Tiny Midrange - Can you make it happen?

[spadez]

Hi,

Long story short, Ive been searching the web for ways to make a 75-85Cubic Inch Midrange driver which is capable of delivering good sound performance starting at around 90-100Hz. Here are some of my ideas:

1. Use a passive radiator setup like the B&O. In my mind, passive radiators help decrease the frequency, so it will help it cope with the lower frequencies.
2. Add weight to the driver to create a lower frequency output and cover the higher frequency end with a tweeter.
3. Use baffeling inside the speaker to help cope with the small volume.

I want to know how I can make this happen. B&O have managed and the Bose cubes have suprisingly good low range frequency. How can I do this for myself?

Regards,

James