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Table of contents for the manual
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Page 1
UT O P IA BER YLLIUM LINE U ser manual F rançais page 11 BP 374 - 108, rue de l'Av enir - 42353 La T alaudière cedex - F rance - T el.: 00 33 4 77 43 57 00 - F ax: 00 33 4 77 37 65 87 - ww w .focal-fr.com JMlab ® , Utopi a ® , W ® , Focus T im e ® , OP C ® , , Foc us R in g ® , Power F lowe r ® and S tructur e " γ " ® are [...]
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Page 2
U ser pr ecautions U ser manual Utopia Be line Thank you for choosing the Utopia B e loudspeakers. W e are pleased to share with you our philosophy : “ the S pirit of Sound”. These high-performance speakers feature the latest technical developments from F ocal-JMlab in terms of speaker design, whether it is for high fidelity or home theater sys[...]
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• Beryllium tw eeter p. 4 • “ F ocus Ring ™ ” and “ P ower Flower ™ ” p. 5 • The “ W ® ” cone p . 6 • Focus Time p . 7 • The “ ϒ ” (gamma) front structure p . 8 • OPC crossov er p . 9 • T echnical specifications p. 10 "W" W oofer "W" Medium "P ower Flo wer" magnet Beryllium Tweeter &[...]
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Page 4
The main advantage of the inv er ted dome tweeter or the “ full ” range tweeter ... The experience acquired ov er the last twenty years has allowed F ocal-JMlab to push back the limits of reversed dome technology and the work on the suspension, driver shape, adhesiv es and materials have at each stage produced an impro vement in linearity and b[...]
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Page 5
“ F ocus Ring ™ ” - a patent for the magnetic circuit of the tweeter . An intense magnetic field is of the utmost importance for good tweeter performance and the TGU conceived for large U topia into 95 was a key point in the development of the U topia line. Selecting a magnet that combines high power with small dimensions narr ows the choice [...]
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Page 6
P roperties of a drive unit membrane Three parameters are of prime importance: mass, internal damping and stiffness. • Stiffness allo ws the cone to behave as a piston over a wide range of fr equencies, especially important at bass frequencies for lo w distortion. • Low mass delivers maximum acceleration on transients for the best repr oduction[...]
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The scale of the audio spectrum to be reproduced imposes unavoidable physical constraints. T o appreciate this, you only need to consider the wavelengths to be produced. The wavelength is expressed by: λ = v/f v is the speed of sound in air (340m/s) f is the frequency of the signal to be r eproduced Therefore at 100Hz the wavelength λ = 3.4m At 1[...]
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Page 8
The motor systems of the drive units are mechanically coupled to the internal braces. The optimized profile offers perfect guidance for the cone, whi ch functions as a true piston. This is not affected by turbulence from the back wave. 1 2 A loudspeaker is a transducer . Its role involv es causing molecules of air to vibrate under the influence of [...]
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Page 9
The role of the Crosso ver The crossover has the function of distributing the signal fr om the amplifier to the various drive units in a loudspeaker: bass, midrange and treble. The most critical area of filtering this signal, with out any doubt, is between the midrange and treble. A low-pass filte r rolls off the higher fr equencies of the midrange[...]
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T echnical specifications U ser manual Utopia Be line 10 GRANDE UT OPIA Be NO V A UT OPIA Be AL T O UT OPIA Be Description 4-way bass refl ex fl oor standing 3-way bass refl ex fl oor standing 3-way bass refl ex fl oor standing • Speakers • 15" “ W ” cone, multiferrite subwoofer • 11" “ W ” cone, multiferrite woofer ?[...]
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Car act é ristiques techniques Manuel d'utilisation ligne Utopia Be 11 GRANDE UT OPIA Be NO V A UT OPIA Be AL T O UT OPIA Be Description Syst è me colonne bass-re fl ex, 4 voies Syst è me colonne bass-re fl ex, 3 voies Syst è me colonne bass-re fl ex, 3 voies • Haut-parleurs • Grave c ô ne “ W ” 38 cm, multiferrites • Bas m ?[...]
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N ous vous remer cions d ’ avoir choisi les enceintes de la ligne Utopia Be et de partager avec nous notr e philosophie « the S pirit of Sound » . Ces enceintes de haute technicit é int è gr ent les ultimes per fectionnements Focal-JMlab en mati è re de conception de haut-parleurs pour la haute fid é lit é et le home cin é ma. Afin d ’ [...]
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Ligne Utopia B é ryllium Manuel d'utilisation ligne Utopia Be 13 • T weeter B é ryllium p. 14 • “ F ocus Ring ™ ” et “ P ower Flower ™ ” p. 15 • C ô ne “ W ® ” p. 16 • Focus Time p . 1 7 • F ace avant structure “ ϒ ” p. 18 • Filtr e OPC p. 19 • Caract é ristiques techniques p. 11 W oofer "W" M [...]
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Page 14
14 T w eeter B é ryllium ™ Manuel d'utilisation ligne Utopia Be L ’ avantage d é cisif du d ô me invers é ou le tw eeter “ large bande ” ... L ’ exp é rience acquise au cours des vingt derni è res ann é es sur la technologie des tweeters à d ô me invers é nous a permis d ’ en repousser les limites. T ravail sur la suspens[...]
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15 F ocus Ring ™ et P o w er Flo w er ™ Manuel d'utilisation ligne Utopia Be “ F ocus Ring ™ ” un brevet pour le cir cuit magn é tique du tweeter . L ’ impor tance d ’ un champ magn é tique intense est fondamental pour un tweeter : le TGU con ç u pour la Grande U topia en 95 a é t é un point clef du d é veloppement de la li[...]
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P ropri é t é s de la membrane d ’ un haut-parleur Elle doit concilier trois param è tr es contradictoires : le poids, l ’ amortissement et la rigidit é . • La rigidit é permet un fonctionnement en piston parfait sur une large bande de fr é quences, et donc une é limination de la distorsion dans le grave (pas de fractionnemen t) . • [...]
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Page 17
L' é tendue du spectre sonore à restituer impose des contraintes physiques incontournables. P our s'en convaincre, il suffit de consid é rer les longueurs d'ondes à reproduir e. La longueur d'onde s'exprime par : λ = v/f v est la vitesse du son dans l'air soit 340 m/s f est la fr é quence du signal à reproduire [...]
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Page 18
Les circuits magn é tiques sont coupl é s m é caniquement avec les tasseaux internes. Le profil optimis é de la face avant offre un guidage parfait du c ô ne, il fonctionne en piston id é al. Il n ’ est pas affect é par les turbulences de l ’ onde arri è re. 1 2 U n haut-parleur est un transducteur . Son r ô le consiste à mettre en vi[...]
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Le r ô le du filtre Le filtre a pour fonction de r é partir le signal en provenance de l'amplificateur entr e les dif f é rentes voies constituant l'enceinte acoustique : grave, m é dium et aigu. La coupure la plus critique est sans aucun doute celle qui concerne le raccordement du m é dium et de l ’ aigu. U n filtre passe-bas coup[...]
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