QSC LF-3115 - Manual

QSC LF-3115 – Manual, read for free online in PDF format. We hope this helps you resolve any issues you may have. If you have further questions, please contact us through the contact form.

Page 2 – Connections; Normal Connection; The terminals marked; OUTPUT; may be; Normal Connection Example:
Page 3 – allel; SP
Page 4 – Contacting QSC Audio Products
Page 5 – Puntos de montaje para el
Page 6 – Conexiones; Conexión normal; Los terminales marcados; SALIDA; se; Ejemplo de una conexión normal:
Page 7 – Especificaciones del sistema LF-3115; Intervalo de frecuencias:; SPL e impedancia en función de la Frecuencia
Page 8 – Cómo comunicarse con QSC Audio Products
Page 9 – Points de fixation d'un
Page 10 – Branchements; Branchement normal; Les bornes marquées; peuvent; Exemple de branchement normal :
Page 11 – Caractéristiques techniques du LF-3115; Couverture nominale :; SPL et impédance par rapport à la fréquence
Page 12 – Pour contacter QSC Audio Products; Kapton® est une marque déposée de E.I. du Pont de Nemours and Company.
Page 13 – Befestigungspunkte für
Page 14 – Verbindungen; Normaler Anschluss; gekennzeichnete; Beispiel eines normalen Anschlusses:
Page 15 – (können jederzeit ohne vorherige Mitteilung geändert werden); Nominelle Abstrahlung:; Versandgewicht 44 kg, Nettogewicht 38 kg; SPL und Impedanz im Verh. zur Frequenz
Page 16 – Kontaktaufnahme mit QSC Audio Products
Page 17 – “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。; 高频系统安装点
Page 18 – 连接; 正常连接
Page 20 – 保修 (仅限美国其它国家,请联系您的经销商或分销商); 在不同的州,顾客可能会有额外的权利。; 联系 QSC Audio Products; 004 “QSC”以及 QSC 的标志在美国专利和商标管理局注册。

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*TD-000172-00*

Cinema Loudspeaker Systems User Manual

LF-3115

Low Frequency Loudspeaker

Introduction

The LF-3115 15” (381mm) low frequency enclosure is designed specifically for cinema appli-
cations. Meeting cinema requirements for extended low frequency response differentiates
the LF-3115 from more conventional “rock-and-roll” woofer systems. The LF-3115 covers the
frequency range from 33 Hertz to 1900 Hertz, depending upon the high frequency system
requirements.

The 300 watt, 15” transducer is well suited for cinema use. It features a 3” (76mm) voice
coil, ceramic magnet, and a multi-vented pole piece to ensure cool operation. Cooler temper-
atures increase transducer lifespan and decrease the problem of power compression at high
power levels. The suspension and voice coil of the transducer have been designed to provide
low distortion and high impact bass at high power.

The enclosure is constructed of high quality medium density fiberboard panels with stiffen-
ing braces on all panels. Both internal and external port openings are fully radiused ensuring
smooth air flow at higher power levels, preventing audible port turbulence. The stiffening
braces reduce panel resonance.

Bass ports are evenly spaced on each side of the transducer, making internal pressure more
uniform across the back surface of the transducer. This prevents the cone from being dis-
placed 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 power.

Three T-nuts in the top of the enclosure provide easy mounting of QSC high frequency sys-
tems, such as the HF-63.

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.

TD-000172-00 rev.C

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

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

Mounting points for

high frequency system

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Summary

Page 2 - Connections; Normal Connection; The terminals marked; OUTPUT; may be; Normal Connection Example:

Connections Normal Connection The LF-3115 has barrier strip screw termi-nals for connection. The terminals accept up to #10 AWG (5.3mm 2 ) stranded loud- speaker wiring. Use the largest wire size and shortest wire length possible for a given installation. Observe the polarity markings and keep polar...

Page 3 - allel; SP

LF-3115 Specifications (subject to change without notice) Frequency Range: 33 - 1900 Hertz (-6dB) 30 - 3200 Hertz useable range (-10dB) Nominal Coverage: 100° horizontal X 100° vertical at 1000 Hertz Maximum Output: 126.5dB SPL calculated peak, 1 meter, half space, at rated rms power with 6 dB crest...

Page 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. QSC Audio Products 3 Year Limited ...