TS2GFrank Posted February 18, 2014 Report Share Posted February 18, 2014 I don't know very much about enclosures and building them to best occupy your airspace in your vehicle but earlier today me and friend had a discussion about airspace. We talked about a scenario in which I bought a Tahoe and I ran 2 15's on a lot of power. He argued that I would be a lot louder on the TL with 2 18's and the 15s wouldn't work because they aren't big enough to make pressure in a cabin as big as a Tahoe. I told him that yes 2 18's has more cone area but other factors come into sound pressure especially enclosure. He basically argued to me that with the same sub, same power, and same tuned box freq the 18s would be louder on TermLab. I agree with him but I don't agree on his "Bigger woofer is louder" theory. Could someone help me clarify what would be the difference in this scenario? Link to comment Share on other sites More sharing options...
JesseyMclame Posted February 18, 2014 Report Share Posted February 18, 2014 With everything equal, yes, cone area is king. But it depends on everything. If you had say 2 15's on 4k, and 2 18s on 1k, both in proper boxes, I'd imagine the 15s would be much louder. Current setup in my 96 Hoe Hu - Pioneer DEH-80prs. Amps - (4) Crossfire C5 1700D's, MTX Thunder 5604(mids), PPI Art 300.2 (tweets) Batts - 4 91ah rear batts, 50ah batt up front. Subs - 2 Crossfire XSv2 18's Alt - Singer 330A Front stage - Random JL & Eclipse mids, Eclipse tweets Link to comment Share on other sites More sharing options...
Brandonbkd Posted February 18, 2014 Report Share Posted February 18, 2014 You could get louder on the 2 15s rather than the 2 18s, but you would need to put a lot more power in the 15s to do so. It would just be easier to get loud with the 18s FI BL18 Build Log: CLICK HERE!! 2003 Explorer Sport: FI BL18 SoundQubed 2200 at 0.7ohm Pioneer DEH-2500UI Pioneer 6 x 8s Rockford Fosgate 6 x 9s 5 ft^3 box at 35hz Lots of Mega Mat Link to comment Share on other sites More sharing options...
john253a Posted February 18, 2014 Report Share Posted February 18, 2014 Is everyone forgetting Xmas Would a 15" sub with 30mm Xmas Not move the same amount of air as a 18" with 20mm Xmas? Link to comment Share on other sites More sharing options...
Tarball Posted February 18, 2014 Report Share Posted February 18, 2014 Is everyone forgetting Xmas Would a 15" sub with 30mm Xmas Not move the same amount of air as a 18" with 20mm Xmas? What the hell does Christmas have to do with anything ? CURRENT SYSTEM: Alternator: Stock alt on mids/highs Isolated DC Power 270 SP - Charging @ 16.8v Batteries: (2) XS D1400s Power Cable: Double Runs of 1/0 KNU Kolossus Fleks Headunit: 80-PRS Sub Amp: DC 5.0k Subwoofers: 2 RE MT 15s /PSI dual .7ohm recones Subwoofer Enclosure: 9.1cubes @ 32hz - brutal. Mids & Highs Amp: CT125.4 Active Components: Mids RE XXX 6.5c Highs - 3 RE XXX tweeters per side(A pillar) Noise Control: Damplifier Pro all over the cab. Build Log If you do business with me please leave feedback here: FEEDBACK THREAD Highest Legal Score: 151.0 db Highest Musical 30 Second Average: 151.6 db Link to comment Share on other sites More sharing options...
youngbass98 Posted February 18, 2014 Report Share Posted February 18, 2014 Lol he meant xmax 06 monte carlo 2 12 rockford p3s soundstream rubicon 2500 crescendo audio mezzo 6.5 ct sounds 125.4 execution audio and shca wiring 2 xs d3400 on stock alt Link to comment Share on other sites More sharing options...
Tarball Posted February 18, 2014 Report Share Posted February 18, 2014 yeah, i know, just trolling CURRENT SYSTEM: Alternator: Stock alt on mids/highs Isolated DC Power 270 SP - Charging @ 16.8v Batteries: (2) XS D1400s Power Cable: Double Runs of 1/0 KNU Kolossus Fleks Headunit: 80-PRS Sub Amp: DC 5.0k Subwoofers: 2 RE MT 15s /PSI dual .7ohm recones Subwoofer Enclosure: 9.1cubes @ 32hz - brutal. Mids & Highs Amp: CT125.4 Active Components: Mids RE XXX 6.5c Highs - 3 RE XXX tweeters per side(A pillar) Noise Control: Damplifier Pro all over the cab. Build Log If you do business with me please leave feedback here: FEEDBACK THREAD Highest Legal Score: 151.0 db Highest Musical 30 Second Average: 151.6 db Link to comment Share on other sites More sharing options...
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