Backloaded Horn Speaker

[DrBoar]

If you use the driver only in the low range say below 400 Hz then the radiation from the back is the same as from the front and then inward facing driver is OK. Having the magnet system facing outside improves cooling as well.
Using the driver fullrange facing into the horn will not work well as the central parts of the cone (dustcap or small extra cone) is the main contributor of the high range.

 

[hm]

fullrange facing into

i do it over years in my double horns

 

[sreten]

You need to look up some speaker design software.
As others have said your speaker is way too small for bass.

The sound from the rear obviously travels at the speed of sound around the bends.
It should be in phase with the top output by the time it reaches the exit of the cabinet.
Your short path will not be long enough for this to happen.

Hi,

It will happen albeit at a high frequency, but that is not the point.

The bass cut off will be the 1/4 wavelength of the path length.

rgds, sreten,

 

[FirstOff]

If you use the driver only in the low range say below 400 Hz then the radiation from the back is the same as from the front and then inward facing driver is OK. Having the magnet system facing outside improves cooling as well.
Using the driver fullrange facing into the horn will not work well as the central parts of the cone (dustcap or small extra cone) is the main contributor of the high range.

Ah, okay. Thanks for the explantion.