Include Volume of Port in Volume of Enclosure?

Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=59224
Printed Date: July 14, 2025 at 9:35 AM

Topic: Include Volume of Port in Volume of Enclosure?

Posted By: KillJoy149
Subject: Include Volume of Port in Volume of Enclosure?
Date Posted: July 11, 2005 at 2:57 PM

Hiya Forum!

I hate to have my first post being something so stupid, but, sometimes you just gotta ask.

I am going to be building an enclosure for a single 12" driver. I am wanting to use a rectangular port. My question is this:

Do I include the volume of the port itself, and the material used to construct it, in the volume of the enclosure?

For example: Say the box needs to be 1.5ft3 Does this include the volume created by the port, or is it in addition to the port?

Hopefully this is a very stupidly easy question.

KillJoy

Replies:

Posted By: forbidden
Date Posted: July 11, 2005 at 2:59 PM

Add the total displacement of the port to the volume of the box (so all materials added as well), so your gross volume might be 1.61 cu.ft. and the net volume 1.5 cu.ft.

-------------
Top Secret, I can tell you but then my wife will kill me.

Posted By: KillJoy149
Date Posted: July 11, 2005 at 3:14 PM

Wow! That was quick!

That is what I thought, but I just wanted to make sure.

Thanks a bunch!

KillJoy