from the Cubo12 plans:
Cubo 12 will work with a wide variëty of 12" (and 10”) drivers preferably with an EBP of 100 or higher; Fs (30-52 Hz), Qts (0.20 - 0.37), Vas (50 - 125 L) / (1.77- 4.42 ft^3). Where EBP = Fs / Qts. If you're uncertain if a driver is suited, PM or mail me at questionsaboutCubo.at.gmail.com
Before I decided on the Cubo15 for myself, I had looked into building a couple Cubo12. There was a decent Dayton Audio I decided on, but it slips my mind on the model. I just browsed through the speakers until I found one that matched those specs listed. Lots of brands would have drivers that would do well in it, but The daytons are a budget brand which was why I picked them.
