Will the port arrangements in the photo below function the same?
The view is down from above the box. In each case the port is a slot that spans the entire cabinet vertically (it forms a rectangle by butting against the walls).
I was thinking perhaps the short sections in the second picture need to be half the volume of the long section or similar?
Thanks
port is a port functions the same.
Far as sharing 2 walls or 3 walls
the correction factor is dramatically different
2 walls
K= 1.723
3 walls
K = 2.227
for the most part rectangle shape sharing walls
has poor efficiency. so tuning appears lower
it is why they are often used.
since the port can be shorter for low tunings.
Qp can be adjusted to see slight change in impedance.
you could use Qp from 80 to 60
end correction is more important as posted
above. since length would be different.
Virtuix Cad has all the usual correction factors
and you can unlock or lock certain variables
to make design easy.
Far as sharing 2 walls or 3 walls
the correction factor is dramatically different
2 walls
K= 1.723
3 walls
K = 2.227
for the most part rectangle shape sharing walls
has poor efficiency. so tuning appears lower
it is why they are often used.
since the port can be shorter for low tunings.
Qp can be adjusted to see slight change in impedance.
you could use Qp from 80 to 60
end correction is more important as posted
above. since length would be different.
Virtuix Cad has all the usual correction factors
and you can unlock or lock certain variables
to make design easy.
Last edited:
ah, I don’t think I was clear enough in the op.
By function, I meant sound the same.. IE if I make the T shaped port in the second picture, what area should the shorter sections be, now that there are two of them rather than one.
I’ve realised now they must need to be half the area of the long section in order to perform the same as the L shaped port in the first picture.
I know that’s probably obvious to most people on here, I just wanted to double-check I had my thinking right.
Thanks
By function, I meant sound the same.. IE if I make the T shaped port in the second picture, what area should the shorter sections be, now that there are two of them rather than one.
I’ve realised now they must need to be half the area of the long section in order to perform the same as the L shaped port in the first picture.
I know that’s probably obvious to most people on here, I just wanted to double-check I had my thinking right.
Thanks
