Focal Sopra No3 3-Way Floorstanding Speaker (Pair)

Since the beginning, we have always had a great interest in the magnetic circuit, an essential aspect of a speaker drive unit. The precision and detail of audio reproduction depends on the stability of the magnetic field. 

After having pushed back the limits in electromagnetic technology with the Grande Utopia EM and the Stella Utopia EM, our engineer discovered that the magnetic field varies regardless of its intensity. Indeed, it is not stable because it is modulated by three factors: the movement of the voice coil (Lenz's law), the current passing through it (Foucault current) and the frequency. Consequently, the voice coil, the moving part, is in the magnetic field which becomes too variable, and this leads to loss of precision.

The NIC technology lies in a Faraday ring whose dimensions, materials and positioning we were able to optimize to make the magnetic field be no longer affected by the position of the voice coil, by the amperage or the frequency of the current passing through it. This solution permits to control the magnetic field to decrease the effects of distortion and give the sound a very high-definition and an unprecedented dynamic.

Specification:

Type

Three-way bass-reflex floor standing loudspeaker

Speakers

2 x 81/4" (21cm) W cone woofers with NIC61/2" (16.5cm) W cone midrange with NIC and TMD suspension11/16" (27mm) pure Beryllium IHL inverted dome tweeter

Frequency response

(+/- 3dB)33Hz - 40kHz

Low frequency point

-6dB26Hz

Sensitivity

(2.83V/1m)91.5dB

Nominal impedance

8 Ohms

Minimum impedance

3.1 Ohms

Crossover frequency

250Hz / 2200Hz

Recommended amplifier

power40 - 400W

Dimensions

(HxWxD)4949/64x1553/64x2327/64" (1264x402x595mm)

Weight

(unit)154.32lbs (70kg)

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