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Supravox

285 GMF Bass-midrange speaker 70W / 100dB / 8 Ohms

285 GMF Bass-midrange speaker 70W / 100dB / 8 Ohms

€329,00 EUR
€329,00 EUR
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CLASSIC Series
The objective of the Classic series is to maintain the philosophy of Supravox which is to develop high-efficiency full-range loudspeakers. We are working to further expand the useful bandwidth for the highest possible performance, while constantly improving the definition, quality and linearity of response. From diameter 135 to 380 mm, the audiophile can satisfy his passion.

 

This broadband and high-performance loudspeaker offers the listener a tight and pleasant bass. It goes ideally with a low power amplifier (tube or transistor) of about 10W, it also supports higher power for use in subwoofers.

In an open-baffle and 2 way configuration, it can reinforce, with the same degree of reproduction precision, the bass of a 215 RTF, and ensures comfortable and balanced listening.

In a TQWT enclosure it will bring out all the finesse of your favorite records.

In an RJ or Bass-reflex enclosure, it will produce one of the finest well-defined bass.

This driver can be coupled with a 1 inch driver  mounted on a horn with a cut-off frequency up to 1200 Hz if needed and will offer an extremely vivid and powerfull reproduction of the highbass/low medium frequencies.

 

 

Frequency response from 200Hz to 20 kHz on axis

 

Frequency response from 200Hz to 20kHz at 30°

 

Frequency response from 200Hz to 20kHz at 60°

 

1/3 octave frequency response

 

impulse response

 

Waterfall

 

Impedance
TECHNICAL CHARACTERISTICS
Below are the 2019 parameters, measured using AES2-1984-r2003.
Sensitivity (2.83V/1m): 100 dB
Sensitivity (1W/1m): 99 dB
Bandwidth : 40Hz-7KHz
Impedance: 8 Oh
power max. RMS : 70 W.
Suspension : 3 ply paper
Linear excursion: +/-3,4 mm
Ferrite diameter: 120mm
Magnetic field : 1,1 T
HP diameter: 290/310mm
Basket: Aluminum
Mounting hole distance: 294mm
Enclosure drilling diameter: 275mm
HP depth: 128mm
Fs : 47,8 Hz
Re : 6.5 Ohms
And 1 kHz : 1,02 mH
Qts : 0,33
Qe: 0,345
Qm : 8,86
Vas: 157 L
Bl : 10,55
Mms : 19,7 g
Sd : 442,6 cm²
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High-Precision Craftsmanship: Made in France

Each Supravox loudspeaker inherits expertise born in the 1950s. From the iconic 215 RTF 64 to today's innovations, our loudspeakers are entirely hand-assembled in our workshop just outside Paris. A French standard of perfection that defies time to deliver pure musical emotion.

  • The Artisan's Touch

    At the heart of our factory on the outskirts of Paris, each voice coil is hand-wound with micrometric tension. We use ultra-light supports and high-purity conductors to minimize moving mass. It is this extreme lightness that gives our loudspeakers their legendary responsiveness and their ability to reveal the finest details.

  • The Hand and the Spirit

    Each loudspeaker is a unique piece, assembled by craftsmen whose expertise has been passed down for decades. The precision of the centering and the tension of the suspensions are adjusted by touch, a sensitivity that no machine can replicate. This artisanal assembly guarantees perfect fluidity of movement and exceptional longevity.

  • Exponential Paper Cones

    Our cones are made from a proprietary recipe of long-fiber paper, manually processed to achieve an ideal balance of rigidity and damping. The exponential profile, pioneered by Supravox, ensures homogeneous sound diffusion. The result is an organic timbre and strikingly realistic vocal presence.

  • Magnetic Alchemy

    Beyond the simple magnet, we master energy. In our factory on the outskirts of Paris, we forge Alnico 5 motors and Field Coil systems capable of saturating the air gap with absolute precision. This controlled power offers lightning-fast dynamics and almost zero distortion, hallmarks of Supravox's high sensitivity.

  • Signal Purity

    Perfection often comes from subtraction. By designing full-range loudspeakers capable of covering most of the spectrum, we eliminate the need for crossover filters. The signal travels directly from your amplifier to the cone, preserving perfect phase coherence and a holographic soundstage of complete transparency.

  • Tested for Eternity

    Each unit leaving our workshops undergoes a rigorous testing protocol: frequency analysis, impedance measurement, and tactile inspection of the excursion. But the final verdict belongs to the human ear. Each loudspeaker is validated by our technicians, ensuring that your investment will remain an exceptional instrument for decades to come.

Heritage Collection