would be nice. bracing i say is always a good idea. but 45's in the box arent as necessary Your box looks much better with the corner added. If you tune your box to 36 hertz, then the port will unload on notes deeper than that. "Unloading" means your port acts more like a giant hole in the enclosure instead of an output-augmenting device. Below tuning, response rolls off at up to 18 db/octave and the woofer sees no mechanical resistance from the port. It just plays in free-air. On music, there is no-telling what kind of note the sub will get thrown at it. It is better to design an enclosure that plays ALL the notes and not just the higher ones. Don't listen to this guy^^. Tune deeper, even if you have to increase overall size a little bit. Edited December 14, 2009 by Ben Building Quote Link to comment Share on other sites More sharing options...
toylocost Posted December 14, 2009 Author Report Share Posted December 14, 2009 In my 4runner I have 2 15s tuned to 37.5hz in 9cuft. It does just fine. Quote 99 4runner - So far: Alpine PDX4.100 & AQ1200D. Needz speekrz yo. Link to comment Share on other sites More sharing options...
Clif Posted December 14, 2009 Report Share Posted December 14, 2009 i usually stick around the 14ish area for sq inch of port per cube. Most of my boxes are tuned to about 31 hz. plays the lows amazing but yet still sounds pretty good on the rock or country. but if your more of a rock person i would tune just a jib jab higher. but there will be nothing like a t line on rock oooo just amazingness. if you got the room and the right sub that is what i would do. Quote 03 Trailblazer EXT LT In Dash Rear Flip Down Polk Audio Font & Rear Stage Hifonics Zeus 4 Chan Amp Hifonics Brutus Mono Amp 12" Rockford Fosgate Power HX2 T-Line tuned to 45hz 18"BTL T-line @31Hz (9 weeks pregnant) Link to comment Share on other sites More sharing options...
siucsaluki11 Posted December 14, 2009 Report Share Posted December 14, 2009 I think the highest ive tuned a box was 34 Hz for my own personal use. And that was one of the first ones i did. But tuning is kinda dependant on what woofer you wanna run. Some like lower tuning. Others, like AQ and DD will drop way below tuning and like tuning up higher around 38Hz. Fav box in my blazer was 4.8 cubes, 60 in^2 of port area, tuned around 32 Hz Quote woman..cant live with em...cant shoot em...guess were all fucked You might be a Redneck if you use your leftover gutters for a speaker box port... YOU JUST LOST THE GAMER.I.P. Blazer=========================Last setup was in the 141s on music (37hz) with 2 12s and 1kw in a 4dr blazer.2010 Mitsubishi Lancer DE2 12in Clarions (kept from blazer)HiFonics BRZ1700.1d (at 2 ohms BLOWN) [JBL GTS180X for subs currently 60wRMS x2ch!!!!!! This works for till i get the blown amp fixed] Alpine 4ch salvaged from blazer (currently near death)9887 peerless 7s in the doors and CDT tweeters ran active no speakers in the rearKintik HC1400 under the hood.metered once a while ago, dont remember it...was piss poor compared to the blazer, mid 130s i think....looking to replace subs and amp when i have money. Link to comment Share on other sites More sharing options...
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