port size with 1 or 2 subs

Home / the12volt's Install Bay / Car Audio / port size with 1 or 2 subs (

Topic Closed)

Welcome Guest :)

Members

Search

Register

Login

< Prev Topic Next Topic >

thor492001

Member - Posts: 10

Joined: April 14, 2009

Location: Iowa, United States

Posted: January 11, 2013 at 2:25 PM / IP Logged

Does the port size change based on the amount of subs? Is the size (Cubic FT) the deciding factor? I realize the subs will take up some space too.

Back to Top

DYohn

Moderator - Posts: 10,741

This member has made a donation to the12volt.com. Click here for more info.

This member has been recognized as an authority in Electrical Theory. Click here for more info.

This member has been recognized as an authority in Mobile Audio and Video. Click here for more info.

Joined: April 22, 2003

Location: Arizona, United States

Posted: January 12, 2013 at 10:34 AM / IP Logged

Both factors are in play. The size of the enclosure determines it's tuning frequency with any particular port size, but multiple drivers produce more SPL per watt than a single driver so that will determine port air velocity. You want to choose a port size that will create the tuning you require while making it large enough that the port air velocity stays low.

Support the12volt.com

Back to Top

thor492001

Member - Posts: 10

Joined: April 14, 2009

Location: Iowa, United States

Posted: January 12, 2013 at 11:02 AM / IP Logged

how do i calculate the larger port size. i'm building a box 25" X 15" X 15" with a 2" Slotted port to tune to 34hz. i'm able to get the length for one driver from the RE audio box designer.

Back to Top

DYohn

Moderator - Posts: 10,741

Joined: April 22, 2003

Location: Arizona, United States

Posted: January 12, 2013 at 11:45 AM / IP Logged

The length of the port to tune your enclosure to 34Hz will be the same no matter how many drivers you use (as long as you take into account the volume occupied by the drivers.)

Support the12volt.com

Back to Top

Sorry, you can NOT post a reply.
This topic is closed.

Printable version

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot delete your posts in this forum
You cannot edit your posts in this forum
You cannot create polls in this forum
You cannot vote in polls in this forum

Search the12volt.com

Follow the12volt.com

Disclaimer: *All information on this site ( the12volt.com ) is provided "as is" without any warranty of any kind, either expressed or implied, including but not limited to fitness for a particular use. Any user assumes the entire risk as to the accuracy and use of this information. Please verify all wire colors and diagrams before applying any information.

port size with 1 or 2 subs

Sorry, you can NOT post a reply.This topic is closed.

Sorry, you can NOT post a reply.
This topic is closed.