Quantum Center 73

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.

Piano white


Piano black


Test reports

  • Heimkino<br>01 / 2013

    01 / 2013

  • hdfever.fr <br>04/2013



25 mm tweeter

2 x 130 mm woofer-midrange


Airflex port with a large opening area to guarantee best bass coupling

Large resonance absorbers

Very sturdy and elegant design made from MDF boards with elaborate bracing

40 mm thick, two-layer baffle in a high-gloss varnish finish

Removable cover frame


2 way bass reflex, double bass


fmax tweeter with extended frequency range

Sturdy aluminium/ABS flange with optimised acoustic channels

Damped drilled pole core

Dual compound fabric cone

Woofer / midrange

Distortion-optimised double magnet systems, magnetically shielded

Ceramic/aluminium cones for highest quality playback

Ventilated high-performance voice coils guarantee highest operational reliability

Flow-optimised, non-magnetic die-cast aluminium baskets reduce air turbulence and resonances


Elaborate phase- and amplitude-optimised crossover equipped with high-quality and select components

High-quality internal wiring


Bi-Wiring, Bi-Amping Option

Large connection panel with sturdy and encapsulated terminals to guarantee reliable contact even with high-quality cables possessing large cross-sections

2 way bass reflex, double bass
25 mm 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
Cabinet surface
Piano Black/Black satin
Piano Black/Mocca veneer
Piano White/White satin