Does a 1 inch deep waveguide increases atleast 3db of sensitivity?

[rhythmsandy]

Im planning to use a waveguide with shorter depths like 1 and 2 inch deep with diameter close to 8 inch Im looking made up of MDF wood routed accordingly.

I have few doubts that can a 1 inch and 2 inch deep waveguide either it could be radial or soft hyperbolic horn would gain 3db? or slightly more.

As per the data observed on some tweeters with wave guide and without waveguide not just off axis improves but also some sensitivity in the lower frequency of the tweeter region. Which is exactly what Im looking not to have too much peaked gain but somewhat 3db is also great enough.

https://meniscus.lightningbasehosted.com/wp-content/uploads/2015/11/SB26STAC-C000-4-Data-Sheet.pdf

https://meniscusaudio.com/wp-content/uploads/2019/12/SB26STWGC-4-Data-Sheet.pdf

compare the above two tweeters one with waveguide and one without a waveguide. So the boost of 3db happening with the short waveguide?

 

[AllenB]

It's a complex relationship but if you consider that taking something that is meant to be radiating into half space and constraining it to eighth space should give you (up to) 12dB, not considering loading.

 

[norman bates]

Look at the motel cat378, a very short horn.

Horn loading doesn’t help much above 4khz-5khz.

I can find the stuff where Zaph horn loaded a dome tweet.

 

[AllenB]

One thing a good (competent) waveguide can do is to spread out the higher frequencies, causing them to show lower pressures up the top where a dome on its own would be narrowing.