Yep, WinISD is a great help! But precise speaker data input is a must. Have stepped on that rake many times

@@KarlisZalitis yea the parameter inputs are touchy

Hey! I guess one of the main benefitsis driver control in passband region - from what I've read, the less cone moves the less distortion. Also this helps to protect the driver from mechanical damage. Better loading allows for bigger boxes thus more effective output. But all of this has to be balanced with port size to avoid ringing or Air turbulence. And yes, usually bandpass boxes are bigger. In short - it depends :D

40/70 tuning seems to be just fine :) But chamber volume also is important. You can play around with box responses using winISD, it's easy to use and free :)

From what I have read, the port area in cm^2 divided by volume in liters should be at least 3,6. But this depends on many other aspects - shape of the port, cone displacement volume, available space etc. Also - the port should be as big as possible, but I keep the air velocity above 16m/s. There will be soon a video, where I take a deeper dive explaining ports for my latest subwoofer build

You should really do a video about port areas because there's no videos on KZfaq explaining it in depth. I'm building a parallel tuned 6th order for a skar ddx 15. Skar recommend 64 square inches of Port area for 4 cubic feet of box space, which is what my low chamber would be. The high chamber would be half of that size which would be 2 cubic feet. Should the port area for this chamber also be half of the port area of the low chamber?

Did some quick math, Skar seems to line up with the 3.6 coefficient I mention earlier. The short answer - yes, for the smaller chamber half of the port area should be fine. But this comes with many asterisks :D Have you tried to plug the numbers in WinISD?

I will try it, thank you.

Supongo que esto será para tener un menor rango de error a la hora de fabricar un cajon de sexto orden, ya que con los puertos individuales se evita totalmente el cortocircuito acústico evitando que se cancele el sonido, incluso hay diseños con ports individuales donde un port queda al frente del cajón y el otro queda en la parte trasera del cajón, lo cuál personalmente me parece mas ideal ya que logramos un sonido mas expansivo evitando que las ondas de sonido positivas que salen de un port se encuentren con las ondas negativas que salen por el otro port...

It's the HiFi lossless fine strand tripple earthed house wiring. :D

If you're interested, send me an email - kzdesignlv@gmail.com :)

Yes, that is correct. Working on laminar ports for my future projects

Why?

Yes? :)

@@KarlisZalitis i am from brazil... i speak only the basic of the english I want know 33hz? 28hz?

@@KarlisZalitis how many hz

Oh, the tuning? It's 31Hz for the low tuned chamber and arround 70Hz for the high tuned chamber

You should hear it full crank in my Jeep - sounds nice :D

Yep, you're right - this was only my second attempt at 6th order box, so the tuning is a bit off. And also at high volumes there is a little bit chuffing in ports