Qsc-audio SB-5218 User Manual
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Part of the DCS Digital Cinema Speaker Series, QSC’s
SB-5218 and SB-7218 subwoofers offer a unique
solution that addresses the requirements of digital
motion picture soundtracks. Featuring dual 18" low-
frequency transducers mounted in ported enclosures,
these systems extend response to the lowest audible
frequency.
The two custom 18" transducers were developed
especially for cinema use. The woofers feature
4" voice coils and vented pole pieces to ensure
cool operation, even at high power levels. Cooler
temperatures increase driver lifespan and decrease
power compression at high drive levels. Undercut pole
pieces provide a symmetrical magnetic gap, reducing
second harmonic distortion.
Enclosures are constructed of high-quality MDF
panels and feature individual woofer chambers. The
separate chamber for each transducer makes the
enclosure stronger, provides rigidity, and prevents
cone overexcursion in the rare event of a driver failure.
Enclosure “loading” is not lost for the remaining
transducer.
Large, fully radiused ports ensure smooth airflow,
especially at higher drive levels. This prevents
potentially audible port turbulence noise. Both internal
and external port openings are flared.
With symmetrical port loading, the bass ports are
evenly spaced on each side of the transducers, making
internal pressure more uniform across the back
surface of the woofer. This prevents the cone from
being displaced to one side or another by unbalanced
air pressure, reducing the chance of driving the voice
coil out of the center of the gap at high drive levels.
SB-5218/SB-7218
Cinema Subwoofers
Specifications SB-5218 SB-7218
Frequency Range
1
-6 dB half space 24 Hz - 100 Hz 22 Hz - 100 Hz
-10 dB half space 19 Hz - 250 Hz 19 Hz - 250 Hz
Maximum Output
2
Calculated Peak at Rated Power 135 dB 137 dB
Calculated Continuous 129 dB 130 dB
Impedance 4
Ω nominal 4Ω nominal
Maximum Input Power
3
100 hours of 6 db crest factor 800 W RMS 1200 W RMS
IEC 268 noise spectrum
2 hours of 6 db crest factor 1000 W RMS 1500 W RMS
pink noise, 50 Hz - 20 kHz,
AES method
Recommended Amplifier Power 1600 W RMS maximum 2600 W RMS maximum
Sensitivity 1 watt /1 meter, 99.5 dB 101 dB
half space
Transducers Two 18" (457 mm) 500 W high Two 18" (457 mm) 700 W high
efficiency subwoofer transducers efficiency subwoofer transducers
featuring 4" (100 mm) copper featuring 4" (100 mm) copper
coils on Kapton formers coils on Kapton formers
Recommended Processing LF boost frequency = 25 Hz, Q = 2.0, Gain = +6 dB provided by QSC,
SF-3 or DCM
Connectors Barrier strip screw terminals accept up to #10 AWG stranded wire
Enclosure B6 alignment, vented enclosure with summetrical port design, tuned to
25 Hz, constructed of MDF and heavily braced. Features vandal resistant
woofer mounting bolts
Dimensions (HWD) 30" x 48" x 24"
(762 mm x 1220 mm x 610 mm)
Weight - Net 205 lbs (93 kg) 210 lbs (95 kg)
1) All frequency ranges specified refer to measured free field response (half space, 2π).
2) Calculated SPL at 1m, (half space, 2π), speaker operating at rated RMS power with pink noise within specified frequency range.
3) Maximum input power tested in accordance with IEC 268-5 recommendations, 50 Hz - 20 kHz band limiting, 6 dB signal crest factor.
Features
• SB-5218 features dual 500 W transducers
• SB-7218 features dual 700 W transducers
• Frequency range extends to below 25 Hz when used with
the correct B6 filter
• DCM and SF-3 signal processors optionally available
• Enclosures feature vandal-resistant woofer mounting bolts
• THX
™ approved for professional cinema applications
THX is a trademark of THX Ltd.
Summary of Contents
Page 1 - SB-5218/SB-7218
Part of the DCS Digital Cinema Speaker Series, QSC’s SB-5218 and SB-7218 subwoofers offer a unique solution that addresses the requirements
Page 2
ES8Garantía (sólo en EE.UU.; en otros países, consulte a su concesionario o distribuidor)RenunciaQSC Audio Products, Inc. no es responsable por ningún
Page 3
FR9Manuel d'utilisation de systèmes de haut-parleurs de cinéma Doubles caisson d'extrêmes graves de 45,7 cm SB-5218 et SB-7218IntroductionLe
Page 4 - Connections
FR10BranchementsBranchement normalLe branchement du SB-5218/7218 se fait à partir de bornes vissables de bornier à cloisons. Les bornes acceptent des
Page 5
FR11Caractéristiques techniques (sujettes à modification sans préavis)SB-5218 SB-7218Plage de fréquence : 24 à 100 Hz (±3 dB) 22 à 100 Hz (±3 dB)19 à
Page 6 - Contacting QSC Audio Products
FR12Garantie (États-Unis seulement ; dans les autres pays, consulter le revendeur ou le distributeur)Avis de non-responsabilitéQSC Audio Products, Inc
Page 7
DE13Kinolautsprecheranlagen - BenutzerhandbuchSubwoofer SB-5218 und SB-7218 mit 18-Zoll-DoppelwandlerEinführungDie speziell für Kino-Anwendungen konst
Page 8 - Conexiones
DE14VerbindungenNormaler AnschlussDas Modell SB-5218/7218 wird über Barrier-Strip-Schraubklemmen angeschlossen. Die Klemmen können Lautsprecher-Litzen
Page 9
DE15Technische Daten (können jederzeit ohne vorherige Mitteilung geändert werden)SB-5218 SB-7218Frequenzbereich: 24 - 100 Hz (±3 dB) 22 - 100 Hz (±3
Page 10
DE16Garantie (nur für die USA; wenden Sie sich zwecks Garantieinformationen für andere Länder an Ihren Händler oder Distributor)HaftungsausschlussQSC
Page 11 - *TD-000150-00*
CH17影院扬声器系统用户手册SB-5218 和 SB-7218 双 -18” 亚低音扬声器简介SB-5218 和 SB-7218 为影院亚低音扬声器特别设计，具有双 500 和 700 瓦 , 18” (460 毫米 ) 低频换频器安装在端口机罩的特色。机罩调整为 25 赫兹并使用 B6 排列。这
Page 12 - Branchements
SB-5218/SB-7218Dimensionsqscaudio.comSpecifications subject to change without notice.1675 MacArthur Boulevard • Costa Mesa, CA 92626 • Ph: 800/854-407
Page 13
CH18连接正常连接SB-5218/7218 有用于连接用于连接阻挡带螺旋式终端。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 SB-5218/7218 的并联SPK2 终端标记可以用
Page 14
CH19产品规格如有改变恕不另行通告。SB-5218 SB-7218频率范围 24 - 100 赫兹 ( ± 3 dB) 22 - 100 赫兹 ( ± 3 dB)19 - 250 赫兹可用范围 (-10 dB) 19 - 250 赫兹可用范围 (-10 dB)最大输出135 dB SPL 计算峰
Page 15
CH20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 Produ
Page 16 - Verbindungen
EN1*TD-000150-00*Cinema Loudspeaker Systems User ManualSB-5218 and SB-7218 Dual-18” SubwoofersIntroductionThe SB-5218 and SB-7218 are specially design
Page 17
EN2ConnectionsNormal ConnectionThe SB-5218/7218 has barrier strip screw ter-minals for connection. The terminals accept up to #10 AWG stranded loudspe
Page 18
EN3Specifications (subject to change without notice)SB-5218 SB-7218Frequency Range: 24 - 100 Hz (±3 dB) 22 - 100 Hertz (±3 dB)19 - 250 Hz useable ran
Page 19
EN4Warranty (USA only; other countries, see your dealer or distributor)DisclaimerQSC Audio Products, Inc. is not liable for any damage to amplifiers,
Page 20
ES5Manual del usuario de los sistemas de altavoces para salas de cine Subwoofers dobles de 18" SB-5218 y SB-7218IntroducciónLos subwoofers SB-521
Page 21 - 产品规格如有改变恕不另行通告。
ES6ConexionesConexión normalEl SB-5218/7218 tiene terminales de tornillo de barra protectora para su conexión. Los terminales aceptan cableado trenzad
Page 22 - 联系 QSC Audio Products
ES7Especificaciones (sujetas a cambio sin previo aviso).SB-5218 SB-7218Intervalo de frecuencia: 24 - 100 Hz (±3 dB) 22 - 100 Hertz (±3 dB)Intervalo ú
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