When I will use bass radiator passive speaker and how?

[learning]

I want to know about when I can use bass radiator passive speaker for speaker box design and how I can do it? Please tell me.

 

[shortbus=]

Why not just Google before asking here? Then ask questions about what you don't understand? That is what "learning" is all about, it's not just a name to use online.
https://en.wikipedia.org/wiki/Passive_radiator_(speaker)

 

[learning]

Why not just Google before asking here? Then ask questions about what you don't understand? That is what "learning" is all about, it's not just a name to use online.
https://en.wikipedia.org/wiki/Passive_radiator_(speaker)

Sorry for your inconvenience! I will keep it in mind.