QSC LF-4115 User Manual page 3

LF-4115 Specifications
Frequency Range:
Nominal Coverage:
Maximum Output:
Impedance:
Maximum Input Power:
Sensitivity:
Recommended Processing:
Connectors:
Transducers:
Enclosure:
Size:
Weight:
(subject to change without notice)
33 - 1200 Hertz (-6dB)
29 - 3000 Hertz useable range (-10dB)
100° horizontal X 100° vertical at 1000 Hertz
127.0dB SPL calculated peak, 1 meter, half space, at rated rms power with 6 dB crest factor pink noise input, 35 - 1000 Hertz.
121.0dBA SPL calculated maximum continuous, 1 meter. The dBA scale is typically used to identify sound sources
which can cause permanent hearing loss.
4 ohms nominal
4.3 ohms minimum, 160 Hertz
40 ohms maximum, 22 Hertz
400 watts rms (8 hours of 6dB crest factor pink noise, 40 - 400 Hertz)
600 watts rms (2 hours of 6dB crest factor pink noise, 40 - 400 Hertz)
recommended amplifier power capability- 1100 watts rms maximum into 4 ohms (per LF-4115)
93.5dB half space, 92.0dB full space, 35 - 1000 Hertz, 1 watt, 1 meter
Subsonic filter below 30 Hertz, >18 dB per octave, maximum recommended crossover frequency is 1000 Hertz. QSC
DSP configurations are available at www.qscaudio.com. Parameters for alternative processing hardware are available
upon request.
Barrier strip screw terminals accept up to #10 AWG (5.3mm
allel OUTPUT).
15" (381mm) high efficiency low frequency transducer featuring vented 4" (100mm) copper voice coil on Kapton®
formers. High excursion/low distortion design, with extremely high power handling, and low thermal and port com-
pression.
Quasi B4 alignment, ported enclosure with fully flared ports, low turbulence symmetrical port design, tuned to 36
Hertz, constructed of medium density fibreboard and heavily braced. Features vandal resistant woofer mounting bolts.
30" wide X 18" high X 20" deep (762mm X 457mm X 508mm)
96 lbs. shipping, 83 lbs. net (44/38 kg.)
SPL and Impedance vs. Frequency
SPL 2pi
SPL 4pi
Impedance
Frequency (Hertz)
2
) stranded wire. Four terminals: (two INPUT and two par-