First, the Steradian still incorporates a notch filter to help ease problems associated with the typical 8-ft distance between the floor and the ceiling.
Second, the Steradian incorporates circuitry that works to increase stereo separation at lower frequencies.
Third, the Steradian still incorporates a filter that changes your Focus speakers from a 4th-order system on the bottom end (the natural characteristic of a vented system) into a 6th-order system with a lower cutoff frequency but a steeper rolloff below cutoff (there ain't no such thing as a free lunch).
Finally, and probably of most interest to Focus owners, the Steradian allows the listener to "dial in" the bottom end of his or her Focus speakers by providing a variable bass contour that is designed to work in harmony the room gain that exists in the listening environment.
Legacy Whisper ($12,900 -- price includes a dedicated Steradian
processor) Review forthcoming.
When I cranked the Steradian
back up to its normal setting for my room, put the Levi disc back in the player, and punched the start button, the full sound of the Atlanta Symphony soon made itself welcome in my room, and there was no doubt that this was a recording to be reckoned with.
If the communication requirement is for the entire quadrant (hemispherical coverage), the function is normalized by [Pi]/2, the solid angle in steradians
in a single quadrant.
2]/4[pi] (where G is the gain) and integrating over all 4[pi] steradians of space, the total power delivered to the load can be calculated.
5] steradians, an expression can be obtained for the noise flux density of the sun (in W/[m.