Omni- TL WITH 8" AN, possible practical?

[carl bailey]

Hi Guys,
First post.
Am looking into building a Omni- TL design to use the 8" Audio Nirvana driver. Thinking of using the Audio Nirvana 8" firing up from an approx 1m triangular with heavily radiused corners (when viewed from above) case with sides approx 12" across. That design should easily give me 2m in line length to play with.
Basically envisage the 8" driver mounted at the top, firing up, in the center of the top of the speaker with a tube from the bottom of the 8" driver and sealed to it with the tube then going to within a few inches of the bottom of the speaker case and then returning to exit around the outside of the 8" driver.
Is having the open end exiting around the circumference of the driver a good/bad idea?
How would adding an extra sub to the bottom of this design change the property's of the TL?

I'll do a few sketches and upload later. Just wanted to get things started. Sure you know how it is when inspiration strikes. Just have to got on with it
Carl


Any input is appreciated. Not built any speakers for 20 years so am right out of the loop and have a big learning curve ahead.

Thanks guys, looking forward to more input.

[dsrviola]

....

[carl bailey]

The highs on a driver like that are very directional. With the driver firing straight up without any kind of diffusor in front of it, it's going to sound muffled and lacking in air to a typical seated listener.

Sorry if it,s not clear but that is a diffuser on top of the cabinet.