QSC SC-422 User Manual

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Developed specifically for the unique requirements
of professional motion picture playback, the SC-422
extends QSC’s commitment to the cinema market. As
a member of the DCS Digital Cinema Speaker Series,
the SC-422 is a two-way, bi-amplified screen channel
loudspeaker system comprised of two main units—the
HF-75 high-frequency system and the LF-4215 low-
frequency system.
The HF-75 high-frequency system features a large
format, 3" (75mm) titanium diaphragm compression
driver mounted on a custom designed high-frequency
cinema horn with an adjustable pan and tilt bracket.
The HF-75 includes a driver protection and equalization
network. DC blocking capacitors protect against DC or
low-frequency signals that would likely destroy an
unprotected driver. Power limiter circuitry protects the
driver from overpowering and a response correction
filter smoothes the frequency response of the horn/
driver combination. The driver and equalization
network provides for more reliable operation, ensuring
the show will go on.
The LF-4215 dual 15" (381mm) low-frequency
enclosure is designed specifically to address the
extended low-frequency response required for cinema
applications. The LF-4215 covers the frequency range
from 35 Hz to 1000 Hz, depending upon the
high-frequency system requirements. Close Coupled
Woofers (CCW), with their tight spacing between
woofers, improves coupling and keeps coverage
angles wide over a greater frequency range than more
widely spaced designs.
The SC-422 is designed for ease of installation.
The HF-75 components come pre-assembled to
reduce field assembly time. Three bolts are all that
are required to secure the HF-75 to the top of the
LF-4215 enclosure.
SC-422
Cinema Loudspeaker System
Specifications SC-422
Nominal Coverage 90° horizontal x +20 to -30° vertical
Frequency Range 38 Hz - 16 kHz (-6 dB)
Crossover Frequency 700 Hz, 24 dB per octave
LF-4215 HF-75
Impedance 4Ω 8Ω
Sensitivity 1 watt /1 meter, 99.5 dB 107.5 dB
half space
Maximum Input Power
1
8 hours of 6 db crest factor 800 W RMS 60 W RMS
IEC 268 noise spectrum
2 hours of 6 db crest factor 1000 W RMS 80 W RMS
pink noise, 50 Hz - 20 kHz,
AES method
Recommended Amplifier Power 1600 W RMS maximum 100 W RMS maximum
Recommended Processing Subsonic filter below 30 Hz, 4th order LR crossover at 1000 Hz
> 18 dB per octave
Connectors Barrier strip screw terminals Barrier strip screw terminals
accept up to #10 AWG accept up to #10 AWG
stranded wire stranded wire
Transducers Two 15" (381mm) high efficiency, 1.5" (38mm) exit, 3" titanium
extended bass woofer featuring diaphragm compression driver
4" copper voice coils
Enclosure Quasi B4 alignment, ported Tilt/Pan Bracket
enclosure with fully flared ports, ±1vertical tilt
symmetrical port design, tuned to ±1horizontal pan
36 Hz, constructed of MDF and
heavily braced. Features vandal
resistant woofer mounting bolts
Dimensions (HWD) 36" x 30" x 20.3" 16" x 30" x 20"
(910 mm x 762 mm x 516 mm) (406 mm x 762 mm x 508 mm)
Weight - Net 172 lbs (78 kg) 40 lbs (18.4 kg)
System Weight 212 lbs (96.4 kg)
Baffle Cut-Out 53" x 32"
1) Maximum input power tested in accordance with IEC 268-5 recommendations, 50 Hz - 20 kHz band limiting, 6 dB signal crest factor.
Features
Two-way, bi-amplified screen channel system
HF-75 provides 90° horizontal by +20° to -30° vertical coverage
LF-4215 is constructed of MDF and features single woofer chambers
Low-distortion waveguide provides highly articulate dialogue
Shallow depth (20
") facilitates installation
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Summary of Contents

Page 1 - Cinema Loudspeaker System

Developed specifically for the unique requirements of professional motion picture playback, the SC-422 extends QSC’s commitment to the cine

Page 2 - Dimensions

Warranty (USA only; other countries, see your dealer or distributor)DisclaimerQSC Audio Products, Inc. is not liable for any damage to amplifiers, or

Page 3 - *TD-000149-00*

Manual del usuario de los sistemas de altavoces para salas de cineComponente de alta frecuencia HF-75IntroducciónEl HF-75 es el componente de alta fre

Page 4 - Connections

ConexionesEl HF-75 tiene terminales de tornillo de barra protectora que aceptan alambre trenzado de calibre de hasta #10 AWG para altavoces.Terminales

Page 5

Especificaciones del sistema HF-75 (sujetas a cambio sin previo aviso)Intervalo de frecuencias: 600 – 16 kHz (-6 dB, espacio completo)Cobertura nomina

Page 6

Garantía (sólo para EE.UU.; para otros países, consulte con su vendedor o distribuidor)Renuncia de responsabilidadQSC Audio Products, Inc. no es respo

Page 7 - *TD-000141-00*

Manual del usuario de los sistemas de altavoces para salas de cineAltavoz de baja frecuencia LF-4215IntroducciónLa caja doble de baja frecuencia de 15

Page 8

ConexionesConexión normalEl altavoz LF-4215 tiene terminales de tor-nillo de barra protectora para su conexión. Los terminales aceptan cableado trenza

Page 9

Especificaciones del sistema LF-4215 (sujetas a cambio sin previo aviso)Intervalo de frecuencias: 38 - 1300 Hertzios (±3 dB) Intervalo utilizable de

Page 10 - Contacting QSC Audio Products

Garantía (sólo para EE.UU.; para otros países, consulte con su vendedor o distribuidor)Renuncia de responsabilidadQSC Audio Products, Inc. no es respo

Page 11 - Introducción

Manuel d'utilisation de systèmes de haut-parleurs de cinéma Composant haute fréquence HF-75 IntroductionLe HF-75 est le composant haute fréquence

Page 12 - Conexiones

SC-422Dimensionsqscaudio.comSpecifications subject to change without notice.1675 MacArthur Boulevard • Costa Mesa, CA 92626 • Ph: 800/854-4079 or 714/

Page 13

BranchementsLe HF-75 a des bornes vissables de bornier à cloisons qui acceptent des conducteurs de haut-parleurs toronnés pouvant atteindre #10 AWG.Bo

Page 14

Caractéristiques techniques du HF-75 (sujettes à modification sans préavis)Plage de fréquence : 600 à 16 kHz (-6 dB, espacement total)Couverture nomin

Page 15

Garantie (États-Unis seulement ; dans les autres pays, consulter le revendeur ou le distributeur)Avis de non-responsabilitéQSC Audio Products, Inc. n&

Page 16

Manuel d'utilisation de systèmes de haut-parleurs de cinéma Haut-parleur basse fréquence LF-4215 IntroductionL'enceinte basse fréquence doub

Page 17

BranchementsBranchement normalLe branchement du LF-4215 se fait à partir de bornes vissables de bornier à cloisons. Les bornes acceptent des câbles de

Page 18

Caractéristiques techniques du LF-4215 (sujettes à modification sans préavis)Plage de fréquence : 38 à 1 300 Hz (±3 dB) 30 à 1 400 Hz (plage utile) (-

Page 19 - Introduction

Garantie (États-Unis seulement ; dans les autres pays, consulter le revendeur ou le distributeur)Avis de non-responsabilitéQSC Audio Products, Inc. n&

Page 20 - Branchements

Kinolautsprecheranlagen - Benutzerhandbuch Hochfrequenzkomponente HF-75EinführungDie Hochfrequenzkomponente HF-75 ist Bestandteil der Zweiweg-Lautspre

Page 21

VerbindungenDie Komponente HF-75 ist mit Barrier-Strip-Schraubklemmen für Lautsprecher-Litzendraht mit einem maximalen Querschnitt von 10 AWG (5,2 mm2

Page 22

HF-75 - Technische Daten (können jederzeit ohne vorherige Mitteilung geändert werden)Frequenzbereich: 600 Hz - 16 kHz (-6 dB, Vollraum)Nominelle Abstr

Page 23 - LF-4215

*TD-000149-00*Cinema Loudspeaker Systems User ManualHF-75 High Frequency ComponentIntroductionThe HF-75 is the high frequency component of the SC-412

Page 24

Garantie (nur für die USA; wenden Sie sich zwecks Garantieinformationen für andere Länder an Ihren Händler oder Distributor)HaftungsausschlussQSC Audi

Page 25

Kinolautsprecheranlagen - BenutzerhandbuchNiederfrequenzlautsprecher LF-4215EinführungDas Gehäuse des LF-4215-Lautsprechers mit zwei 15-Zoll- (381-mm-

Page 26

VerbindungenNormaler AnschlussDas Modell LF-4215 wird über Barrier-Strip-Schraubklemmen angeschlossen. Die Klemmen können Lautsprecher-Litzendraht bis

Page 27 - Hochfrequenzkomponente HF-75

LF-4215 - Technische Daten (können jederzeit ohne vorherige Mitteilung geändert werden)Frequenzbereich: 38 Hz - 1300 Hz (±3 dB) Nutzbereich 30 - 1400

Page 28 - Verbindungen

Garantie (nur für die USA; wenden Sie sich zwecks Garantieinformationen für andere Länder an Ihren Händler oder Distributor)HaftungsausschlussQSC Audi

Page 29

影院扬声器系统用户手册HF-75 高频组件简介HF-75 是 SC - 412 和 SC - 422 的高频组件,SC - 412 和 SC - 422 为双向,双放大屏幕的通道放大器,用于高效能的影院。 该系统运输时作为两个独立的组件:HF-75 高频系统和LF-4115 或 LF-4215 低

Page 30

连接HF-75 具有阻挡带螺旋式终端,可以接受高达 #10 AWG 绞合式扬声器电线。HF 输入终端将放大器的输出信号连接到扬声器的 HF 输入终端。观察正确的极性;放大器+信号到扬声器+ HF 输入,放大器-信号到扬声器- HF 输入。使用最大导线尺寸和最短长度。注意 ! 整个系统保持正确的扬声器

Page 31 - LF-4215

HF-75 产品规格 ( 如有改变恕不另行通告 )频率范围 : 600 - 16k Hz (-6 dB, 全间距 )标称覆盖范围 : 90° 水平 X +15° 到 -35° 垂直 ( 总计 50°,可调式安装提供垂直平面调整。紧固螺丝前,透过改变 LF-4215 机罩上的位置可以调整水平平面。

Page 32

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损坏的任何责任。QSC Audio Products3 年有限质保协议。QSC Audio Products,

Page 33

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

Page 34

ConnectionsThe HF-75 has barrier strip screw terminals that accept up to #10 AWG stranded loudspeaker wire.HF INPUT TerminalsConnect the amplifier’s

Page 35 - HF-75 高频组件

连接正常连接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的绞合式扬声器电线。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,确保整个系统极性一致,以便获得最佳表现。第二个 SB-5218 并联终端标志 SPK2 可用于并联另一个LF-4215。按照

Page 36

LF-4215 产品规格 ( 如有改变恕不另行通告 )频率范围: 38 - 1300赫兹(±3 dB) 30 - 1400 赫兹可用范围 (-10 dB)标称覆盖范围: 600 赫兹时 100°水平 X 55°垂直 最大输出:134.5 dB SPL 计算峰值、1 米、半间距、在额定 rms 功率

Page 37 - HF-75 产品规格 ( 如有改变恕不另行通告 )

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损坏的任何责任。QSC Audio Products3 年有限质保协议。QSC Audio Products,

Page 38 - 联系 QSC Audio Products

HF-75 Specifications (subject to change without notice)Frequency Range: 600 - 16k Hz (-6 dB, full space)Nominal Coverage: 90° horizontal X +15° to -35

Page 39 - LF-4215 低频扬声器

Warranty (USA only; other countries, see your dealer or distributor)DisclaimerQSC Audio Products, Inc. is not liable for any damage to amplifiers, or

Page 40

*TD-000141-00*Cinema Loudspeaker Systems User ManualLF-4215 Low Frequency LoudspeakerIntroductionThe LF-4215 dual 15” (381mm) low frequency enclosure

Page 41 - LF-4215 产品规格 ( 如有改变恕不另行通告 )

ConnectionsNormal ConnectionThe LF-4215 has barrier strip screw termi-nals for connection. The terminals accept up to #10 AWG stranded loudspeaker wir

Page 42

LF-4215 Specifications (subject to change without notice)Frequency Range: 38 - 1300 Hertz (±3 dB) 30 - 1400 Hertz useable range (-10 dB)Nominal Covera

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