Quantum Signature

High-end floorstanding speaker as 3-way bass reflex system

The Quantum Signature is impressive at first sight due to its sheer size. The speaker accommodates a total of six high-tech individual chassis in a high gloss MDF cabinet, which weighs in at 73 kg. The overall appearance of this exceptional transducer is predominantly shaped by three sumptuous 200 mm woofer chassis. The two 170 mm midrange drivers offer ideal properties in the critical vocal range. The new dome tweeter in the Signature speaker is positioned centrally in a D´Appolito configuration.

Piano black



Test reports

  • Audio Test<br>08/2014

    Audio Test

  • Hifi Test <br>05 / 2013

    Hifi Test
    05 / 2013

  • i-fidelity.net<br> 02 /2014

    02 /2014

  • Stereoplay
06 / 2013

    Stereoplay 06 / 2013

  • av-magazin.de<br>06 / 2013

    06 / 2013

  • What HiFi <br>09 / 2013

    What HiFi
    09 / 2013


2 x 170 mm midrange

3 x 200 mm woofer

30 mm tweeter


Removable protective fabric grille with optimum sound transmissivity and concealed magnet fastenings

Height-adjustable metal spikes included

High-quality internal Oehlbach® wiring

Klippel®-optimised overall design


Airflex ports with extremely large opening areas to guarantee best-possible bass coupling

Double-walled side panels with varying material thickness to reduce case resonances

Generous bracing inside the case with chassis support

Sturdy and low-resonance MDF case

Sturdy, MDF case with rounded sides and elaborate struts and decorative high-gloss front


3 way bass reflex, triple bass


Copper cap-optimised drive system for minimum distortion

f-max Signature tweeter with a particularly wide surround for optimised dispersion characteristics at frequencies above 20 kHz

Generous magnet ventilation with low natural resonance

Particularly lightweight cone construction consisting of semicrystalline polymer (PTFE) for maximum efficiency

Sturdy aluminium flange with optimised acoustic channels

Woofer / midrange

„Controlled Flexing Cone“: Cone geometry for controlled dispersion of bending waves in the midrange, and with it the capability to reproduce a greater bandwidth

Distortion-optimised magnet system with double induction rings and stray field optimisation

High cone rigidity ensured by inverse ceramic/aluminium dust caps for the woofer and midrange

Kapton voice coil to minimise eddy current loss, thereby ensuring minimal distortion of the midrange

Sophisticated voice coil ventilation for a particularly high degree of resilience

Generously vented die-cast basket for preventing turbulence and compression effects


24 dB LKR topology with transformer core coils and audiophile PP capacitors

Crossover mechanically isolated from the case

Crossover on two separate circuit-boards to optimise use with bi-wiring


Large bi-wiring terminal area with solid screw connections and high-quality cable bridges

Matt gold-plated loudspeaker terminals sealed with acrylic

3 way bass reflex, triple bass
30 mm tweeter
2 x 170 mm midrange
3 x 200 mm woofer
Power Handling (RMS / Max.)
400 / 700 watts
Sensitivity (2.8V/1m)
94 dB
4 – 8 Ohms
Frequency Response
16 – 75000 Hz
Crossover Frequencies
200 Hz / 2900 Hz
Recommended Amplifier Output
> 35 Watts
Dimensions (WxHxD)
313 x 1410 x 465 mm
73 kg
Cabinet surface
Piano Black