Cinema Loudspeaker Systems User Manual
HF-63High Frequency Component
Introduction
The HF-63 is the high frequency component of two-way, biamplified screen channel loudspeaker systems for high performance cinema applications. It was designed to operate with and be directly mounted on QSC’s LF-3115 or LF-3215 cinema woofer.
The HF-63 high-frequency system features a large format, 2.5” (63.5mm) titanium diaphragm compression driver mounted on a custom designed high- frequency cinema horn with an adjustable pan and tilt bracket. The horn fea- tures broad horizontal and vertical coverage angles to ensure coverage of every seat in the auditorium. The horn is a low-distortion waveguide provid- ing highly articulate dialogue without coloration associated with conven- tional horn loudspeakers.
The HF-63 includes a driver protection and equalization network to assure reliable operation. DC blocking capacitors protect against DC or low-fre- quency signals that could damage an unprotected driver. Power limiter cir- cuitry protects the driver from over-powering and a response correction filter smoothes the frequency response of the horn/driver combination. Outboard processing is required, however, as the response correction filter is not a crossover.
The HF-63 components come pre-assembled to reduce field assembly time. Three bolts are all that are required to secure the HF-63 to the top of a QSC low frequency enclosure.
Mounting
Refer to the illustration for mounting information. The HF-63 attaches to the top of the LF-3115 or LF-3215 with three 5/16-18 bolts, 0.75” long, with lock washers. This hardware ships installed on the low frequency cabinet. We recommend the use of serviceable thread locking compound when installing the bolts to prevent loosening due to vibration. Aim the horn in the horizon- tal plane (pan) before tightening. Adjust the vertical tilt with the bracket adjustment.
Install in accordance with QSC Audio Product’s instructions and a licensed, professional engineer. Only use attachments, mounts, accessories, or brackets specified by QSC Audio Products, Inc. Refer all servicing to qualified personnel. Ser- vicing 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, cab- inets, 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, profes- sional engineer when any doubt or questions arise regarding a physical equipment installation.
*TD-000149-00*
TD-000170-00 rev.C © Copyright 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
