QSC LF-4215 Manual Del Usuario
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Cinema Loudspeaker Systems User Manual
LF-4215
Low Frequency Loudspeaker
Introduction
The LF-4215 dual 15" (381mm) low frequency enclosure is designed specifically for cinema
applications. Meeting cinema requirements for extended low frequency response differenti-
ates the LF-4215 from more conventional "rock-and-roll" woofer systems. The LF-4215 cov-
ers the frequency range from 35 Hertz to 1000 Hertz, depending upon the high frequency
system requirements. Close Coupled Woofers (CCW), with its tight spacing between woof-
ers, improves coupling and keeps coverage angles wide over a greater frequency range than
more widely spaced designs.
The two custom 400 watt, 15" transducers were developed especially for cinema use. They
feature extremely large 4" (100mm) voice coils and a multi-vented pole piece to ensure cool
operation, even at high power levels. Cooler temperatures increase transducer lifespan and
decrease the problem of power compression at high drive levels. An undercut pole piece
ensures the voice coil operates in a Symmetrical Magnetic Gap (SMG), reducing second har-
monic distortion.
The enclosure is constructed of high quality MDF panels and features Single Woofer Cham-
bers (SWC, separate chambers for each transducer). In the rare event of a transducer failure,
this prevents over-excursion of the remaining transducer caused by improper box loading.
Large, Fully Radiused Ports (FRP) ensure smooth air flow through the ports, especially at
higher drive levels. This prevents potentially audible port turbulence noise. Both internal and
external port openings are fully radiused.
With Symmetrical Port Loading (SPL), bass ports are evenly spaced on each side of the trans-
ducers, making internal pressure more uniform across the back surface of the transducer.
This prevents the cone from being displaced to one side or another by unbalanced forces,
reducing the chance of driving the voice coil out of the center of the gap at high drive levels.
Three T-nuts in the top of the enclosure provide easy mounting of QSC high frequency sys-
tems.
Enclosure is not designed to be suspended, flown, or rigged. Do not sus-
pend, fly, or rig this enclosure.
This product is capable of producing sound pressure levels that can perma-
nently damage human hearing. Always keep sound pressure levels in the
listening area below levels that can damage human hearing.
Install in accordance with QSC Audio Product's instructions and a
licensed, professional engineer. Only use attachments, mounts, accesso-
ries, or brackets specified by QSC Audio Products, Inc. Refer all servicing
to qualified personnel. Servicing is required when the apparatus has been
damaged in any way.
WARNING! Before placing, installing, rigging, or suspending any speaker
product, inspect all hardware, suspension, cabinets, transducers, brackets
and associated equipment for damage. Any missing, corroded, deformed or
non-load rated component could significantly reduce the strength of the
installation, placement, or array. Any such condition severely reduces the
safety of the installation and should be immediately corrected. Use only
hardware which is rated for the loading conditions of the installation and
any possible short-term unexpected overloading. Never exceed the rating
of the hardware or equipment. Consult a licensed, professional engineer
when any doubt or questions arise regarding a physical equipment installa-
tion.
All manuals and user guides at all-guides.com
1675 MacArthur Blvd., Costa Mesa, CA, 92626 USA
Main Number (714) 754-6175 Sales & Marketing (714) 957-7100 or toll free (USA only) (800) 854-4079
Customer Service(714) 957-7150 or toll free (USA only) (800) 772-2834
*TD-000141-00*
© Copyright 2003, 2004, QSC Audio Products, Inc.
QSC® is a registered trademark of QSC Audio Products, Inc.
"QSC" and the QSC logo are registered with the U.S. Patent and Trademark Office
EN
TD-000141-00 rev.B
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Resumen de contenidos para QSC LF-4215

  • Página 1 This prevents the cone from being displaced to one side or another by unbalanced forces, reducing the chance of driving the voice coil out of the center of the gap at high drive levels. Three T-nuts in the top of the enclosure provide easy mounting of QSC high frequency sys- tems.
  • Página 2 LF-4215 in parallel. Con- nect the wires as shown in the illustration, at right. Note: If the LF-4215’s internal wir- ing has been modified in any way, this may not function. If this is the case, remove the...
  • Página 3 99.5 dB half space, 93.5 dB full space, 35 - 1000 Hertz, 1 watt, 1 meter Recommended Processing: Subsonic filter below 30 Hertz, >18 dB per octave, maximum recommended crossover frequency is 1000 Hertz. QSC DSP configurations are available at www.qscaudio.com. Parameters for alternative processing hardware are available upon request.
  • Página 4: Contacting Qsc Audio Products

    Warranty (USA only; other countries, see your dealer or distributor) Disclaimer QSC Audio Products, Inc. is not liable for any damage to amplifiers, or any other equipment that is caused by negligence or improper installation and/or use of this loudspeaker product.
  • Página 5 LF-4215 de otros sistemas woofer tipo “rock-and-roll” más convencionales. El altavoz LF-4215 cubre un intervalo de frecuencia de 35 Hertz a 1000 Hertz, dependiendo de los requisitos del sistema de alta frecuencia. Woofers acoplados cerrados (Close Coupled Woofers, CCW), con su espacio estrecho entre los woofers, mejora el acoplamiento y mantiene la amplitud de los ángulos de cobertura sobre un mayor intervalo de...
  • Página 6: Conexiones

    All manuals and user guides at all-guides.com Conexiones Ejemplo de una conexión normal: Conexión normal El altavoz LF-4215 tiene terminales de tornillo de barra protectora para su conexión. Los terminales aceptan cableado trenzado de hasta #10 AWG para altavoces. Use el alambre del calibre más grande y de la longitud más corta posible...
  • Página 7 Filtro subsónico menor de 30 Hertz, >18 dB por octava, la frecuencia máxima de cruce recomendada es de 1000 Hertz. Las configuraciones DSP de QSC están disponibles en www.qscaudio.com. Los parámetros para el herraje de procesamiento alternativo están disponibles si así se solicitan.
  • Página 8: Cómo Comunicarse Con Qsc Audio Products

    Garantía (sólo en EE.UU.; en otros países, consulte a su concesionario o distribuidor) Renuncia QSC Audio Products, Inc. no es responsable por ningún daño a los amplificadores, ni a ningún otro equipo que sea causado por negligencia o instalación y/o uso inadecuado de este altavoz.
  • Página 9 LF-4215 des systèmes de haut-parleurs de graves « rock-and-roll » plus conventionnels. Le LF-4215 couvre la plage de fréquence de 35 à 1 000 Hz, selon les exigences de haute fréquence du système. Les haut-parleurs de graves attenants (CCW) améliorent le couplage et permettent des angles de couverture larges sur...
  • Página 10 All manuals and user guides at all-guides.com Branchements Branchement normal Exemple de branchement Le branchement du LF-4215 se fait à partir normal : de bornes vissables de bornier à cloisons. Les bornes acceptent des câbles de haut- parleurs toronnés pouvant atteindre #10 AWG.
  • Página 11 Filtre subsonique inférieur à 30 Hz, >18 dB par octave ; fréquence de filtre passif maximale recommandée : 1 000 Hz. Les configurations des processeurs de champs sonores numériques QSC sont disponibles sur le site www.qscaudio.com. Les paramètres concernant d'autres matériels de traitement sont disponibles sur demande.
  • Página 12: Pour Contacter Qsc Audio Products

    QSC Audio Products - Garantie limitée de 3 ans QSC Audio Products, Inc. (« QSC ») garantit que ses produits sont dépourvus de tout vice de fabrication et /ou de matériel pendant une période de trois (3) ans à partir de la date de vente et remplacera les pièces défectueuses et réparera les produits qui fonctionnent mal dans le cadre de cette garantie si le défaut survient dans des conditions normales d’installation et...
  • Página 13 Niederfrequenzgang die Voraussetzung für Kinoanwendungen erfüllt, unterscheidet sie sich von konventionellen „Rock-and-Roll“-Tieftonlautsprechern. Je nach den Anforderungen der Hochfrequenzanlage deckt das Modell LF-4215 den Frequenzbereich zwischen 35 und 1000 Hz ab. Durch die eng nebeneinander angeordneten, direktgekuppelten Tieftonlautsprecher (CCW - Close Coupled Woofers) werden im Vergleich zu Anordnungen mit größeren Abständen eine optimierte...
  • Página 14 Anlage achten. Beispiel eines parallelen Paralleler Anschluss des zweiten Anschlusses: SB-5218 Ein weiterer LF-4215 kann über die mit der Bezeichnung SPK2 gekennzeichnete Klemme parallel angeschlossen werden. Die Drähte wie in der rechten Abbildung dargestellt anschließen. Hinweis: Wenn die interne Verdrahtung des LF-4215 auf irgendeine Weise modifiziert wurde, ist dieser Anschluss möglicherweise nicht...
  • Página 15 99,5 dB Halbraum, 93,5 dB Vollraum, 35 - 1000 Hz, 1 W, 1 m Empfohlene Verarbeitung: Untertonfrequenzfilter unter 30 Hz, >18 dB je Oktave, empfohlene maximale Crossover-Frequenz: 1000 Hz QSC DSP-Konfigurationen können im Internet unter www.qscaudio.com eingesehen werden. Parameter für alternative Verarbeitungshardware sind auf Anfrage erhältlich.
  • Página 16: Kontaktaufnahme Mit Qsc Audio Products

    Garantie (nur für die USA; wenden Sie sich zwecks Garantieinformationen für andere Länder an Ihren Händler oder Distributor) Haftungsausschluss QSC Audio Products, Inc. ist nicht für Schäden an Verstärkern oder anderen Geräten haftbar, die durch Fahrlässigkeit oder eine unsachgemäße Installation und/oder Verwendung dieses Lautsprecherprodukts verursacht werden. Beschränkte Dreijahresgarantie durch QSC Audio Products QSC Audio Products, Inc.
  • Página 17 All manuals and user guides at all-guides.com 影院扬声器系统用户手册 LF-4215 低频扬声器 简介 LF-4215 双 15” (381 毫米 ) 的低频机壳专为影院应用设计。LF-4215 和传 统 “摇滚”低音系统的不同之处在于它可以满足影院对扩展低频响应的要 求。根据高频系统的要求,LF-4215 可覆盖 35 赫兹到 1000 赫兹的频率范 围。 由于强耦合低音扬声器 (CCW)的低音扬声器之间间距小,因此和大间 距设计相比,具有耦合好,较大频率范围覆盖角度宽的特点。 两个定制 400 瓦,15” 换频器专为影院使用开发。特别具有超大 4” (100 毫米 ) 音圈和一个多通风极片。确保即使在高功率的情况下, 也能保持清凉...
  • Página 18 连接 正常连接样例: 正常连接 LF-4215 具有用于连接的阻挡带螺 旋式终端。此终端接受高达 #10AWG 的绞合式扬声器布线。对于特定的 安装,尽可能使用最大电线尺寸和 最短电线长度。观察极性标志,确 保整个系统的极性一致,以便获得 最佳表现。 并联样例: 第二个 SB-5218 并联 终端标志 SPK2 可用于并联另一个 LF-4215。按照右图所示连接线路。 注意:如果 LF-4215 的内部连线经 过任何修改,便不会起作用。如果 情况如此,拿掉终端杯,然后验证 有无工厂黄色跳线和蓝色跳线电线 ;按要求修改或者对此扬声器进行 维修。 单个换频器 单个换频器连接 (需要修改) 连接样例: 换频器在机罩内的电线为并行。如 果要求单个换频器连接,拿掉终端 杯,然后拿掉连接在 SPK1 和 SPK2 终端间的黄色和蓝色跳线电线。换 掉终端杯,然后在机罩上作修改标...
  • Página 19 灵敏度 99.5 dB 半间距, 93.5 dB 全间距, 35 - 1000 赫兹, 1 瓦, 1 米 推荐处理 此因素过虑低于 30 赫兹, > 每八度音程 18 dB 最大推荐交叉音频为 1000 赫兹。在 www.qscaudio.com 网站可获得 QSC DSP 的配置情况。如有要求即可获得替换处理硬件的参 数。 连接器 阻挡带螺旋式终端接受高达 #10 AWG 绞合式电线。四个终端 ( 两个输入和两个并行输出 )。...
  • Página 20 All manuals and user guides at all-guides.com 保修 (仅限美国;其它国家,请联系您的经销商或分销商) 声明 QSC Audio Products, Inc。 不承担任何因疏忽、或不当安装和 / 或不当使用本放大器产品而对扬声器 或任何其它设备造成任何损坏的责任。 QSC Audio Products3 年有限质保协议。 QSC Audio Products, Inc. (QSC )担保其产品自销售日起三年内不会发生材料或制造工艺缺陷,若 在正常安装和使用条件下发生的损坏,QSC 将按照本质保协议更换有缺陷的零件和维修故障产品 – 但 您要将本产品送回我们的工厂或任一授权维修点, 预付运送费用并附带一份购买证明即销售收据影印 本。此质保协议规定,退回的产品检查必须标明经我们判断的制造缺陷。本质保不适用于任何因误用、 疏忽、意外事故、不正确地安装,或日期编码被去掉或破损的产品。QSC 不对意外和/或间接发生的损 害承担责任。此质保赋于您特定的法律权力。此有限质保在保证期内可自由转让。 在不同的州,顾客可能会有额外的权利。 此质保协议不适用于出口或不在美国销售而生产的产品。产品上缺少序列号,或者从非授权销售商处购...

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