Re: Port bracing question
I would add the bracing to help with flow ! Might effect frequency in hZ ( possibly higher frequency ), the "Hit" may be a lil more, if "chuffing" is not a concern , go for it.
Re: Port bracing question
Making the air passage smoother is usually a good thing. Just be careful about making the corner wedges too large because then you'll be adding a narrow restriction to the air passage in that spot. The impact on tuning might result in the port behaving as if it were slightly shorter due to the reduced air resistance, but I'm not sure if it would be very noticeable. The 90-degree turn of the port on the inside of the box (top-most red triangle brace) would make the port behave as if it were slightly longer and the effect can be estimated with something called an "end correction" factor.
Re: Port bracing question
^That^ and maybe round nose (Bull nose) over the male section with a router bit?
1 Attachment(s)
Re: Port bracing question
As long as dimension A isn't less than dimension B, you should be good
Attachment 7800
Re: Port bracing question
Quote:
Originally Posted by
BigAl205
As long as dimension A isn't less than dimension B, you should be good
Yeah, that!
Re: Port bracing question
Cool. Thank you all for the input.
Re: Port bracing question
Look into round flared ports too. If you can fit them they offer higher efficiency over slot ports because they have the smoothest air flow. These are what I use most of the time. https://www.parts-express.com/precis...e-kit--268-352
Re: Port bracing question
Quote:
Originally Posted by
JCsAudio
I second this recommendation. Smoother airflow = reduced vent noise per vent area compared to ordinary slot ports. There are additional sizes and accessories: https://www.parts-express.com/brand/precision-sound/285
Re: Port bracing question
Quote:
Originally Posted by
Surfer J
I am about to build a new ported box. As I was designing my box I was thinking of adding small braces in the corners of the port to smooth out air flow. My question is do the small braces effect port length calculations or box size? I am wondering about the red areas.
Attachment 7797
I believe that you'll need to slot to vent outside the box... ;)
IMO...
At least round over the "A dimension" across from the red bits... that may be more critical than the deep corners where the wind never really is able to get to. The wind should be very stressed there at the male side, and likely to shear away from the sharp corner cause some noise.
If we take the flared round vent as being superior to slot in terms of smoothness of flow...
Then in the limit... one gets to a Passive Radiator having the least amount of chuffing, tumble and swirl.