87chevyboi Posted June 10, 2012 Report Posted June 10, 2012 2 fi sp4 18" with an interchangeable port, i think this will work. What do yall think? its tuned for 33 hz when i take all the length off it will be 48 hz. My build aka Snow White whats wrong with fat chicks? they are like mopeds, as long as your friends dont see you riding it, they are a blast! hahah I am dumb as a stump. I live in the south and we are all dumb here.
Stee-Z Posted June 10, 2012 Report Posted June 10, 2012 your port area per foot should be more around 16 ish (4)DD 9918's (2)DC 10k 8 6.5" focals 2 DD SS4 mid amps Audison Bit One processor Jl-cl-rlc line driver iPad in dash Dual Irragi 320a alts 8 batcaps 4000's Second Skin sound deadened
RAM_Designs Posted June 10, 2012 Report Posted June 10, 2012 Port area is WAY too small. Those are some high excursion woofers, so plan on using a lot of port to keep port noise to a minimum. Ryan Miskin - owner of RAM Designs I have my PM's turned off, please email at <script data-cfhash='f9e31' type="text/javascript"> /* */</script> 2200+ designs since March 2011...
aleroking Posted June 10, 2012 Report Posted June 10, 2012 need more port area and might want to go bigger on the box because with the bigger port your net volume will be less. 2 fi btl 18s on 2 crescendo 3500s walled in a 2dr 2000 alero build log http://www.stevemeadedesigns.com/board/topic/141663-2-walled-btls-18-on-7k-in-a-2000-2dr-alero/
87chevyboi Posted June 10, 2012 Author Report Posted June 10, 2012 ok thats what i was just looking at lol i put it up then looked at all the numbers n was like damn idk if that will work lol My build aka Snow White whats wrong with fat chicks? they are like mopeds, as long as your friends dont see you riding it, they are a blast! hahah I am dumb as a stump. I live in the south and we are all dumb here.
bkolfo4 Posted June 10, 2012 Report Posted June 10, 2012 If you can get 240 sqin of port, it would be a lot better. . . Current system: 1997 Blazer - (4) Customer Fi NEO subs with (8) American Bass Elite 2800.1s Previous systems: 2000 Suburban - (4) BTL 15's and (4) IA 40.1's = 157.7 dB at 37 Hz. 1992 Astro Van - (6) BTL 15's and (6) IA 40.1's = 159.7 dB at 43 Hz.
87chevyboi Posted June 10, 2012 Author Report Posted June 10, 2012 im still playing around with the calc anybody got any ideas as to what i can do? i wanted to keep the box below window line, and it cnt be any wider, it can be a lil deeper tho. Its going in a 97 tahoe. I still want to keep the interchangeable port. My build aka Snow White whats wrong with fat chicks? they are like mopeds, as long as your friends dont see you riding it, they are a blast! hahah I am dumb as a stump. I live in the south and we are all dumb here.
87chevyboi Posted June 10, 2012 Author Report Posted June 10, 2012 bk i got it when i change the height to 19 and make the port 8 by 30 inches but i cnt get it tuned down to what i want. smh i dont understand with this shit lol i normally get somebody else to draw up the boxes and i just build em for customers but now i am trying to do it by myself and its a bitch lol when you dont know what you doing My build aka Snow White whats wrong with fat chicks? they are like mopeds, as long as your friends dont see you riding it, they are a blast! hahah I am dumb as a stump. I live in the south and we are all dumb here.
87chevyboi Posted June 11, 2012 Author Report Posted June 11, 2012 bump for some info played around on it some more today and made the box a little bigger and changed the port size a little. I got about 13.93 per area for port and 16.15 net volume on 48 hz for spl. I figure i just make my port a little smaller and longer to bring it down to 33 hz so i can have a daily somebody help me out lol also how do i calculate bracing displacement and how would i do that if id do lets say a dowel rod or a threaded rod My build aka Snow White whats wrong with fat chicks? they are like mopeds, as long as your friends dont see you riding it, they are a blast! hahah I am dumb as a stump. I live in the south and we are all dumb here.
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