The Sawafuji SFD-INNO-20 is a ribbon speaker.
Andy Garcia (November 21, 2004): Sawafuji Class A model SFD-INNO-20 thin panel speakers. Only 2 inches deep. These were manufactured by Dynameca Co. of Japan and were imported directly from Japan a number of years ago. To the best of knowledge these were not sold in the U.S. making them rare and collectible. These speakers utilize a special electrostatic speaker design. Instead of a voice coil, a wire crosses the element to faithfully reproduce sound in a more efficient and reliable manner, batter capturing the nuances of the music. Each speaker enclosure contains:
QTY 4 approx. 2 inch tweeters
QTY 8 approx. 3 inch midrange
QTY 8 approx. 6 inch woofers
For a total of 20 speakers in each thin line cabinet. Rated conservatively at 120 watts each. The dimensions are:
Height approx. 36 inches
Width approx. 29 inches
Depth approx. 2 inches