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Quantum Edelstein

Shelf loudspeaker, 2 way bass reflex

  • Outstandingly simple design with a skillful combination of acrylic glass, aluminium and magnificently finished lacquer surface
  • High-end in the smallest of spaces: Perfect reproduction over the entire frequency range with the Quantum Edelstein
  • 25 mm silk dome tweeter with an extra-wide surround and high-performance neodymium magnet system for maximum dynamics and resolution
  • Klippel-optimized 110 mm chassis with ceramic-aluminium cone sandwich membrane and especially powerful magnet system
  • Sturdy MDF enclosure with high-gloss lacquer finish and solid aluminium front panel

Shelf loudspeaker, 2 way bass reflex

A compact housing in combination with above-average acoustic performance. Technological excellence and innovative design come together in this exceptional compact loudspeaker to create an acoustic masterpiece – a real gem!
The front of the high-gloss varnished MDF body is adorned by a solid aluminium front panel with milled and burnished sound guide for the low-midrange loudspeaker and tweeter. The double base plate is also made of solid aluminium and has been combined with polished acrylic glass. Only high-quality components have been used for this two-way bass reflex system whereby the emphasis was placed on selected drivers (110 mm low-midrange loudspeaker, 25 mm dome tweeter and the also very high-quality cabling with particularly large cross-sections.)

Test reviews

What do trade magazines say about this product?

Reduced design – acoustically to the point

You won´t find any extravagance, decorative elements or embellishments here! Instead, the Edelstein is convincing with simple elegance, high-quality craftsmanship and a touch of noblesse.

Stylish aluminium front for optimum acoustics

The targeted mechanical coupling of the silk dome tweeter to the solid aluminium front panel ensures optimum dispersion characteristics with low inherent vibrations.

Perfect looks even from behind

The milled aluminium connecting terminal with gold-plated, totally insulated screw terminals also allows the use of larger-gauge cables.

Perfect acoustic decoupling

The silk dome of the tweeter is perfectly balanced acoustically. The especially wide surround offers optimum dispersion characteristics in combination with the special sound guide in the aluminium front panel.

Technical specifications

  • High-End-Bookshelf Speaker
  • 2 way bass reflex
  • 110 mm woofer-midrange
  • 1" tweeter
Power Handling (RMS/Max.)
  • 75 / 150 watts
Sensitivity (2.8V/1m)
  • 90 dB
  • 4 – 8 Ohms
Frequency Response
  • 34 – 50000 Hz
Crossover Frequencies
  • 2500 Hz
Recommended Amplifier Output
  • > 30 watts
Dimensions (WxHxD)
  • 135 x 232 x 246 mm
  • 5 kg


Highly modern design with silk matt lacquer and aluminium applications
  • Shelf speaker
  • Airflow-optimized, non-magnetic aluminium die-cast basket to prevent turbulence and compression effects to handle large cone excursions
  • Distortion-optimised, powerful magnet system with induction ring and stray field optimisation, thereby ensuring minimal distortion and high efficiency
  • Kapton voice coil to minimise eddy current loss, thereby ensuring minimal distortion of the midrange and optimised efficiency
  • Aluminium/ceramic sandwich cone with an inverted dust cap for optimum rigidity with high internal damping
  • Silk dome tweeter with a particularly wide surround for optimised dispersion characteristics at frequencies above 20 kHz
  • Special sound guide in the aluminium front panel for optimum dispersion properties
  • Mechanical coupling to the aluminium front panel for reduced intrinsic vibration
  • High performance neodymium magnet system for excellent dynamics and a high resolution
  • High-quality interior cabling
  • Elaborated phase and amplitude optimized crossover with selected high-quality components
  • Particularly low-impedance bass-midrange channel for minimal electrical loss
  • Milled aluminium terminal with gold-plated screw connectors encapsulated in acrylic
  • Sturdy MDF cabinet with high-quality glossy finish
  • Solid aluminium front panel with machined and burnished sound guide for the bass-midrange driver and tweeter
  • Double base plate manufactured from polished acrylic glass and solid aluminium, decoupled from one another
  • Reinforcing board in the housing with chassis support for the bass-midrange, which ensures optimum low-resonance properties and minimal intrinsic vibration
Cabinet surface
  • Cabinet in high-gloss black finish/front panel and base plate in brushed and anodised aluminium, base plate in polished acrylic glass
  • Cabinet in high-gloss white finish/front panel and base plate in brushed and anodised aluminium, base plate in polished acrylic glass


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