Omnidirectional Speaker (PPOmniMini)

Here you can see and later hear ;-) an omnidirectional speaker based on a DN110 Tube and the Vifa 9 BN 119/8 also known as Peerless TC9FD 18 08. The box is filled with some acoustic wool. I will update the data here.
The bottom with the reflex tube is calculated for a 35cm long DN110 tube.

Good source for equilizing: http://2pi-online.de/html/demokrit.html

If you need further information, let me know.

Have fun!