Allegra The Allegra is a 3-way floor standing speaker built in 3 separate enclosures. Its exceptional drivers, sophisticated cabinets, and innovative crossovers combine for a highly musical and realistic listening experience. Sound quality: The Allegra combines the exceptional spatial characteristics and low resonance of a mini monitor with the authoritative presence of a large floor standing speaker. Optimization for minimum distortion gives the Allegra exceptionally expressive dynamics and high output capability. As in other Joachim Gerhard designs, the fine resolution of the entire frequency range sets new standards. Tonal reproduction, the location of instruments and voices are accurately rendered. The Allegras coherent presentation allows extended listening pleasure without fatigue for everything a mature listener demands in a refined audio system. Tweeter: The Tweeter combines the best qualities of metal and soft domes. A compact aluminum-magnesium dome is centered in a very wide textile surround. This very light and stiff dome is distortion free to frequencies far above the range of human hearing. The large surround adds additional output and plays deeper while dampening the metal membrane. Midrange: The midrange driver features an optimized hand coated paper membrane with a low-resonance fabric dust cap. In this design, as frequency rises, the outer cone area moves less and less. At its upper frequencies only the center moves, as in a bending wave driver delivering very. So, it has very quick and linear response to 10kHz although only a small part of this range is used. Particular attention was paid to eliminating distortion caused by playing at high volumes. These efforts are displayed in the Allegra's very expressive dynamics. Woofer: Metal is the optimal material for woofer cones and the Allegra's is made from ceramic-coated dur-aluminum, which is very light and stiff. The crossover eliminates all cone resonances so there is no interference with the midrange frequencies. Two smaller diameter woofers create higher output with lower distortion. On a subjective level, the bass is highly delineated, with exceptional movement and penetrating power. The cabinet volume is large enough to produce frequencies below 30Hz. Cabinet: With its low price and easy machine-ability MDF (medium density fiberboard) has established itself as the primary material for speaker enclosures. For performance however, it is far from optimal. Because it is heavy and flexible internal sound pressure turns the entire cabinet into a high distortion speaker. For the Allegra we use 13-layer plywood costing five times more than MDF because it is very light, stiff and well damped. For additional performance, constrained layer damping further reduces internal sound from exiting the cabinet walls. As a result the housing is completely boom-free. Crossover The upper crossover, combined with an angled cabinet face, brings tweeter and midrange in phase throughout their entire frequency range. A second crossover optimizes the response between the woofer and midrange. All crossover components are selected for sound, which include resonance-optimized polypropylene capacitors, hand-trimmed coils and close tolerance induction-free power resistors. Technical data: Principle: Multi-cabinet 3-way Tweeter: 3/4in metal dome with fabric surround Midrange: 6in paper cone midrange Impedance: 4 Ohm Output: 91dB/1W/1m Frequency Response: 25Hz - 30kHz (-3 dB) 100Hz - 30kHz (+ - 2,5 dB) Power Rating: 340W Cross-over frequency 280Hz, 2.7kHz Dimensions: W: 9in. H: 40in. D: 13.5in Weight: 58 Lbs.