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Quantum 725

2.5-way bass-reflex loudspeaker

  • Quantum Stereo floor-standing loudspeaker in a stylish design and with the highest quality components for stylish, audiophile music enjoyment
  • Dynamics, precision, power: Magnat Quantum stands for high-end sound, and this loudspeaker more than lives up to its reputation
  • 30 mm fabric dome with special damping and ferrofluid cooling, wide surround and Harmonic Radiation Horn (HRH) made of aluminium
  • Two Klippel-optimized 170 mm chassis with ceramic-aluminium cone: 1 x woofer and 1 x subwoofer 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

2.5-way bass-reflex loudspeaker

With an enclosure rounded at the sides and rear, silk-matt lacquered baffle, magnetically secured fabric cover – the Quantum 725 2.5-way bass-reflex loudspeaker boasts a very elegant visual appearance. And outstanding acoustic qualities: While a 30 mm HRH fabric tweeter with special damping and ferrofluid cooling provides for excellent transparency and resolution in the upper frequency ranges, two 170 mm diameter FE Dynamics drivers together take care of the bass ranges, with only the upper chassis responsible for the mid-tone range. Thanks to the ventilated voice coil and generous vents in the sturdy metal basket, the Klippel-optimised drivers with ceramic-aluminium membranes ensure high load capacity values.

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.

Technical specifications

Frequency Response
  • 22 - 52.000 Hz
  • 2 ½ way bass reflex
  • 170 mm woofer-midrange
  • 30 mm tweeter
  • 1 x 170 mm woofer
Power Handling (RMS/Max.)
  • 180 / 320 watts
  • 4 – 8 Ohms
Crossover Frequencies
  • 260 Hz, 3.200 Hz
Recommended Amplifier Output
  • > 30 watts
Sensitivity (2.8V/1m)
  • 92 dB
  • 16.5 kg
Dimensions (WxHxD)
  • 200 x 975 x 310 mm
  • 290 x 1030 x 310 mm (incl. base)


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
  • Ventilated voice-coil unit for maximum capacity
  • Klippel® optimised construction
  • FE-Dynamics woofer-midrange
  • 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
  • Solid cross beams made of painted MDF with height-adjustable massive metal cone spikes
  • Exchangeable metal/rubber spike tips for an optimum adaptation to the floor type
  • Baffle in semi-gloss lacquering
  • Airflex port with rounded reflex opening to minimize annoying resonances
  • Solid and substantially braced MDF cabinet with rounded side panels and 25 mm low-resonance baffle
  • Detachable cloth grille with optimized acoustic transmissivity and hidden magnetic fixing
Cabinet surface
  • Black Satin/Mocca Decor
  • Black Satin/Ash Decor Black