Harris4crna, he's not giving you correct information.
The drivers were custom made to Franco's specifications.
I'm looking at the drivers and they dont look like Scanspeak drivers.
Now read this.
http://www.bornrich.com/entry/franco-serblin-s-ktma-speakers-are-a-possession-forever/
Franco Serblin ktema speakers 1
Special attention has been paid to not disturb or soil the central part of the acoustic spectrum. Its the part where the harmonic richness highlights the true timbre of the instruments. The speaker cabinet is a triple arch-shaped structure, with the two lateral front cheeks that are concave and a convex woofer compressor. They have used a 28mm soft-dome tweeter created by Ragnar Lian, one of the famous Danish masters of transducer design. The midrange array comprises two custom-made 4in units in a step-compensated baffle for the ultimate music reproduction.
While the woofers are custom 9in metal cone, piston performance-optimized units, the crossover enjoys a coherent spatial radiation design. Other technical specs include an in-room frequency response of 26Hz to 33Khz, nominal impedance of 4 ohm and a sensitivity of 92 dB/W/m.
The drivers were custom made to Franco's specifications.
I'm looking at the drivers and they dont look like Scanspeak drivers.
Now read this.
http://www.bornrich.com/entry/franco-serblin-s-ktma-speakers-are-a-possession-forever/
Franco Serblin ktema speakers 1
Special attention has been paid to not disturb or soil the central part of the acoustic spectrum. Its the part where the harmonic richness highlights the true timbre of the instruments. The speaker cabinet is a triple arch-shaped structure, with the two lateral front cheeks that are concave and a convex woofer compressor. They have used a 28mm soft-dome tweeter created by Ragnar Lian, one of the famous Danish masters of transducer design. The midrange array comprises two custom-made 4in units in a step-compensated baffle for the ultimate music reproduction.
While the woofers are custom 9in metal cone, piston performance-optimized units, the crossover enjoys a coherent spatial radiation design. Other technical specs include an in-room frequency response of 26Hz to 33Khz, nominal impedance of 4 ohm and a sensitivity of 92 dB/W/m.