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Yamaha YST-FSW150 Manual

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6 Fr
Advanced Yamaha Active Servo Technology II
En 1998, Yamaha a mis au point des systèmes
acoustiques utilisant la technologie YST (Yamaha
Active Servo Technology) qui permet de
reproduire des graves puissants et de grande
qualité. Utilisant une liaison directe entre
l’amplificateur et l’enceinte, cette technologie
garantit une transmission fidèle du signal et une
commande précise des enceintes.
Les haut-parleurs étant pilotés par les circuits de
commande par impédance négative de
l’amplificateur et par la résonance générée entre le
volume de l’enceinte et le port, l’énergie résonante
produite (concept “boumeur à air”) est supérieure à
celle des enceintes bass-reflex standard. Ceci
permet à des enceintes de taille bien plus petite de
restituer des basses fréquences.
La technologie Advanced YST II mise au point
récemment par Yamaha apporte de nombreuses
améliorations à la Yamaha Active Servo
Technology et permet, entre autre, de mieux
contrôler les forces stimulant l’amplificateur et les
enceintes. Du point de vue de l’amplificateur,
l’impédance des enceintes change selon la
fréquence du son. Yamaha a donc mis au point un
nouveau circuit combinant des commandes à
impédance négative et à courant constant, afin de
garantir des performances plus stables et une
reproduction des graves parfaitement claire.
Son grave de
haute amplitude
Enceinte
Event
Woofer d’air
(résonateur de Helmholtz)
Convertisseur
d’impédance avancé
Amplificateur Active
Servo Processing
Signaux de basse
amplitude
Signaux
… 18 …


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