QSC SC-413C Handleiding

QSC Speaker SC-413C

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EN
ES
FR
DE
CH
20” (508 mm)
39”
(991 mm)
30” (762 mm)
Cinema Mid-High Loudspeaker System User Manual
MH-1075C 10” (254mm) mid, 3.0” (75mm) compression driver
Introduction
The MH-1075C “mid-high pack” provides the mid and high frequency components of
three-way screen channel loudspeaker systems for high performance cinema applica-
tions. They were designed to operate with and be directly mounted on QSC’s cinema
low-frequency enclosures.
Mid frequencies are reproduced with a 10” (254mm) high-efficiency, phase-ring
loaded driver mounted on a custom designed cinema horn. The high-frequency driver
is a large format, 3.0” (75mm) titanium diaphragm compression driver mounted on a
custom high-frequency cinema horn. The high frequency horn is a low-distortion
waveguide providing highly articulate dialogue without coloration associated with con-
ventional horn loudspeakers. Both horns feature broad horizontal and vertical cover-
age angles to ensure coverage of every seat in the auditorium. The driver assemblies
are mounted on an adjustable pan and tilt bracket that has an integral aiming sight,
simplifying installation.
The MH-1075C loudspeaker includes a driver protection and crossover network to
assure reliable operation. DC blocking capacitors protect against DC or low-frequency
signals that could damage an unprotected driver. Power limiter circuitry protects the
driver from over-powering and an 18dB/octave crossover seamlessly blends the high
and mid frequency elements. Outboard processing is required to form the crossover
between the LF and MH loudspeakers.
Bi-amp or tri-amp operation is possible using a selector switch mounted on the con-
nections panel. The bi-amp setting provides a passive crossover network between
mid and high drivers. Separate amplifiers and an active crossover are required for the
low frequency channel and the mid-high channel. Tri-amp setting disables the internal
mid-high crossover and each driver is driven independently by its own amplifier and
active crossover; one for the low, one for the mid, and one for the high frequencies.
The MH-1075C components come pre-assembled to reduce field assembly time.
Three bolts are all that are required to secure the mid-high assembly to the top of a
QSC low-frequency enclosure.
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, LLC Refer all servicing to quali-
fied 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 installation.
TD
-
000352
-
00
-
A
© Copyright 2012, QSC Audio Products, LLC
QSC® is a registered trademark of QSC Audio Products, LLC
“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
*TD 00*-000352-
2
EN
Settings
BI-AMP / TRI-AMP Operating Mode Selection
Set the operating mode selector switch to BI-AMP or TRI-AMP, depending on your application setup.
Mounting
Attaching to Low Frequency Enclosure
The mid-high loudspeaker assembly attaches to the top of the QSC low frequency cabinet with three M8 bolts, 20mm 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. Do not fully tighten the mounting hardware before aiming (see below).
Aiming
Aim the horn in the horizontal plane (pan) before tightening the attachment hardware. Adjust the vertical tilt with the mid-high vertical
adjustment bracket. The mid-high assembly is equipped with an aiming sight to assist in achieving desired coverage quickly and easily.
For typical applications, the aim point should be the center seat in the back row of the auditorium. If the cinema screen has already
been installed, a flashlight placed at the desired aiming point een perforations in a darkened audi can be seen through the scr torium.
Where the sight holes are located: How to use the sights:
Aim point:
BI BI-AMP-When set to -AMP, the MH-1075C accepts mid-high frequency
signals on one set of inputs and uses an internal crossover network
between the mid- and high-frequency drivers. The signal applied to the
mid-high loudspeaker assembly must not contain low-frequency content
(below 200 Hz).
TRI TRI-AMP- When set to -AMP, the MH-1075C accepts separate mid-
and high-frequency signals on two sets of inputs. The internal crossover
network is bypassed and only the protective circuitry for the H.F. driver
remains. Each of the driver’s signals must have the appropriate signal pro-
cessing before operating.
Do not connect amplifiers directly to the driver inputs! Always
use the input terminal strip.
EN
3
LF-Series Cabinet
MH-1075C
DCM
DCA
CH2 CH1
Mid-High
Program
Low
Frequency
Program
Connections
INPUT Terminals
The MH-1075C has barrier strip screw terminals that accept up to #10 AWG (6mm 2) stranded loudspeaker wire. Observe proper polar-
ity. Use the largest wire size and shortest wire length for the application.
OUTPUT Terminals
The OUTPUT terminals are factory-connected to the drivers. These terminals should ONLY be connected to their respective driver. Do
not connect signals to these terminals as all pr uitry will be bypassed.otection and equalization circ
NOTE! Maintain proper loudspeaker connection polarity throughout the entire system for maximum performance. Do not
apply full range signal to the MH
-
1075C! There is a mid
-
high passive crossover for bi
-
amp mode only. There is no crossover
connected when operating in tri
-
amp mode. A protection network is always active. All required signal processing must be
done before the signal is applied to the loudspeaker. Do not connect any signal to the upper sets of OUTPUT terminals.
BI-AMP mode connections- Ensure the mode switch is set to BI AMP- , connect the input to the MH-1075C to the lower set of input ter-
minals marked “BI-AMP + -”.
BI-AMP Mode- one amplifier
channel is used for the low
frequency cabinet and one
amplifier channel for the
mid-high assembly.
The MH-1075C mode switch
is set to BI-AMP. Active
crossovers are used before
amplification. The mid-high
assembly provides a passive
crossover between the mid
and high frequency drivers.

Product specificaties

Merk: QSC
Categorie: Speaker
Model: SC-413C

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