BigPimpin91 Posted September 12, 2011 Author Report Share Posted September 12, 2011 nah to do what i was talking about, you'd wind up obstructing those upper ports. i was talking about just a 10" wide board going accross directly under each sub. That's what I figured hence the reason I posted the picture. I will agree that this is not the most efficient box I've designed but it's done every thing I wanted it to. Just looking for input on how I should build the next one. BigPimpin91's Banging Music Link to comment Share on other sites More sharing options...
smokeumtires Posted September 12, 2011 Report Share Posted September 12, 2011 You need to make a normal slot port box for once in yo damn life fucker!!!!! Link to comment Share on other sites More sharing options...
dwright27 Posted September 12, 2011 Report Share Posted September 12, 2011 Box in the area behind the box. Make sure no air can go own beside the box or where the ports are. Like do beauty panels from the rear port holder to th front of the box 2006 F-150 4 DC XL M2 18's Walled Daily Driver XS Power 4 DC 3.5kw Team DC Team S.P.L. Lot of Audio Technix and 1/0 DC Audio Dealer American Bass Dealer XS Power Dealer Audio Technix Dealer Link to comment Share on other sites More sharing options...
HHR Ed Posted September 12, 2011 Report Share Posted September 12, 2011 Box already looks too small. mine was about 8.5 cubes. Going smaller will do 2 things. 1. Raise the frequency to be supported with port tuning. That is to say, the F3. If you have a tuning calculator you can check this for your subs. 2. Increase impedance rise. Which can lower efficiency but also increase durability of the woofers electrically, but increased cone pressure can decrease mechanical durability. In my mind, SPL potential will be reduced for the sake of adding a 2nd amp. I wouldnt do it. Ed Lester ShowtimeSPL Host Showtime Electronics Video MarketingMy old Build Loghttp://www.stevemead...08/#entry511451http://www.youtube.com/showtimespl 5 time dB Drag Finalist Last ride 2007 HHR, current dB 153.5 and bass race 149.4 dB. 153.0 dB on music New Ride, 2008 HHR SS. Build under way. Loudest score ever = 171dB 2009 dB Drag Racing, North American Points Champion Link to comment Share on other sites More sharing options...
01 S-10 Posted September 12, 2011 Report Share Posted September 12, 2011 Box already looks too small. mine was about 8.5 cubes. Going smaller will do 2 things. 1. Raise the frequency to be supported with port tuning. That is to say, the F3. If you have a tuning calculator you can check this for your subs. 2. Increase impedance rise. Which can lower efficiency but also increase durability of the woofers electrically, but increased cone pressure can decrease mechanical durability. In my mind, SPL potential will be reduced for the sake of adding a 2nd amp. I wouldnt do it. I thought smaller boxes had less impedance rise? TDH FTW !!! Link to comment Share on other sites More sharing options...
HHR Ed Posted September 12, 2011 Report Share Posted September 12, 2011 Box already looks too small. mine was about 8.5 cubes. Going smaller will do 2 things. 1. Raise the frequency to be supported with port tuning. That is to say, the F3. If you have a tuning calculator you can check this for your subs. 2. Increase impedance rise. Which can lower efficiency but also increase durability of the woofers electrically, but increased cone pressure can decrease mechanical durability. In my mind, SPL potential will be reduced for the sake of adding a 2nd amp. I wouldnt do it. I thought smaller boxes had less impedance rise? Nope, most of the time its bigger boxes that have less rise. There is a peak point though Ed Lester ShowtimeSPL Host Showtime Electronics Video MarketingMy old Build Loghttp://www.stevemead...08/#entry511451http://www.youtube.com/showtimespl 5 time dB Drag Finalist Last ride 2007 HHR, current dB 153.5 and bass race 149.4 dB. 153.0 dB on music New Ride, 2008 HHR SS. Build under way. Loudest score ever = 171dB 2009 dB Drag Racing, North American Points Champion Link to comment Share on other sites More sharing options...
BigPimpin91 Posted September 12, 2011 Author Report Share Posted September 12, 2011 You need to make a normal slot port box for once in yo damn life fucker!!!!! My two boxes were slot, Buddy. Loved my AQ box when I had it. Box already looks too small. mine was about 8.5 cubes. Going smaller will do 2 things. 1. Raise the frequency to be supported with port tuning. That is to say, the F3. If you have a tuning calculator you can check this for your subs. 2. Increase impedance rise. Which can lower efficiency but also increase durability of the woofers electrically, but increased cone pressure can decrease mechanical durability. In my mind, SPL potential will be reduced for the sake of adding a 2nd amp. I wouldnt do it. It's kind of sad knowing I have double the power available and not being able to use it. What would you recommend to optimize what I have now, Ed? I just want to hit that 150 once and I'll be happy. Also, are you saying that because my box is 7 cubes, it could actual be causing the subs to move more since there is more back pressure? BigPimpin91's Banging Music Link to comment Share on other sites More sharing options...
StrongmanDesigns Posted September 12, 2011 Report Share Posted September 12, 2011 Have you had the current box metered? How many ports are you using and what size? Link to comment Share on other sites More sharing options...
BigPimpin91 Posted September 12, 2011 Author Report Share Posted September 12, 2011 Have you had the current box metered? How many ports are you using and what size? Getting it tested tomorrow to compare it to the scores I got with my MCD's. Eight 4in at 23in long. BigPimpin91's Banging Music Link to comment Share on other sites More sharing options...
Ric Thornton Posted September 12, 2011 Report Share Posted September 12, 2011 first thing I would recommend to try is ONE port instead of all those small ones... also... sorry for not knowing but I didn't see what kind of vehicle... and how this current box is setup in the vehicle. that can help too... I'll look again to see if I can answer my own question though... Link to comment Share on other sites More sharing options...
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