Specifications
 
Sensitivity: 87 dB / watt / m
Nom. impedance: 4 ohms (SE versions drop to 2 ohms above 5 kHz. As there is little current flowing there, this is not a problem for most amplifiers).
 
Standard Version
	
6.5″ long throw bass driver, tuned to 28 Hz, running without crossover.
	
4″ custom-made paper cone bass-midrange driver, 1st order low pass filter, no high pass filter, apple tree phase plug, maple wood cone mounted to magnet.
	
3″ widebander, 1st order high pass filter, unique electromechanical parallel resonator installed.
	
Internal wiring orientation-optimised silk-wrapped high-frequency stranded litz.
	
WBT NextGen binding posts.
	
Rear ambient tweeter.
 
SE Version
	
Added electromechanical parallel resonator to bass-midrange.
	
Added Bybee Quantum Purifiers.
	
Added proprietary phase linearization network.
 
SE+ Version
	
Added electromechanical series resonators to all 3 drivers, added parallel resonator to bass driver, all parallel and series resonators of STAGE II type.
	
Added Steinmusic Speaker Match Signature.
	
Added Harmonix Tuning Bases to widebander.
	
Mundorf Silver Gold Oil main capacitor for widebander instead of Obbligato Premium capacitor.
	
Swing Base included
 
Trees
Choose from walnut, oak, ash tree and cherry.