On a different topic - what is the best way to paint the MDF cabinet? Using roller or a brush? And do I need to sand the whole box first before painting?

Thanks.

The one π, two π, two π tower, three π, four π and eight π loudspeakers are rated for quarter-space.

The five π, six π and seven π loudspeakers are rated for eighth-space.

The 12π hornsub is rated for half-space.

These radiating angles were chosen because that is the way each of these speakers was designed to be used. Of course, the 12π hornsub will usually be used in pairs or groups. That increased output by 3dB for each doubling of cabinets, if total electrical power remains the same. When voltage remains constant, there is 6dB increase when the number of cabinets is doubled. If placed against a wall, add 3dB. In a corner, add 6dB.