end correction factor with round ports

[maldecido33 10+ year member]

does one exist? the port obviously doesn't share a wall with the enclosure; but it will be either resting directly on the enclosure wall, or an inch or two above it. do I need to take this into account at all w/ my effective port length?

if so, I'm using a 4" diameter port(two in fact). what would the correction factor be per port, if one even exists?

Click to read more...

 

[Beat_Dominator 5,000+ posts]

I'm not quite understanding your question?

Are you trying to figure out the port displacement? Or the necessary lengths to reach a desired tune?

 

[SBLAZER]

i believe measure from port opening back for port length. u can mount em external if u like doesnt matter

 

[406er 10+ year member]

what type of port are u using. are u using areoports or a PCV tube with a routerd edge. if using a PCV use a flanged end if usingPCV just use a free end. imasuming your using WINisd

 

[maldecido33 10+ year member]

i'm using a pen and a piece of paper, with occasional number crunching on a calculator ; thats my version of winisd

 

[saywhat? 5,000+ posts]

end correction for an unflanged port i believe is .823

 

[Moe Lester 10+ year member]

There is no end correction....

did any of you guys even read what he was asking? lol

 

[maldecido33 10+ year member]

thanks, moe

 

[tRiGgEr 5,000+ posts]

As moe said no end correction. Only applys when you use a wall of the box as a wall of your port. IE - slot pot.