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YST-SW40
Active Servo Processing Subwoofer System
Enceinte pour très basses fréquences de traitement à asservissement actif
Active Servo
Thank you for selecting this YAMAHA Subwoofer System.
Technology
Nous vous remercions d’avoir porté votre choix sur cette enceinte
pour très basses fréquences YAMAHA.
OWNER’S MANUAL
MODE D’EMPLOI
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SAFETY INSTRUCTIONS 7 Wall or Ceiling Mounting – The unit should be mounted to a wall or ceiling only as recommended by the CAUTION manufacturer. RISK OF ELECTRIC SHOCK DO NOT OPEN 8 Ventilation – The unit should be situated so that its location or position does not interfere with its proper ventilation. CAUTION: TO REDUCE THE RISK OF For example, the unit should not be situated on a bed, ELECTRIC SHOCK, DO NOT REMOVE sofa, rug, or similar surface, that may block the ventilation COVER (OR BACK)
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English FCC INFORMATION (for US customers only) 1. IMPORTANT NOTICE : DO NOT MODIFY THIS UNIT! Compliance with FCC regulations does not guarantee that interference will not occur in all installations. If this product This product, when installed as indicated in the is found to be the source of interference, which can be instructions contained in this manual, meets FCC determined by turning the unit “OFF” and “ON”, please try requirements. Modifications not expressly approved by to eliminate th
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CONTENTS Caution ...........................................................................4 Adjusting volume ..........................................................10 Features .........................................................................5 Active Servo Technology ..............................................11 Placement ......................................................................5 Troubleshooting ............................................................12 Connection
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English FEATURES This subwoofer system employs YAMAHA Active Servo This unit can be added easily to your existing audio system • • Technology which YAMAHA developed for reproducing by connecting to either the speaker terminals or the line higher quality super-bass sound. (Refer to page 11 for output (pin jack) terminals of the amplifier. details on Active Servo Technology.) For the effective use of this unit, this unit’s super-bass • This unit does not only enhance bass frequency response sou
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English If your amplifier has two sets of speaker terminals Right speaker Left speaker This unit OUTPUT INPUT2 AUTO POWER TO SPEAKERS OUTPUT INPUT2 POWER AUTO TO SPEAKERS ON OFF FROM AMPLIFIER INPUT1 ON OFF FROM AMPLIFIER INPUT1 To AC outlet Amplifier AB (Both “A” and “B” outputs must be ON.) Connecting to this unit’s OUTPUT/INPUT terminals For connections, cut the speaker wires as short as possible. If * Banana Plug connections are also possible (except for U.K. the connections are faulty, no
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English CONTROLS AND THEIR FUNCTIONS Front panel POWER HIGH CUT VOLUME 40 Hz 140 Hz010 POWER HIGH CUT VOLUME 50 Hz 150 Hz 010 123 4 Rear panel OUTPUT INPUT2 AUTO OUTPUT INPUT2 AUTO POWER TO SPEAKERS POWER TO SPEAKERS ON OFF FROM AMPLIFIER INPUT1 ON OFF FROM AMPLIFIER INPUT1 5 1 POWER indicator 5 AUTO POWER ON/OFF switch Lights up when the POWER switch is turned ON, and By setting this switch to the ON position, this unit’s goes off when turned OFF. automatic power ON/OFF function operates as des
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ADJUSTING VOLUME FREQUENCY CHARACTERISTICS POWER HIGH CUT VOLUME Adjustment of the VOLUME control and the HIGH CUT control should be changed according to the main speakers, listening condition, source, etc. Following figures show the optimum adjustment of each control 50 Hz 150 Hz 010 and the frequency characteristics when this unit is combined with a typical speaker system. 2 5 1, 4 This unit’s frequency characteristics 1 Set the VOLUME control to minimum. dB HIGH CUT 100 Hz 2 Turn
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English ACTIVE SERVO TECHNOLOGY The theory of Active Servo Technology is based upon two Thus it is this problem that is resolved through the major factors, the Helmholtz resonator and negative- employment of a design in which the amplifier functions to impedance drive. Active Servo Processing speakers supply special signals. If the electrical resistance of the voice reproduce the bass frequencies through an “air woofer”, coil could be reduced to zero, the movement of the speaker which is a por
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TROUBLESHOOTING If the unit fails to operate normally, check the following points to determine whether the fault can be corrected by the simple measures suggested. If it cannot be corrected, or if the fault is not listed in the SYMPTOM column, disconnect the power cord and contact your authorized YAMAHA dealer or service center for help. SYMPTOM CAUSE REMEDY Power is not supplied even though the The power plug is not securely connected. Connect it securely. POWER switch is ON. No sound . The VO
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TABLE DES MATIERES Attention ...................................................................... 14 Réglage du volume ..................................................... 20 Caractéristiques .......................................................... 15 Technologie de L’asservissement Actif ....................... 21 Positionnement ............................................................ 15 En cas de Difficulté ...................................................... 22 Connexions .........
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Français CARACTERISTIQUES • Cette enceinte pour très basses fréquences utilise la • Cet appareil peut être facilement ajouté à votre chaîne technologie de l’asservissement actif YAMAHA développée actuelle en la raccordant soit aux bornes d’enceintes, soit par YAMAHA pour reproduire un son ultra-basses de aux bornes de sortie de ligne (fiche jack) de l’amplificateur. meilleure qualité. (Pour ce qui concerne la technologie de Pour utiliser au mieux les possibilités de cet appareil, les • l’asservi
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Français Si l’amplificateur est doté de deux jeux de bornes d’enceintes Enceinte droite Cet appareil Enceinte gauche Right speaker Left speaker This unit OUTPUT INPUT2 AUTO POWER TO SPEAKERS OUTPUT INPUT2 POWER AUTO TO SPEAKERS ON OFF FROM AMPLIFIER INPUT1 ON OFF FROM AMPLIFIER INPUT1 Vers une prise CA To AC outlet Amplificateur Amplifier AB (Les deux sorties “A” et “B” (Both “A” and “B” outputs doivent être en circuit.) must be ON.) Raccordement aux bornes OUTPUT/INPUT de cet appareil Pour les
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RACCORDEMENT AUX BORNES DE SORTIE DE LIGNE (FICHE JACK) DE L’AMPLIFICATEUR • Laisser les enceintes principales raccordées à l’amplificateur. • Les bornes de sortie de ligne de l’amplificateur s’appellent généralement PRE OUT ou SUBWOOFER OUT. * Pour le raccordement à la borne PRE OUT, l’amplificateur doit être doté d’au moins deux jeux de bornes PRE OUT. Avec certains amplificateurs ne possédant qu’un seul jeu de bornes PRE OUT, il est possible qu’aucun son ne soit produit aux enceintes droite e
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Français LES COMMANDES ET LEURS FONCTIONS Panneau avant POWER HIGH CUT VOLUME 40 Hz 140 Hz010 POWER HIGH CUT VOLUME 50 Hz 150 Hz 010 23 4 1 Panneau arrière OUTPUT INPUT2 AUTO OUTPUT INPUT2 AUTO POWER TO SPEAKERS POWER TO SPEAKERS ON OFF FROM AMPLIFIER INPUT1 ON OFF FROM AMPLIFIER INPUT1 5 1 Voyant POWER 5 Commutateur AUTO POWER ON/OFF S’allume lorsque l’interrupteur POWER est en circuit, et En mettant ce commutateur sur la position ON, la fonction s’éteint lorsqu’il est hors circuit. de mise sou
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REGLAGE DU VOLUME CARACTERISTIQUES DE FREQUENCE POWER HIGH CUT VOLUME Le réglage de la commande VOLUME et de la commande HIGH CUT doit être modifié selon les enceintes principales utilisées, les conditions d’écoute, la source sonore, etc. Les figures ci-après montrent le réglage optimal de chacune 50 Hz 150 Hz 010 des commandes et les caractéristiques de fréquence, lorsque cet appareil est utilisé en combinaison avec une enceinte standard. 2 5 1, 4 Caractéristiques de fréquence de ce
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Français TECHNOLOGIE DE L’ASSERVISSEMENT ACTIF La théorie de la technologie de l’asservissement actif Ce problème est résolu électroniquement grâce à un repose sur deux principes: cavité résonnante de Helmotz et amplificateur spécial qui fournit le signal satisfaisant à toutes circuit d’attaque d’amplificateur à impédance négative. Une les conditions. Si la résistance électrique de la bobine du haut- enceinte à asservissement actif reproduit les basses parleur pouvait être réduite à zéro, le côn
