Notoriousj76 Posted February 23, 2012 Report Share Posted February 23, 2012 Getting situated here with my money, but trying to get seriously low with as little money/power as possible. The Plan: 6 American Bass XO 15s Sundown SAZ 3000 Excessive Amperage 200a alt 2 C&DUPS12-540MR batteries As for the 4th order. This will be my first, and my first wall as well. I would appreciate it so so much if some of the experts would view this and help me out here. I'm trying to get a ground pounder that is as low as possible. I am NOT after burps, I'd much rather shake my vehicle apart and make hair fly. So please, If your experienced in building walls/4th orders especially, can you help me out. Ive been playing around with WinISD and cant come up with anything too crazy but compared to the ported. Ive done nothing but research on 4th orders for about a week and I guess I'm just missing something. Unless I make my numbers absolutely ridiculous I cant get a curve that looks desirable. The reason I'm wanting XO's is their fs. But is my goal achievable with that Sub? or am I just being silly by thinking that factor alone will make for a ultra low setup? Quote Link to comment Share on other sites More sharing options...
Notoriousj76 Posted February 24, 2012 Author Report Share Posted February 24, 2012 (edited) Hows this look? I lost output in the bass I dont care for..... But as you can see it's peaking at 30 and stays flat.... Have almost no box rise either untill it gets down in the mid to low 20s Edited February 24, 2012 by Notoriousj76 Quote Link to comment Share on other sites More sharing options...
OldsBoomer Posted February 24, 2012 Report Share Posted February 24, 2012 What's the specs? Try about 14-16 cubes sealed, and a 2.3-3.0 ratio. Quote Suburban Coming Soon Link to comment Share on other sites More sharing options...
Notoriousj76 Posted February 24, 2012 Author Report Share Posted February 24, 2012 (edited) Specs on the box are in the picture. On the right there is the ported box I have mocked up to compare to the 4th order on the right. 45 cubes is a bit large sounding though for net volume. I'll keep plugging and taking suggestions. thanks Edit: For lower tuning, shouldn't the sealed side be the large half? This is what I have heard at least.... also what kind of port tuning should I shoot for? I'm getting very peaky curves that are not looking so good in the upper 20s, which is where I want things to be strong still. Anything in the 28-40 hz region is where I want my meat and taters spl to come from. Edited February 24, 2012 by Notoriousj76 Quote Link to comment Share on other sites More sharing options...
Notoriousj76 Posted February 24, 2012 Author Report Share Posted February 24, 2012 (edited) how about this one? More reasonable looking curve and volumes. Cabin gain picks up around 50 so it should still be fairly balanced. Edit: The box rise says that I'll be rising to almost 4 ohms at 32 hz.... will this make cut all my power at that freq? Edited February 24, 2012 by Notoriousj76 Quote Link to comment Share on other sites More sharing options...
Notoriousj76 Posted February 25, 2012 Author Report Share Posted February 25, 2012 (edited) Bump Edited February 25, 2012 by Notoriousj76 Quote Link to comment Share on other sites More sharing options...
Notoriousj76 Posted February 25, 2012 Author Report Share Posted February 25, 2012 Any experienced box builders wanna throw in their 2 cents? Really really want some input here. There will be pics when I get around to building if that's any incentive. Quote Link to comment Share on other sites More sharing options...
Colin - STAPUFT Posted February 26, 2012 Report Share Posted February 26, 2012 Good luck to you- wish I could help, but I know SQUAT on Bandpass. Theory yes, practice no. I never could get anything to model right when using Bass Box Pro so I said forget it. I know there are folks on here that have Big Bandpass experience. Quote 12 - 12"s in the STAY PUFT 1989 Chevy Astro Build & Comment Log Un-Interrupted Build LogYouTube Channel Chevy Trailblazer 5.1 Dolby Digital DTS Install You have a beard of a mysterious sea captain. I would follow you to hell and back. Link to comment Share on other sites More sharing options...
rubbernutz1 Posted February 26, 2012 Report Share Posted February 26, 2012 Good luck to you- wish I could help, but I know SQUAT on Bandpass. Theory yes, practice no. I never could get anything to model right when using Bass Box Pro so I said forget it. I know there are folks on here that have Big Bandpass experience. yeah me and colin just draw it out on paper and say YA THATS BOUT BIG ENOUGH and just build that bitch to fit in the car Quote Link to comment Share on other sites More sharing options...
TechSys Posted April 13, 2012 Report Share Posted April 13, 2012 Try this and see what happens. 2cubes per sub for 12cubes. 24cubes on the ported side tuned somewhere between 40-45Hz. The sealed section develops the lower frequencies and the ported section develops the high end frequencies. You could, possibly, bring up the sealed to 2.5 or 3cubes per sub, but keep the ported section doubled (2.5 x 6 would be 15, so 30 ported. 3 x 6 would be 18, so 32 ported). That's about as far as I, perosnally, would take it. Quote Team Pinnacle / Team SouthEastSPL / Team SoundStream / Team GPI / GPI Sales Rep for Florida and Georgia Link to comment Share on other sites More sharing options...
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