dsw422 Posted July 13, 2015 Author Report Share Posted July 13, 2015 It wouldn't hurt to do a 3rd if you wanted to, was just saying 2 should be enough as long as you have solid braces inside the box. Ok.. thanks.. and there certainly will be plenty of bracing.. don't need this box blowing apart on him.. lol 2014 Ford Focus SE Sedan Factory Sony 10 Speaker Sound System 1994 Ford Bronco Dual head unit (i kno) Sony door speakers Kenwood Rear Speakers Custom Center console in the works. will house an NVX NSW10" https://m.facebook.com/WinnsCustomCarAudio/ Link to comment Share on other sites More sharing options...
Karkov Posted July 13, 2015 Report Share Posted July 13, 2015 Do plenty internal braces. 2007 Chevy Tahoe (SOLD) 12 ~ FI Audio X series 10" w/BP option 2 ~ DC Audio 5.0K @0.67 3 ~ DC Audio 5.0K @1.0 2 ~ PPI 3 way sets (not installed yet) 1 ~ RF T400-4, 1 ~ RF T600-2, 1 ~ RF T600-4 4 ~ CT Sounds 5.25" Strato comps (rear fill only) 1 ~ XS Power D4800 1 ~ XS Power D3400 8 ~ XS Power XP3000 160 stock alt, Mechman 370 Elite, 185 DC Power 320+ Sq. Ft. Sound Deadener Pioneer AVH-X5500BHS Youtube: https://www.youtube.com/user/knfjdkghjudfhsgkjdhf/videos?sort=dd&view=0&shelf_id=0 Link to comment Share on other sites More sharing options...
dsw422 Posted July 13, 2015 Author Report Share Posted July 13, 2015 hey guys.. So i decided to suprise my buddy with something i think will add a liitle WOW factor to the box... I am going to kerf the top of the port prolly about 5-8 inch radius.. how do i calculate the total port length with the new kerf?? the bottom of the port will remain the same.. thanks for the help guys!! 2014 Ford Focus SE Sedan Factory Sony 10 Speaker Sound System 1994 Ford Bronco Dual head unit (i kno) Sony door speakers Kenwood Rear Speakers Custom Center console in the works. will house an NVX NSW10" https://m.facebook.com/WinnsCustomCarAudio/ Link to comment Share on other sites More sharing options...
ChevyBoy95 Posted July 13, 2015 Report Share Posted July 13, 2015 Math is how you calculate it, just add the straight pieces that go to the kerf, and the arc length of whatever radius you want, add all 3 up, cut that out and kerf the section that needs to bend. 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...
dsw422 Posted July 13, 2015 Author Report Share Posted July 13, 2015 Math is how you calculate it, just add the straight pieces that go to the kerf, and the arc length of whatever radius you want, add all 3 up, cut that out and kerf the section that needs to bend. huh??? what straight pieces??? i just need to know the effective length of the kerf.. i heard somewhere that you add half the kerf length to the overall length of the port... but im not sure if that is right??? 2014 Ford Focus SE Sedan Factory Sony 10 Speaker Sound System 1994 Ford Bronco Dual head unit (i kno) Sony door speakers Kenwood Rear Speakers Custom Center console in the works. will house an NVX NSW10" https://m.facebook.com/WinnsCustomCarAudio/ Link to comment Share on other sites More sharing options...
Joe X Posted July 13, 2015 Report Share Posted July 13, 2015 Subtract half the radius of the kerf from the overall length of the same port without a kerf. Link to comment Share on other sites More sharing options...
dsw422 Posted July 13, 2015 Author Report Share Posted July 13, 2015 Subtract half the radius of the kerf from the overall length of the same port without a kerf.radius or do you mean the length of the kerf (1/4 circumfrence)??and you said subtract? so lets say my regular port length is 28 inches. now with a kerf (5 inch radius, and 7.85 total length of kerf). the same port will now be 25.5 inches?? 2014 Ford Focus SE Sedan Factory Sony 10 Speaker Sound System 1994 Ford Bronco Dual head unit (i kno) Sony door speakers Kenwood Rear Speakers Custom Center console in the works. will house an NVX NSW10" https://m.facebook.com/WinnsCustomCarAudio/ Link to comment Share on other sites More sharing options...
Joe X Posted July 14, 2015 Report Share Posted July 14, 2015 Not circumference, radiius and yes if a regular port of a given length is kerfed later on the effective length will be less than the original and therefore will tune higher. Link to comment Share on other sites More sharing options...
dsw422 Posted July 14, 2015 Author Report Share Posted July 14, 2015 Not circumference, radiius and yes if a regular port of a given length is kerfed later on the effective length will be less than the original and therefore will tune higher. Ok. Thanks.. 2014 Ford Focus SE Sedan Factory Sony 10 Speaker Sound System 1994 Ford Bronco Dual head unit (i kno) Sony door speakers Kenwood Rear Speakers Custom Center console in the works. will house an NVX NSW10" https://m.facebook.com/WinnsCustomCarAudio/ Link to comment Share on other sites More sharing options...
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