LF-4315 Specifications (subject to change without notice)

Frequency Range:

32 - 1200 Hertz (-6dB)

28 - 2800 Hertz useable range (-10dB)

Nominal Coverage:

125° horizontal X 60° vertical at 315 Hertz

Maximum Output:

136.0dB SPL calculated peak, 1 meter, half space, at rated rms power with 6 dB crest factor pink noise input, 35 - 1000 Hertz.

 

130.0dBA SPL calculated maximum continuous, 1 meter. The dBA scale is typically used to identify sound sources

 

which can cause permanent hearing loss.

Impedance:

5.5 ohms nominal

4.5ohms minimum, 150 Hertz 30 ohms maximum, 22 Hertz

Maximum Input Power: 1200 watts rms (8 hours of 6dB crest factor pink noise, 40 - 400 Hertz) 1500 watts rms (2 hours of 6dB crest factor pink noise, 40 - 400 Hertz)

recommended amplifier power capability- 2400 watts rms maximum into 4 ohms (per LF-4315)

Sensitivity:

99.0dB half space, 98.0dB full space, 35 - 1000 Hertz, 1 watt, 1 meter

Recommended Processing:

Subsonic filter below 25 Hertz, >18 dB per octave, maximum recommended crossover frequency is 500 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:

Three 15” (381mm) high efficiency low frequency transducer featuring vented 4” (100mm) copper voice coil on Kap-

 

ton® formers. High excursion/low distortion design, with extremely high power handling, and low thermal compres-

 

sion.

Enclosure:

Quasi B4 alignment, ported enclosure with fully flared ports, low turbulence symmetrical port design, tuned to 34

 

Hertz, constructed of medium density fiberboard and heavily braced. Features vandal resistant woofer mounting bolts.

Size:

30” wide X 53” high X 20” deep (762mm X 1321mm X 508mm)

Weight:

290 lbs. shipping, 260 lbs. net (132/118 kg.)

SPL and Impedance vs. Frequency

 

SPL 2pi

Impedance (ohms)

SPL (dB)

SPL 4pi

 

 

 

Impedance

Frequency (Hertz)

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QSC Audio LF-4315 Which can cause permanent hearing loss, Impedance Ohms nominal, Request, Connectors, Allel Output, Sion

LF-4315 specifications

The QSC Audio LF-4315 is a powerful and versatile loudspeaker designed for professional audio applications. Ideal for live sound reinforcement, it is particularly well-suited for music venues, theaters, and outdoor events where deep, impactful bass is essential. This model stands out due to its engineered design and advanced technology, ensuring superior performance in various settings.

A notable feature of the LF-4315 is its dual 15-inch low-frequency drivers. These drivers are designed to deliver exceptional bass response and handling, further enhanced by a robust enclosure that minimizes distortion. The LF-4315 promotes efficient sound dispersion, allowing it to fill larger spaces with a rich, full-bodied sound. This is crucial in live environments where maintaining clarity and power across the frequency spectrum is vital.

The LF-4315 utilizes advanced construction materials, contributing to its durability and longevity. The cabinet is made from high-quality plywood, which not only reduces weight for easier transport but also enhances acoustic performance. Additionally, the rugged exterior ensures it can withstand the rigors of touring or installation in various venues.

One of the standout technologies in the LF-4315 is its precision-engineered porting system. This design reduces turbulence and improves airflow, leading to a more efficient bass response. The result is a clean, punchy low end that complements the rest of the audio spectrum without overwhelming it.

Flexibility is key with the LF-4315, as it is designed for both single and dual-use configurations. It can be easily integrated into existing sound systems or used in conjunction with other QSC products to create a comprehensive audio setup. This versatility makes it a popular choice among sound engineers and venue operators alike.

In terms of connectivity, the LF-4315 features standard audio connections that ensure compatibility with a wide range of amplifiers and processors. This ease of integration further solidifies its status as a go-to option for professionals looking to achieve exceptional sound quality without compromising on reliability.

The QSC Audio LF-4315 is a remarkable loudspeaker that combines advanced engineering with practical design. Its main features include dual 15-inch drivers, high-quality cabinet construction, and a sophisticated porting system, all of which contribute to its powerful performance in live sound environments. Whether for a permanent installation or a mobile sound setup, the LF-4315 demonstrates QSC's commitment to delivering unparalleled audio quality.