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Old 04-14-2012, 07:06 PM   #71
alaskanzx5
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well i had just one of these 12s in a prefab box that for some reason had 2 ports with different tunning. it had 1 earo port that was suppose to be at 38hz and then its had a second chamer inside the box that looked kinda like a L shape slot port but then that chamber was ported with a earo port at 42 hz. that peaked at 48hz. then i had a box with to small of port erea tuned to 41 hz that peaked at 45hz ( 1 12 here to ). the box was built using the box design in the manual for the sub. but the guy that i know at the shop i go to knows a lot about rockford and talked to the rockford tech and they agreed with a slot port like my design it would be loudest at or near 43-45hz.
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Old 04-14-2012, 07:07 PM   #72
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Quote:
Originally Posted by 02Zetechse View Post
tune your box 3-4 hz below what u want to peak at ... Not to hIjack but a sample of what Im bringin to the comp

show us pics of the wall. any numbers yet?
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Old 04-14-2012, 07:20 PM   #73
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still waiting on recone money then Ill be putting up #'s thats all Im waiting on
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Old 04-14-2012, 07:29 PM   #74
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Look into a ABC box and see if itll work for your application
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Old 04-14-2012, 10:39 PM   #75
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I wouldnt go ABC box just cause of the rule of thumbness about it. As far as I know there isnt really math out there for you to go by at least the last time I checked. Im still thinking you should do a aero port box. Keep one set of ports that are tuned to the peak frequency of your car for when you compete and then another set for daily.

I sure as help hope you go up more than 1db from going to a pre fab to a custom box. I hate to nut hug but look up PWK designs they are 50 dollars. but he will use his software and take your given cabin geometry your subwoofers T/S parameters and then model different kinds of enclosures untill he finds you desired response. Which would be the loudest possible at your cars peak. might be worth it. Of course you can download the same software he is using but it will take you quite a while to figure out how to use it correcty
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Old 04-15-2012, 10:49 AM   #76
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i had a pre fab abc box before and it did a great job for being prefab but id rether keep it simple.
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Old 04-15-2012, 12:23 PM   #77
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maybe once you are back in the area, we could build one and see if we can get it to work as a multi purpose box for you
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Old 04-15-2012, 06:47 PM   #78
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i dont even know if im gonna move now. my wife just started a new job working at an optical place and theyre going to pay for her to become a certified optricain or however you spell that.
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Old 04-16-2012, 07:02 AM   #79
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Oh sweet I wish her the best!
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Old 04-16-2012, 10:42 AM   #80
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yeah well we are have a 3rd kid in 6 months so she is gonna start her book work for it soon so that by the time she goes back to work after having the kid she will be certified.
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