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Quantum 727

3-way bass-reflex loudspeaker with dual bass system

  • The flagship of the Quantum 720 range: Four loudspeaker chassis, meticulously tuned and coordinated for perfect sound reproduction
  • Generously dimensioned enclosure volume for a solid deep bass foundation and the highest quality components for precise, high-resolution reproduction
  • 30 mm fabric dome with special damping and ferrofluid cooling, wide surround and Harmonic Radiation Horn (HRH) made of aluminium
  • Three Klippel-optimized 170 mm chassis with ceramic-aluminium cone: 1 x woofer and 2 x subwoofers for maximum resilience and precision
  • Sturdy, rounded MDF enclosure with low-resonance 25 mm baffle in a silk-matt design and traverse system with height-adjustable spikes

3-way bass-reflex loudspeaker with dual bass system

As the top model of the Quantum 720 range, the Quantum 727 is equipped with a total of four loudspeaker chassis. Two of the three 170 mm FE Dynamics woofers are responsible solely for the basses and, combined with the generously dimensioned enclosure volume, deliver a voluminous bass foundation, with the third one contributing precise voice reproduction. The drivers are Klippel-optimised and fitted with a ceramic-aluminium membrane. The treble range delivers fine resolution through a 30 mm HRH tweeter with fabric membrane, special damping and ferrofluid cooling. The components are accommodated in an elaborately braced MDF enclosure that is rounded at the sides and rear and has a particularly low-resonance design. The fabric cover on the silk-matt lacquered baffle is secured magnetically.

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High-quality chassis components

The FE Dynamics subwoofers and woofers with a size of 130mm and 170mm respectively are made of a ceramic-aluminium membrane. These harmonize perfectly with the 30 mm fabric tweeters of the range and deliver a very dynamic and transparent, spatial soundscape.

Strong and stable

An elaborately braced MDF enclosure and sturdy traverses with adjustable conical spikes form the foundation for a loudspeaker with outstanding sound qualities.

Acoustic giant

A total of four loudspeaker chassis are located in the enclosure, which is rounded at the sides and to the rear. The elaborate design with the 25 mm baffle and the traverses reliably prevents undesirable resonances.

Technical specifications

  • 3 way bass reflex
  • 2 x 6.5“ woofer
  • 6.5“ midrange
  • 30 mm tweeter
Power Handling (RMS/Max.)
  • 200 / 350 Watts
Sensitivity (2.8V/1m)
  • 93 dB
  • 4 – 8 Ohms
Frequency Response
  • 22 - 52.000 Hz
Crossover Frequencies
  • 280 Hz / 3200 Hz
Recommended Amplifier Output
  • > 30 watts
Dimensions (WxHxD)
  • 200 x 1055 x 310 mm
  • 290 x 1030 x 310 mm (incl. base)
  • 18.7 kg


Highly modern design with silk matt lacquer and aluminium applications
  • Floorstanding speaker
  • Solid metal basket with generous ventilation openings
  • Solid aluminum cover rings
  • Ceramic-aluminium cone
  • FE-Dynamics woofer-midrange
  • Ventilated voice-coil unit for maximum capacity
  • Klippel® optimised construction
  • HRH tweeter with 30 mm cloth dome, special damping and ferrofluid-cooling, big surround and aluminium Harmonic Radiation Horn
  • Amplitude and phase-optimised crossover with acoustical 24dB filters and high-quality components
  • Big Bi-Wiring/Bi-Amping connecting terminal with big screw connectors and gold-plated contacts
  • Exchangeable metal/rubber spike tips for an optimum adaptation to the floor type
  • Solid cross beams made of painted MDF with height-adjustable massive metal cone spikes
  • Detachable cloth grille with optimized acoustic transmissivity and hidden magnetic fixing
  • Airflex port with rounded reflex opening to minimize annoying resonances
  • Baffle in semi-gloss lacquering
  • Solid and substantially braced MDF cabinet with rounded side panels and 25 mm low-resonance baffle
Cabinet surface
  • Black Satin/Ash Decor Black
  • Black Satin/Mocca Decor