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View Full Version : How to figure out my ports?



Mugen
12-23-2006, 03:54 PM
I'm using this box plan for my Ranger:
http://tefrik.net/uploader/files/1/typerbox5kc8.jpg
http://tefrik.net/uploader/files/1/Type%20R%20box.JPG

It's 1.78ft^3 internal volume, before sub displacement. I'll be putting 2 AA Assassin 8"s in it. How big of pipe do I need for the ports (4" or 3"?) and how long would I need to make them? I'm putting a port on each side, so what do you guys think? Is there a formula I can use or is it a program? I'm thinking 38hz would be good for these, maybe 35?

jaco
12-23-2006, 03:58 PM
http://www.carstereo.com/help/Articles.cfm?id=31

use that port caculator

Mugen
12-23-2006, 04:19 PM
Alright, for 35hz @ 1.78 it said 6.01" diameter, so two 3" should be enough. But when I do length, I put 2 ports, 1.78ft^3, 35hz and 3" diameter. It says port length needs to be 15.28". Is that between both ports, or does each one need to be 15" long?

LinxuS
12-23-2006, 04:32 PM
Each one needs to be that length.

So do 2x 15.28" long, 3" diameter ports, one on each side.

Mugen
12-23-2006, 04:52 PM
Alright, thanks. Does 35hz sound good for 8" Assassins or should I go higher/lower?

regal8r
12-23-2006, 05:22 PM
id go higher...it all depends on how u want ur subs setup...id so 43hz or so...i have a couple 10s tuned to 40 and they sound pretty **** good and still get loud..

springy101
12-23-2006, 05:28 PM
id go higher...it all depends on how u want ur subs setup...id so 43hz or so...i have a couple 10s tuned to 40 and they sound pretty **** good and still get loud..

those onyx 10s are way different than his assassins though

Mugen
12-23-2006, 05:35 PM
those onyx 10s are way different than his assassins though

So you're saying stick with 35? I wouldn't go over 40, that'd be way to high. I was just thinking maybe 38 since AA recommends 40.

springy101
12-23-2006, 05:43 PM
i would stick with 35, or maybe even 38. i doubt those 8's can pound out the lows anyway. do a search cuz i know there have been a ton of other threads about assassin boxes.