dkahns51 Posted August 19, 2011 Report Share Posted August 19, 2011 I was wondering.. if you had 3 12's tuned to the same frequency and same port area as 2 18's would they sound the exact same? Or would the 18's produce more bass/get lower? Its kinda been bothering me to think about. I would assume that 2 18's would get lower, and the 12's would get more SQ out of them. Quote **Clicky>>My 2009 Subaru Impreza Outback Sport Buildlog<<Clicky** I'm messing up 98% of the time Link to comment Share on other sites More sharing options...
TeejayBee Posted August 19, 2011 Report Share Posted August 19, 2011 I think there are to many variables to throw into this question. Box, Subs, amps, so much stuff Quote Link to comment Share on other sites More sharing options...
ChevyBoy95 Posted August 19, 2011 Report Share Posted August 19, 2011 size doesn't really dictate SQ, a lot of people have proved that 18s can be quite musical. As far as more bass, 2 18s swamp the size of the 3 12s (4 12s wouldnt even equal 2 18s in cone area). the 18s would need more port area and more cubic feet that 3 12s. Quote Best Score to Date : 160.5 dB Outlaw (47Hz)[4 XM 15's & 2 Taramps Bass 12k's] BL : http://www.stevemeadedesigns.com/board/topic/147800-chevyboy95s-4-15s-7krms-wall-1533-db-on-half-power/YouTube: http://www.youtube.com/hitemwiththeflex/ Link to comment Share on other sites More sharing options...
dkahns51 Posted August 19, 2011 Author Report Share Posted August 19, 2011 Well hypothetical both boxees are equal. I thought cone area went 3*12 = 36... and 2*18= 36 ? Quote **Clicky>>My 2009 Subaru Impreza Outback Sport Buildlog<<Clicky** I'm messing up 98% of the time Link to comment Share on other sites More sharing options...
Team_DC-Derrick Posted August 19, 2011 Report Share Posted August 19, 2011 Well hypothetical both boxees are equal. I thought cone area went 3*12 = 36... and 2*18= 36 ? http://www.stevemeadedesigns.com/board/topic/6819-cone-area-of-a-subwoofer/ How to calculate cone areaCone area = pi x (r x r) pi = 3.14 r = radius of sub One 8" = 50.27 One 10" = 78.54 One 12" = 113.1 One 15" = 176.71 One 18" = 254.47 Two 8" = 100.53 Two 10" = 157.08 Two 12" = 226.19 Two 15" = 353.43 Two 18" = 508.94 Three 8" = 150.8 Three 10" = 235.62 Three 12" = 339.29 Three 15" = 530.14 Three 18" = 763.41 Four 8" = 201.06 Four 10" = 314.16 Four 12" = 452.39 Four 15" = 706.86 Four 18" = 1017.87 2 18s = bigger than 3 12s Quote The DC Integra 3 18s to 6 15 build log Team_DC-Derrick's Youtube Team DC Audio where theres a will theres a wall....... I just realized Steve has reach Voldemort status, over on JP's site he is the one who will not be named....."We dont speak his name over here, fearing it will destroy us" LOL not even in hush tones Link to comment Share on other sites More sharing options...
dkahns51 Posted August 19, 2011 Author Report Share Posted August 19, 2011 Well hypothetical both boxees are equal. I thought cone area went 3*12 = 36... and 2*18= 36 ? http://www.stevemeadedesigns.com/board/topic/6819-cone-area-of-a-subwoofer/ How to calculate cone areaCone area = pi x (r x r) pi = 3.14 r = radius of sub One 8" = 50.27 One 10" = 78.54 One 12" = 113.1 One 15" = 176.71 One 18" = 254.47 Two 8" = 100.53 Two 10" = 157.08 Two 12" = 226.19 Two 15" = 353.43 Two 18" = 508.94 Three 8" = 150.8 Three 10" = 235.62 Three 12" = 339.29 Three 15" = 530.14 Three 18" = 763.41 Four 8" = 201.06 Four 10" = 314.16 Four 12" = 452.39 Four 15" = 706.86 Four 18" = 1017.87 2 18s = bigger than 3 12s haha.. my bad didnt know it went down like that. Quote **Clicky>>My 2009 Subaru Impreza Outback Sport Buildlog<<Clicky** I'm messing up 98% of the time Link to comment Share on other sites More sharing options...
ChevyBoy95 Posted August 19, 2011 Report Share Posted August 19, 2011 (edited) sorry but that was humorous. all you calculated would be the height if you stacked them (3 12in next to each other is 36in, same with the 18s). TO get cone area is it r*r*3.14 (r being radius or half the diameter). so... 3 12s ---> 6*6*3.14 = 113.1 then x3 for the 3 woofers = 339.3 square inches roughly of cone area 2 18s ---> 9*9*3.14 = 254.47 then x2 for the 2 woofers = 508.94 square inches roughly of cone area Edited August 19, 2011 by ChevyBoy95 Quote Best Score to Date : 160.5 dB Outlaw (47Hz)[4 XM 15's & 2 Taramps Bass 12k's] BL : http://www.stevemeadedesigns.com/board/topic/147800-chevyboy95s-4-15s-7krms-wall-1533-db-on-half-power/YouTube: http://www.youtube.com/hitemwiththeflex/ Link to comment Share on other sites More sharing options...
dkahns51 Posted August 19, 2011 Author Report Share Posted August 19, 2011 Lol that just rethinks my whole idea on what i would do in the future then.. lol. Thanks guys. This thread is officially over/done/dumb Quote **Clicky>>My 2009 Subaru Impreza Outback Sport Buildlog<<Clicky** I'm messing up 98% of the time Link to comment Share on other sites More sharing options...
RAM_Designs Posted August 19, 2011 Report Share Posted August 19, 2011 Or you could just look at the specs for the subs in question. Most manufacturers will list cone area, which will be more accurate than simply taking half of the sub size and using that as the radius. Quote Ryan Miskin - owner of RAM Designs I have my PM's turned off, please email at <script data-cfhash='f9e31' type="text/javascript"> /* */</script> 2200+ designs since March 2011... Link to comment Share on other sites More sharing options...
ChevyBoy95 Posted August 19, 2011 Report Share Posted August 19, 2011 Or you could just look at the specs for the subs in question. Most manufacturers will list cone area, which will be more accurate than simply taking half of the sub size and using that as the radius. yea, thats why i said roughly, because a 12 usually measures 11 from edge of surround to the other edge of the surround, and then there are other things like 1/3 of the surround count as cone area and the other doesnt, but in generalities the pi*r*r works. Quote Best Score to Date : 160.5 dB Outlaw (47Hz)[4 XM 15's & 2 Taramps Bass 12k's] BL : http://www.stevemeadedesigns.com/board/topic/147800-chevyboy95s-4-15s-7krms-wall-1533-db-on-half-power/YouTube: http://www.youtube.com/hitemwiththeflex/ Link to comment Share on other sites More sharing options...
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