LF-3115 Specifications (subject to change without notice)

Frequency Range:

33 - 1900 Hertz (-6dB)

30 - 3200 Hertz useable range (-10dB)

Nominal Coverage:

100° horizontal X 100° vertical at 1000 Hertz

Maximum Output:

126.5dB SPL calculated peak, 1 meter, half space, at rated rms power with 6 dB crest factor pink noise input, 35 - 1000 Hertz.

 

120.5dBA SPL calculated maximum continuous, 1 meter. The dBA scale is typically used to identify sound sources

 

which can cause permanent hearing loss.

Impedance:

8 ohms nominal

8 ohms minimum, 160 Hertz

90 ohms maximum, 22 Hertz

Maximum Input Power: 300 watts rms (8 hours of 6dB crest factor pink noise, 40 - 400 Hertz) 375 watts rms (2 hours of 6dB crest factor pink noise, 40 - 400 Hertz)

Recommended amplifier power capability- 600 watts rms maximum into 8 ohms (per LF-3115)

Sensitivity:

95.5dB half space, 94.0dB full space, 35 - 1000 Hertz, 1 watt, 1 meter

Recommended Processing:

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.

Connectors:

Barrier strip screw terminals accept up to #10 AWG (5.3mm2) stranded wire. Four terminals: (two INPUT and two par-

 

allel OUTPUT).

Transducers:

15” (381mm) high efficiency low frequency transducer featuring vented 3” (76mm) copper voice coil on Kapton® form-

 

ers. High excursion/low distortion design, with extremely high power handling, and low thermal and port compression.

Enclosure:

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.

Size:

30” wide X 18” high X 20” deep (762mm X 457mm X 508mm)

Weight:

96 lbs. shipping, 83 lbs. net (44/38 kg.)

SPL and Impedance vs. Frequency

 

SPL 2pi

 

SPL 4pi

SPL (dB)

Impedance(ohms)

 

Impedance

Frequency (Hertz)

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QSC Audio Cinema Low Frequency Loudspeaker Which can cause permanent hearing loss, Impedance Ohms nominal, Upon request

Cinema Low Frequency Loudspeaker, LF-3115 specifications

The QSC Audio HF-63X1 and LF-3115 are advanced loudspeakers that exemplify the cutting-edge technology and engineering prowess synonymous with QSC. Known for their exceptional performance and reliability, both models are designed to cater to professional audio applications, including live sound, installations, and events.

The HF-63X1, a high-frequency loudspeaker, features a revolutionary 1.4-inch titanium diaphragm compression driver that allows for exceptional clarity and detail in high-frequency reproduction. This model offers a frequency response ranging from 1 kHz to 20 kHz, ensuring that even the most intricate vocal nuances are delivered with precision. The innovative waveguide design aids in creating a smooth dispersion pattern, enhancing coverage across wide areas while minimizing feedback and distortion.

On the other hand, the LF-3115 is a powerful low-frequency transducer. It utilizes an impressive 15-inch driver to produce deep, impactful bass responses crucial for dynamic live sound reinforcement. With a frequency response extending from 35 Hz to 1 kHz, the LF-3115 is engineered to handle the most demanding bass-heavy applications. Its robust construction and high-power handling capacity lend durability, ensuring consistent performance in various environments.

Both models can be integrated seamlessly into QSC’s DXS and KW series, thanks to their compatibility with QSC’s proprietary DSP (Digital Signal Processing) technology. This allows users to fine-tune the sound to their specific environment and requirements. The built-in limiting features protect the loudspeakers from damage while ensuring optimal performance.

In addition to their impressive sound characteristics, the HF-63X1 and LF-3115 are designed with ease of use in mind. Their lightweight construction and ergonomic design make them easy to transport and install. The robust enclosures are crafted from high-quality materials that reduce resonance and vibration, enhancing sound clarity and reducing unwanted coloration.

In conclusion, the QSC Audio HF-63X1 and LF-3115 loudspeakers stand out as remarkable options for audio professionals seeking high-quality sound reinforcement. Their innovative technologies, robust construction, and exceptional performance make them ideal choices for any live sound environment or permanent installation scenario. Whether you are mixing at a concert or providing sound for a corporate event, these models deliver reliability and auditory excellence that professionals demand.