kx519 Posted January 7, 2010 Author Report Share Posted January 7, 2010 (edited) are you serious? did you pass the 4th grade? and technically every sub's usable cone area is different. The Sd value in t/s parameters. well whats an average Sd for a 10", 12", 15", and 18" then? Edited January 7, 2010 by kx519 Quote 84 K5 Blazer 3" body, 2" Suspension 35" Maxxis Bighorn 100amp Alt Marine deep cycle for the amps (freebie) KnuKonceptz 1/0 8 Hifonics HFi 12D4's in ~19cubes tuned to 35hz Audiopipe AP-18001D RF 5x8's in the kicks Almani 5.25 comp. in back Kenwood KAC-645 --IN THE FUTURE-- None. <!--quoteo(post=0:date=Feb 3 2010, 09:12 AM:name=Decaf)--><div class='quotetop'>QUOTE (Decaf @ Feb 3 2010, 09:12 AM)</div><div class='quotemain'><!--quotec-->we seriously need some butt plugs so you guys stop spewing chit talk<!--QuoteEnd--></div><!--QuoteEEnd--> Link to comment Share on other sites More sharing options...
slim2fattycake Posted January 7, 2010 Report Share Posted January 7, 2010 look at the t/s parameters for the subs you want and compare or use the formulas everyone has given you. Quote SPL-Lab REPCar: 1996 Honda Accord F22B1 CoupeSuspension: Megan Racing Full Street Coilover Dampener KitAlternator: DC Power XP 270Batteries: XS Power D5100 & D3100Wiring: KnuKonceptz & 2/0 Welding cableHeadunit: Kenwood KDC-MP642UComponents: Hybrid Audio ClarusAmplifers: Lanzar OPTI250X4Subwoofer: 2 Sundown Audio E8.v2Deadener: Sound Deadener ShowdownSPL Meter: SPL-Lab RTA Pro meterWant an SPL meter for a lot less than the cost of a Termlab, but just as accurate and has the same features? PM me.CA ref: (enellz, 92c1v1c, el_chupo_, Thixx, Kraudio12, SethPhillips, NJack2AF, JamesKarr, ExpoSport, 01 S 10, wgsj_fortvalley, fast306stang, Lakota, blackga, TheLow, adrian1185, the727kid, rudy, sundownz, lmllopez, traksta15, gentlejax, satchel50207, Bigthangs, Goindef154)CACO ref: (extremechevyman67, ghostmechanic, FatBoy2, TheMan007, bdufner, 350zkid, ironb, bmansbach)SSA ref as phi: ( shizzzon, porkchop, onebadmonte, stevemead, TRP, ///M5, denim)SMD ref: (DC Power Rob, Nathan@XSPOWER, Jman08)And then some. Link to comment Share on other sites More sharing options...
bcpballer64 Posted January 7, 2010 Report Share Posted January 7, 2010 well whats an average Sd for a 10", 12", 15", and 18" then? Go to that link in one of the first couple of posts at the top. Obviously its not exact but its close at least. Quote "The strongest reason for people to retain the right to keep and bear arms is, as a last resort, to protect themselves against tyranny in government." -- (Thomas Jefferson) Link to comment Share on other sites More sharing options...
tejcurrent Posted January 7, 2010 Report Share Posted January 7, 2010 Fi Subs, from their website www.ficaraudio.com: 10: 310cm^2 12: 480cm^2 15: 810cm^2 18: 1210cm^2 Quote tejcurrent XS Power T3 Link to comment Share on other sites More sharing options...
kx519 Posted January 7, 2010 Author Report Share Posted January 7, 2010 (edited) Fi Subs, from their website www.ficaraudio.com:10: 310cm^2 12: 480cm^2 15: 810cm^2 18: 1210cm^2 Sooo 10" 48 in^2 12" 74.4 in^2 15" 125.5 in^2 18" 187.5 in^2 Compared to the normal ones One 10" = 78.54 One 12" = 113.1 One 15" = 176.71 One 18" = 254.47 Or did i convert it wrong? because thats a hugggeeee difference. Edited January 7, 2010 by kx519 Quote 84 K5 Blazer 3" body, 2" Suspension 35" Maxxis Bighorn 100amp Alt Marine deep cycle for the amps (freebie) KnuKonceptz 1/0 8 Hifonics HFi 12D4's in ~19cubes tuned to 35hz Audiopipe AP-18001D RF 5x8's in the kicks Almani 5.25 comp. in back Kenwood KAC-645 --IN THE FUTURE-- None. <!--quoteo(post=0:date=Feb 3 2010, 09:12 AM:name=Decaf)--><div class='quotetop'>QUOTE (Decaf @ Feb 3 2010, 09:12 AM)</div><div class='quotemain'><!--quotec-->we seriously need some butt plugs so you guys stop spewing chit talk<!--QuoteEnd--></div><!--QuoteEEnd--> Link to comment Share on other sites More sharing options...
Boon Posted January 7, 2010 Report Share Posted January 7, 2010 Does the basket of your sub move in and out? I sure hope not. Sd = piston area = moving area of the sub. I'm not sure if they even include the surround or not. That's why Sd is much smaller than (D/2)^2*Pi Quote 10.x volts fo' life! Link to comment Share on other sites More sharing options...
kx519 Posted January 7, 2010 Author Report Share Posted January 7, 2010 Does the basket of your sub move in and out? I sure hope not. Sd = piston area = moving area of the sub. I'm not sure if they even include the surround or not. That's why Sd is much smaller than (D/2)^2*Pi Thats the sort of thing i was thinking when i asked this question. Quote 84 K5 Blazer 3" body, 2" Suspension 35" Maxxis Bighorn 100amp Alt Marine deep cycle for the amps (freebie) KnuKonceptz 1/0 8 Hifonics HFi 12D4's in ~19cubes tuned to 35hz Audiopipe AP-18001D RF 5x8's in the kicks Almani 5.25 comp. in back Kenwood KAC-645 --IN THE FUTURE-- None. <!--quoteo(post=0:date=Feb 3 2010, 09:12 AM:name=Decaf)--><div class='quotetop'>QUOTE (Decaf @ Feb 3 2010, 09:12 AM)</div><div class='quotemain'><!--quotec-->we seriously need some butt plugs so you guys stop spewing chit talk<!--QuoteEnd--></div><!--QuoteEEnd--> Link to comment Share on other sites More sharing options...
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