How do i find out what this box is tuned to? Think i have all specs?

[npcout 10+ year member]

Is there a calculation I can use to figure it out myself? I believe I have all of the specs?

BOX 1

Box volume: 0.89 cubic feet

H- 11.5

W- 16

D- 15

1 port

Port Diameter- 1-3/4"

Port Length- 19-1/2"

Total port volume: 0.21 cubic feet

BOX 2

Total Box volume: 1.0 cubic feet

H- 14

W- 16.5

D- 14

Port volume: 0.2 cubic feet (per port)

Port dimensions: 19"D x 1-1/2"W x 12-1/4"H

Also one last question, typically, the larger the port, the lower the tune? Is that correct? I am just curious, I am new to this!

thanks guys!

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[sobe3yourself. 10+ year member]

tuning > 9000

 

[npcout 10+ year member]

tuning > 9000

You lost me!

 

[Team TH (Donny) 10+ year member]

My calculations were only based off of information provided..

Box 1 Tuning: 16.9 Hz

Box 2 Tuning: 15.55 Hz

Also one last question, typically, the larger the port, the lower the tune? Is that correct? I am just curious, I am new to this!

Well typically the length of port determines the frequency of box while the height and width determine port area, but while you manipulate each of these variables (H/L/W of port) it will slightly affect the frequency/port area depending on which variable was manipulated... So, generally speaking the longer the length of your port the lower tuning you would see...

If you are confused or want to know more about this PM me and from that point I will help you out with this topic...

 

[npcout 10+ year member]

Hmm, that tuning seems pretty low for a stock box.. i copy and pasted the info from the site though..

 

[Team TH (Donny) 10+ year member]

Alright after gaining more info from the sites where these boxes are and after looking at them to find how many common port walls were used I was able to accurately find the tuning...

Box 1 Tuning: 47.68

Box 2 Tuning: 44.36