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iTrader: (2)

specs can be found here
http://www.rockfordfosgate.com/rftech/library/2000/5_Subwoofers/LIT10683_DVCwoofers_MAN.pdf

i was thinking 5-5.5 cubes tuned to 32ish but does anyone else ahve any thoughts? i tried messing around with the RE box design thing but i cant get it tuned above 20

box can be 33"wide, 16" tall, and 24" long(maybe abit longer)... so i can only have a port thats 1.25"s wide..... should i try and do round ports or something? i have no idea how to come up with port calculations

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iTrader: (2)

from a different board, maybe its jsut me but doesnt 20htz seem really low? lol

Going by my calculations those subs need MAJOR air space and can be tuned down lowwwwwwwwww. The box frequency should be nearly 20 hz (again, by the formulas I have) but seeing as you want to use two subs, I believe you are going to sacrifice some of your low end frequency. Your cut-off frequency of -3db will be right about 30hz using two of those subs in roughly 5.5 cubic feet, versus a single sub in 5.5 cubic feet with a cutoff frequency of about 22hz. You should expect EXCELLENT loudness in the 50-100hz range however with the two subs, somewhere near +4-5db.

All in all, I think you'd be well suited with 5.5 cubic feet with a box frequency of 20hz, you'll have great bass down to about 30hz that will vibrate your insides, lol. The formulas I used can be found in "The Car Stereo Cookbook" by Mark Rumreich, I found it at Barnes and Nobles like 8 years ago, but they now have a second volume out now. The same equations and graphs can be found in both books, highly recommend picking it up!

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iTrader: (2)

anyone??

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iTrader: (2)

i hate this trunk!!! ****ing lumina! lol the bottom of the trunk is like 38" wide but when it comes up to hte top of the struts i can only go 34" wide which is screwing with the space that i need for my port.... best i can come up with is this box thats tuned to 23.8hz


any suggestions? how would it sound if the subs where installed on the top of teh box(firing into the sky) and the port in the front?? i really wanna go ported with this install

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iTrader: (2)

i just thought of something, i can put a 3" port in the middle of the subs and still ahve space to mount the subs jsut barely... 15.5"(sub)+3"(port)+15.5"(sub2)=34"s wide, but that only bumps me upto 27.37Hz, i wonder if i should go with 2 round ports??? RF says 2.5cubes per sub with two 4"X8" circle port will be 35Hz

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iTrader: (2)

if anyone cares, im going with 5.6cubes@35Hz...build has started already