curved slot port design, folding horn guys any thoughts?

[revintage]

Originally Posted by NEO Dan

That's what I'm doing, I've built a few variations of my design.

Great! Give an example with the parameters above, would be exciting to see how far HR is from your IRL measured results.

[NEO Dan]

Below is an example of what you get in HR:

[NEO Dan]

Of course one would have had to measure the tuning to know where it actually is: ~12hz...

[revintage]

Could you publish the *.txt file from Input/Export/Hornresp Record.

Maybe I haven´t read the thread carefully enough but whats the theory behind the "BR" with ultralow resonance-frequency.

[revintage]

Tried when I got home from work and there is no broblem to sim it in HR, albeit with a straight port. But you can also make the port and driver to work without path difference.

But maybe MJKs spreadsheets are better as one can add damping.

[revintage]

Hey guys,
This is what HR says about revbodens box. Placement 1,0*Pi. First with port at the front. The second with port on the rear, path difference 50cm. Third is electrical impedance. Off course no bends and a square or round port.

[revintage]

This is what HR shows when we make the port 43cm long, with it´s opening at the rear.

Going for a pure Onken design we get almost the same result with a 63cm port at the front and F3 at ca 20Hz.

[revboden]

What does the group delay at 22Hz look like between those two, 91.44cm vs 43cm.