inside a folded horn

[soundhead]

Can someone explain the inter foldings inside a folding horn

What does it do
Does the foldings affect the feqs

[AndrewT]

the foldings change a long straight horn into a more compact box that can be moved around more easily.

[tinitus]

Someone once claimed that there should be foldings close to driver, as it filters out some of the midrange
Others say that roundings are not needed
Some may even claim that it works better without roundings

[planet10]

Everytime we get a "bulge" in a resonant pipe, that bulge acts as a low pass filter. By not making the folded path as "smooth" as possible with roundings or corner deflectors you can gain a lot of low-pass into your horn/resonant pipe -- usually a good thing.

dave

[Volenti]

Originally Posted by planet10

Everytime we get a "bulge" in a resonant pipe, that bulge acts as a low pass filter. By not making the folded path as "smooth" as possible with roundings or corner deflectors you can gain a lot of low-pass into your horn/resonant pipe -- usually a good thing.

dave

I have noticed this effect in my designs, it's pretty signifigant. (allbeit with folded TL's, but same principle)

[oilcanracer]

Originally Posted by planet10

Everytime we get a "bulge" in a resonant pipe, that bulge acts as a low pass filter. By not making the folded path as "smooth" as possible with roundings or corner deflectors you can gain a lot of low-pass into your horn/resonant pipe -- usually a good thing.

dave

does that make it a lot less efficient or just a little?

[littlemike]

It alters the bandwidth. If the higher frequencies don't make it "around the corner" so to say, the enclosure attenuates the higher frequencies. This can be a good or a bad thing, depending on your desired outcome.