ZWBR enclosure

[StevenP]

Hello,

Does anyone know anything about the zwbr enclosure used in these youtube demonstration videos, link to one of them below:

YouTube

I did a quick search, but found no useful info regarding plans, design, construction, etc.

Has anyone built or heard this design? The boxes seem to sound good in the videos.

Thanks.

Steve

 

[GM]

It's a variation of double bass reflex [DBR] except with a two stage final vent to somewhat critically damp the vent.

GM