4-Way Screen Channel Loudspeaker, Tri- or Quad-amp
Four-way selectable, tri or quad- amplified screen channel system
Unique HF/VHF diaphragm has less mass than traditional diaphragms resulting in exceptional dynamic range, extended high frequency response and lower distortion
LF-4315 is constructed of MDF and is heavily braced
Low-distortion waveguides provide highly articulate dialogue
Shallow depth (20") facilitates installation
SPECIFICATIONS
SC-434
Nominal Coverage
90° horizontal by +20 to -30° vertical
Frequency Range (-6 dB)
33 Hz–20 kHz
Active Crossover Frequencies
250, 1700, and 6000 Hz, 24 dB per octave
LF-4315
MHV-1090
Impedance
5.5 ohms
MF: 8 ohms HF: 8 ohms VHF: 8 ohms
Sensitivity 1 watt/1 meter, half space
99.5 dB
Tri-amp MF:105 dB HF/VHF: 110 dB
Quad-amp MF: 105 dB HF: 110 dB VHF: 110 dB
Maximum Input Power 1
8 hours of 6 dB crest factor IEC 268 noise spectrum
1200 watts RMS
2 hours of 6 dB crest factor pink noise, 50 Hz - 20 kHz, AES method
1500 watts continuous
MF: 275 W continuous HF/VHF: 200 W continuous
MF: 275 W continuous HF: 100 W continuous VHF: 100 W continuous
Recommended Amplifier Power
2400 watts continuousmaximum
MF: 800 W continuous HF: 500 W continuous VHF: 300 W continuous maximum
Recommended Processing
Subsonic filter below 30 Hz, >18 dB per octave
4th order LR crossover at 280, 1700, and 6000 Hz via QSC DCM, DCP or QSControl.net
Connectors
Barrier strip screw terminals accept up to #10 AWG stranded wire
Barrier strip screw terminals accept up to #10 AWG stranded wire
Transducers
Three 15" (381 mm) high efficiency, extended bass woofer featuring a 4" copper voice coils
MF: 10" high-effeciency, horn-loaded cone with pahse plug HF/VHF: coaxial neodymium compression driver with 3.5" (90 mm) HF diaphram and 1.75" (44 mm) VHF diaphram
Enclosure
Quasi B4 alignment, ported enclosure with fully flared ports, symmetrical port design, tuned to 36 Hz, constructed of MDF and heavily braced. Features vandal resistant woofer mounting bolts
Tilt/Pan Bracket ± 10° vertical tilt ± 10° horizontal pan
Features
4-Way Screen Channel Loudspeaker, Tri- or Quad-amp
SPECIFICATIONS
SC-434
Nominal Coverage
90° horizontal by +20 to -30° vertical
Frequency Range (-6 dB)
33 Hz–20 kHz
Active Crossover Frequencies
250, 1700, and 6000 Hz, 24 dB per octave
LF-4315
MHV-1090
Impedance
5.5 ohms
MF: 8 ohms
HF: 8 ohms
VHF: 8 ohms
Sensitivity 1 watt/1 meter, half space
99.5 dB
Tri-amp
MF:105 dB
HF/VHF: 110 dB
Quad-amp
MF: 105 dB
HF: 110 dB
VHF: 110 dB
Maximum Input Power 1
8 hours of 6 dB crest factor
IEC 268 noise spectrum
1200 watts RMS
2 hours of 6 dB crest factor pink
noise, 50 Hz - 20 kHz, AES method
1500 watts continuous
MF: 275 W continuous
HF/VHF: 200 W continuous
MF: 275 W continuous
HF: 100 W continuous
VHF: 100 W continuous
Recommended Amplifier Power
2400 watts continuousmaximum
MF: 800 W continuous
HF: 500 W continuous
VHF: 300 W continuous maximum
Recommended Processing
Subsonic filter below 30 Hz, >18 dB per octave
4th order LR crossover at 280, 1700, and
6000 Hz via QSC DCM, DCP or QSControl.net
Connectors
Barrier strip screw terminals accept up to #10 AWG stranded wire
Barrier strip screw terminals accept up to #10 AWG stranded wire
Transducers
Three 15" (381 mm) high efficiency, extended bass woofer featuring a 4" copper voice coils
MF: 10" high-effeciency, horn-loaded cone with pahse plug
HF/VHF: coaxial neodymium compression driver with 3.5" (90 mm) HF diaphram and 1.75" (44 mm) VHF diaphram
Enclosure
Quasi B4 alignment, ported enclosure with fully flared ports, symmetrical port design, tuned to 36 Hz, constructed of MDF and heavily braced. Features vandal resistant woofer mounting bolts
Tilt/Pan Bracket
± 10° vertical tilt
± 10° horizontal pan
Dimensions (HWD) inches
53 × 30 × 20.3
39 × 30 × 20
Dimensions (HWD) mm
762 x 1344 x 516
762 x 990 x 508
Net Weight
260 lb (118 kg)
84 lb (38.5 kg)
System Weight
344 lb (155.5 kg)
Baffle Cut-Out
93" × 32"
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