Yorkville nx 720 s owners manual
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Page 1
The e xclamation point within an equilatereal triangle is intended to ale r t the user to the presence of impor tant operating and maintenance (ser vicing) instr uctions in the literature accompan ying the applianc e. Le point de xclamation à lintér ieur dun tr iangle équilatéral est prévu pour aler ter lutilisateur de la présence dinstr uctions impor tantes dans la littérature accompag - nant lappareil en ce qui concer ne lopération et la maintenance de cet appareil . This lightning flash with arro whead symbol, within an equilateral tr iangl e, is intended to aler t the user to the presence of uninsulated dangerous v oltage within the product s enclosure that ma y be of sufficient magnitude to constitute a r isk of electr ic sho ck to person s. Ce symbole déclair avec tête de flèche dans un tr iangle équilatéral est prévu pour aler ter lutilisateur de la présence dun « v oltage dangereux » non-isolé à pro ximité de lenceinte du produit qui pourrait être dampleur suffisante pour présente\ r un r isque de choque électr ique. IMPOR TANT SAFETY INSTR UCTIONS safety-4v5.eps - Apr il 3/2007 CA UTION : TO REDUCE THE RISK OF ELECTRIC SHOCK, DO NO T REMO VE CO VER (OR BA CK). NO USER SER VICEABLE PARTS INSIDE. REFER SER VICING TO QU ALIFIED SER VICE PERSONNEL . FOLL OW ALL INSTR UCTIONS SUIVEZ TOUTES LES INSTR UCTIONS Instructions per taining to a risk of fire, electric sho ck , or injury to a per son Read Instructions: The Owner s Manual should be read and understood bef ore operation of y our unit. Please , sa ve these instr uc- tions f or future ref erence and heed all wa rnings . Clean only with dr y cloth . Pa ck aging: Keep the bo x and pac kaging mater ials , in case the unit needs to be retur ned f or ser vice . Warning: To reduce the r isk or fire or electr ic shoc k, do not e xpose this apparatus to rain or moistur e. Do not use this apparatus near w ater! Warning : When using electr ic product s, basic precautions should alw ays be f ollo wed, including the f ollo wing: Po wer Sour ces Your unit should be connected to a po wer source only of the v oltage specified in the owners manual or as ma rked on the unit . This unit has a pola rized plug . Do not use with an e xtension cord or receptacle unless the plug can be fully inser ted. Precau- tions should be tak en so that the grounding scheme on the unit is not def eated. Haza rds Do not place this product on an unstab le car t, stand, tr ipod, bra cket or ta ble. The product ma y fall, causing ser ious personal inju ry and ser ious damage to the product . Use only with car t, stand, tr ipod, brac ket, or tab le recommended by the manuf acturer or sold with the product . Follow the manuf acturer s instr uctions when installing the product and use mounting accessor ies recommended by the manuf acturer . The apparatus should not be e xposed to dr ipping or splashing w ater ; no objects filled with liquids should be placed on the apparatus . Terminals ma rked with the lightning bolt are hazardous li ve; the e xter nal wir ing connected to these ter minals require installation by an instr ucted person or the use of ready made leads or cord s. Ensure that proper v entilation is pro vided around the applianc e. Do not install near any heat sources such as radiator s, heat register s, stoves, or other apparatus (including amplifiers) that produce heat . No nak ed flame source s, such as lighted candle s, should be placed on the apparatus . Po wer Co rd Do not def eat the saf ety pur pose of the pola rized or grounding-type plug . A pola rized plug has two b lades with one wider than the othe r. A grounding type plug has two b lades and a third grounding prong . The wide b lade or the third prong are pro vided f or your sa fety. If the provided plug does not fit into y our outlet, consult an electr ician f or replacement of the obsolete outlet . The AC supply cord should be routed so that it is unlik ely that it will be damaged . If the AC supply cord is damaged DO NO T OPER ATE THE UNIT . Unplug this apparatus dur ing lightning stor ms or when unused f or long per iods of tim e. ServiceThe unit should be ser viced only by qualified ser vice personnel . AVIS : AFIN DE REDUIRE LES RISQUE DE CHOC ELECTRIQUE, NENLEVEZ P AS LE COUVE RT (OU LE PANNEA U ARRIERE) NE CONTIENT A UCUNE PIECE REP ARABLE P AR L UTILISA TEUR. CONSUL TEZ UN TECHNICIEN QU ALIFIE POUR L ENTRETIENT Instructions relatives au risque de feu, choc électrique, ou blessures aux per sonnes Veuillez Lire le Manuel: Il contient des inf ormations qui de vraient êtres compr ises avant lopération de v otre appareil. Conse rvez. Gardez S.V.P. ces instr uctions pour consultations ultér ieures et obser vez tous les avertissement s. Netto yez seulement avec le tissu sec . Emballage: Conse rvez la boite au cas ou lappareil de vait être retour ner pour réparation. Aver tissement : Pour réduire le r isque de f eu ou la décharge électr ique , n'e xposez pas cet appareil à la pluie ou à l'humidité . Nutilisez pas cet appareil près de leau! Attention : Lors de lutilisation de produits électr ique , assurez-v ous dadhérer à des précautions de bases incluant celle qui suiv ent : AlimentationLappareil ne doit être branché quà une source dalime\ ntation correspondant au voltage spécifié dans le manuel ou tel quindiqué sur lap\ pareil . Cet appareil est équipé dune pr ise dalimentation polar isée . Ne pas utiliser cet appareil avec un cordon de raccordement à moins quil soit possib le dinsérer complètement les trois lame s. Des précautions doiv ent êtres pr ises afin de viter que le système de mise à la terre de lappareil ne soit désengagé . RisqueNe pas placer cet appareil sur un char iot, un suppor t, un trépied ou une tab le instab les. Lappareil pourrait tomber et b lesser quelquun ou subir des dommages impor tant s. Utiliser seulement un char iot, un suppor t, un trépied ou une tab le recommandés par le fabricant ou v endus avec le produit. Suivre les instr uctions du fabricant pour installer lappareil et utiliser les accessoires recommandés par le f abricant. Il con vient de ne pas placer sur lappareil de sources de flammes nues , telles que des bougies allumée s. Lappeil ne doit pas être e xposé à des égouttements deau ou des éclaboussures et quaucun objet rempli de liquide tel que des v ases ne doit être placé sur lappareil . Assurez que lappareil est f ourni de la propre v entilation . Ne procédez pas à linstallation près de source de chaleur tels que radiateur s, registre de chaleu r, fours ou autres appareils (incluant les amplificateurs) qui produisent de la\ chaleu r. Les dispositifs marqués dune symbole déclair sont des par ties dangereuses au toucher et que les câb lages e xtér ieurs connectés à ces dispositifs de connection extérieure doiv ent être eff ectivés par un opérateur formé ou en utilisant des cordons déjà préparé s. Cor don dAlimentation Ne pas enl ever le dispositif de sécur ité sur la pr ise polar isée ou la pr ise avec tige de mise à la masse du cordon dalimentation . Une pr ise polar isée dispose de deux lames dont une plus large que lautr e. Une pr ise avec tige de mise à la masse dispose de deux lames en plus dune troisième tige qui connecte à\ la mass e. La lame plus large ou la tige de mise à la masse est prévu pour v otre sécur ité. La pr ise murale est désuète si elle nest pas conçue pour accepter ce\ type de pr ise avec dispositif de sécur ité. Dans ce ca s, contactez un électr icien pour f aire remplacer la prise murale . Évitez dendommager le cordon dalimentation . NUTILISEZ P AS LAPP AREIL si le cordon dalimentation est endommagé . Débranchez cet appareil durant les orages ou si inutilisé pendant de longues pér iode s. ServiceConsultez un technicien qualifié pour lentretien de v otre appareil . S2125A
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Configuration The NX720S can be used in several different configurations. The basic system is a single NX720S used for each full-range loudspeaker (multiple NX720Ss can also be used with individual full-range loudspeakers). A single NX720S can also be used with a stereo system if both Input A and Input B are used (see note, below). Note: Left and right signals can be directly connected to a single NX720S maintaining their stereo separation. Plug the two audio signals (left and right) into the Input A and Input B jacks, the NX720S combines the line-level signals properly but also allows you to connect the respected left and right full-range powered loudspeakers by connecting them directly to the Thru jacks. Note: When sending a mono source signal into the NX720S, you can use either Input A or Input B. 1. Input Level Switch The Input Select switch is provided to choose between line-level and speaker level. The line-level position is for use when the NX720S is fed a signal directly from a processor, electronic crossover or the output of an un-powered mixer. When using the line-level mode, the use of balanced (Tip, Ring, Sleeve) and/or XLR cables will reduce the units sensitivity to hum and buzz. This switch should be set to speaker level when the NX720S is fed from the output of an amplifier or a powered-mixer. WARNING: Do not plug in two speaker level sources to a single NX720S. 2. NX720S Level Control The Level control adjusts the amount of bass added to the sound system by the NX720S. This Level Control adjusts for the relative sensitivity of the companion full-range loudspeakers and the desired system frequency response. This control should be set by listening while operating at a medium level and then not changed. Note: It is not recommended to set this control at high levels since the limiter determines the output level. Note: A setting of 0 dB on the NX720S Level control is the correct starting point when setting up a sound system. From there, adjustments can be made for the best sound. The 0 dB mark refers to the setting that will give full power when the line input is used and the input signal is at a level of +4 dBV. 3. Boost Frequency Control The Boost Frequency control allows the user to change the character of the subwoofer sound. This control will have less effect when operating into limiting. 4. HF Rolloff Frequency Control The HF Rolloff Frequency control varies the frequency at which the NX720S rolls off the high frequencies, which provides part of a crossover function. This crossover function also combines with the natural low frequency rolloff inherent of the full-range loudspeaker (when the NX720S is not used with a separate processor). As an example, a Yorkville élite processor may be used to provide the LF rolloff of the full-range loudspeaker. Ideally the NX720S would then be wired ahead of this processor. In this case the NX720S HF rolloff should match the LF crossover point of the separate processor. A separate processor may be used ahead of the NX720S in which case the NX720S HF rolloff should be set to maximum. Most Yorkville powered loudspeakers include a LF rolloff switch, which makes it unnecessary to use an electronic crossover. 5. Input Jacks The inputs are set up to make it easy to hook up your NX720S to almost any audio system with a minimum of hassles. There are two groups of input jacks, Input A and Input B. Each set provides a Thru connection to allow daisy-chaining. Input A jacks includes ¼ inch jacks, a male XLR jack and female XLR jack. Input B jacks use a single XLR male jack and a single female jack. If these two sets of jacks are used simultaneously the signal is mono summed within the NX720S to generate the signal to drive the subwoofer. Introduction Congratulations on your purchase of the NX720S. The NX720S is a premium-quality integrated subwoofer and power amplifier. Its been designed as an easy-to-setup addition to any P.A. and will extend the bass of a typical sound system with the least amount of complication. Note: The NX720S is primarily intended to operate with line-level signals, but will also work with speaker level signals.