QSC SC-413H - Manual

Developed specifically for the unique requirements
of professional motion picture playback, the SC-413H
extends QSC’s commitment to the cinema market. As
a member of the DCS Digital Cinema Speaker Series,
the SC-413H is a three-way, selectable bi or tri-amplified
screen channel loudspeaker system comprised of two
main units—the MH-1075 mid-high frequency system
and the LF-4115 low-frequency system.

The MH-1075 mid-high system features a high
output, horn loaded 10" midrange cone driver and
a 3" (63 mm) titanium diaphragm compression
driver mounted to an adjustable pan and tilt bracket.
The MH-1075 includes a driver protection network
and a passive crossover for bi-amp operation. Power
limiter circuitry protects the high-frequency driver
from overpowering. The MH-1075 provides extended
frequency coverage for the critical midrange band. A
high power 10" cone driver allows operation as low
as 250 Hz and the advanced phase plug coupling
permits a crossover point of up to 1800 Hz to the
high-frequency horn. This ensures that most of the
dialog range is reproduced by a single element for
unmatched intelligibility.

The LF-4115 single 15" (381 mm) low-frequency
enclosure is designed specifically to address the
extended low-frequency response required for cinema
applications. The LF-4115 covers the frequency range
from 35 Hz to 250 Hz.

The SC-413H is designed for ease of installation.
The MH-1075 components come pre-assembled to
reduce field assembly time. Three bolts are all that
are required to secure the MH-1075 to the top of the
LF-4115 enclosure.

SC-413H

Cinema Loudspeaker System

Specifications

SC-413H

Nominal Coverage

90° horizontal x +20 to -30° vertical

Frequency Range

33 - 16 kHz (-6 dB)

Crossover Frequency

250 and 1700 Hz, 24 dB per octave

LF-4115

MH-1075

Impedance

4

Ω

8

Ω

Sensitivity 1 watt /1 meter,

93.5 dB

Bi-amp

Tri-amp

half space

105 dB

MF 105 dB HF 107.5 dB

Maximum Input Power

1

8 hours of 6 db crest factor

400 W RMS

250 W RMS

2

275 W RMS 80 W RMS

IEC 268 noise spectrum

2 hours of 6 db crest factor

500 W RMS

350 W RMS

pink noise, 50 Hz - 20 kHz,

AES method

Recommended Amplifier Power 800 W RMS maximum

800 W RMS maximum

Recommended Processing

Subsonic filter below 30 Hz,

4th order LR crossover at 200 and

> 18 dB per octave

1700 Hz via QSC DCM or QSControl.net

Connectors

Barrier strip screw terminals

Barrier strip screw terminals

accept up to #10 AWG

accept up to #10 AWG stranded wire

stranded wire

Transducers

One 15" (381mm) high efficiency, 10" high efficiency mid range,
extended bass woofer featuring a 1.5" (38mm) exit, 3" titanium
4" copper voice coil

diaphragm compression driver

Enclosure

Quasi B4 alignment, ported

Tilt/Pan Bracket

enclosure with fully flared ports,

±10° vertical tilt

symmetrical port design, tuned to ±10° horizontal pan
36 Hz, constructed of MDF and
heavily braced. Features vandal
resistant woofer mounting bolts

Dimensions (HWD)

18.5" x 30" x 20.3"

39" x 30" x 20"

(470 mm x 762 mm x 516 mm)

(990 mm x 762 mm x 508 mm)

Weight - Net

83 lbs (38 kg)

85 lbs (39 kg)

System Weight

168 lbs (77 kg)

Baffle Cut-Out

58.75" 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.
2) Maximum input power tested in accordance with IEC 268-5 recommendations, 200 Hz - 2 kHz band limiting, 6 dB signal crest factor.

Features

• Three-way selectable, bi or tri-amplified screen channel system

• MH-1075 provides increased high-frequency output

• LF-4115 is constructed of MDF and is heavily braced

• Low-distortion waveguides provide highly articulate dialogue

• Shallow depth (20") facilitates installation

passive

mid-high