View Full Version : Another port calculation

03-02-2005, 09:35 PM
Im about to build me a ported box for my 12" w6v2. This is my first time to build a ported box. People have told me to tune it to the low 30s or high 20s, so that I shal. I was looking on JL Audio's website and they have a set of plans for a ported box but it does not say what it is tuned to. I have tried to figure it out by using different calculators on the internet but haven't got it yet. Maybe I'm just an idiot, who knows. Could anyone help me out and tell me what this box will be tuned to? Here are the plans:

26.25 x 14 x 13 - 1.5 net volume

1.5 x 12.5 x 29 (Slot Width x Slot Height x Slot Length)

Thanks a lot!

03-03-2005, 02:13 PM
Looks like you're right around 28 Hz... you may want to make your port a little wider though, if you increase the port width from 1.5" to 2", and keep the rest the same, youll be looking at 33 Hz

03-03-2005, 11:24 PM
Someone on the subwoofer thread told me that this was going to be 33 Hz

03-04-2005, 12:13 AM
It will be 31.25 Hz, and you will get 1.575 ft^3 before driver displacement with those external dimensions and that port area.