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Quantum Center 73

Centre loudspeaker, 2-way bass reflex, double bass

  • Home cinema add-on: Center speaker for the Quantum 750 range
  • Perfect home cinema extension for the stereo system
  • 25 mm fmax fabric tweeter with extended frequency range
  • Two 130 mm ceramic-aluminium cone woofers for the best dynamics and voice reproduction
  • Extremely low-resonance 40 mm enclosure front panel on a reinforced body

Centre loudspeaker, 2-way bass reflex, double bass

The Quantum Center 73 is the centre loudspeaker that goes with the Quantum 750 series. Besides the extremely low-resonance 40 mm case front on a stiffened corpus, it offers a clear and modern language of shape that is available in perfect high-gloss or silk-matt varnish finishes. The latest-generation computer-optimised loudspeaker chassis deliver an uncompromisingly clean and dynamic sound.

The Quantum Center 73 is available in a black, white and black-mocha finish. Two bass/mid-range loudspeakers with a diameter of 130 mm in conjunction with a ceramic-aluminium cone in a high-strength die-cast basket are responsible for highest sound precision and clean transitions to the powerful "F-Max" fabric dome with dual-compound cone. The double configuration in the bass and mid-range produces excellent dynamism for home-cinema applications.

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Technical specifications

  • 2 way bass reflex, double bass
  • 1" tweeter
  • 2 x 130 mm woofer-midrange
Power Handling (RMS/Max.)
  • 120 / 180 watts
Sensitivity (2.8V/1m)
  • 91 dB
  • 4 – 8 Ohms
Frequency Response
  • 30 – 50000 Hz
Crossover Frequencies
  • 2800 Hz
Recommended Amplifier Output
  • > 20 Watts
Dimensions (WxHxD)
  • 470 x 170 x 295 mm
  • 9.4 kg


Highly modern design with silk matt lacquer and aluminium applications
  • Centre speaker
Woofer / midrange
  • Ventilated high-performance voice-coils ensure a high degree of operational reliability
  • Airflow-optimized, non-magnetic aluminium die-cast baskets to prevent turbulence and resonance effects
  • Ceramic/aluminium cones for best reproduction quality
  • Double magnetic circuits with optimized stray field, magnetically shielded
  • Solid aluminium/ABS flange with optimized acoustic transmission
  • Damped pole piece hole
  • Dual compound fabric cone
  • fmax tweeter with increased frequency range
  • Elaborated phase and amplitude optimized crossover with selected high-quality components
  • High-quality interior cabling
  • Bi-Wiring, Bi-Amping Option
  • Large terminal panel with solid and encapsulated connectors to accommodate the use of high-quality heavy gauge cables
  • Airflex ports with extremely wide openings for optimized bass connection
  • Very solid and elegant construction using MDF panels and elaborated struttings
  • 45 mm double-layer baffle in high gloss painting finish
  • Detachable grill
  • Big rubber resonance absorbers
Cabinet surface
  • Piano White/White satin
  • Piano Black/Black satin