LF-3215 Specifications (subject to change without notice)

Frequency Range:

32 - 1500 Hertz (-6dB)

 

28 - 3300 Hertz useable range (-10dB)

Nominal Coverage:

100° horizontal X 55° vertical at 600 Hertz

Maximum Output:

132.5 dB SPL calculated peak, 1 meter, half space, at rated rms power with 6 dB crest factor pink noise input, 25 - 250 Hertz.

 

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

 

which can cause permanent hearing loss.

Impedance:

4 ohms nominal

 

4.1 ohms minimum, 180 Hertz

 

55 ohms maximum, 21 Hertz

Maximum Input Power:

600 watts rms (8 hours of 6 dB crest factor pink noise, 40 - 400 Hertz)

 

750 watts rms (2 hours of 6 dB crest factor pink noise, 40 - 400 Hertz)

 

Recommended amplifier power capability- 1200 watts rms maximum into 4 ohms (per LF-3215)

Sensitivity:

98.5 dB half space, 97.5 dB 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 stranded wire. Four terminals: (two INPUT and two PARALLEL

 

OUT). Transducers are internally wired in parallel. For independent transducer connection, remove blue jumper wire

 

and yellow jumper wire on internal-side of terminal cup and mark enclosure accordingly.

Transducers:

Two 15” (381mm) high efficiency low frequency transducers featuring vented 3” (76mm) copper voice coils on Kapton®

 

formers. High excursion/low distortion design, with extremely high power handling, and low thermal and port com-

 

pression.

Enclosure:

Size:

Weight:

SPL (dB)

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 35” high X 20” deep (762 mm X 889 mm X 508 mm)

195 lbs. shipping, 172 lbs. net (88/78 kg.)

SPL and Impedance vs. Frequency

SPL 2pi

SPL 4pi

Impedance (ohms)

Impedance

Frequency (Hertz)

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QSC Audio SC-322X Maximum Output, Enclosure Size Weight SPL dB, SPL and Impedance vs. Frequency SPL 2pi SPL 4pi

SC-322X specifications

The QSC Audio SC-322X is a high-performance loudspeaker designed to deliver exceptional sound quality and reliability for a range of applications, including live performances, installations, and corporate events. Renowned for its versatility and consistent audio performance, the SC-322X is an ideal choice for sound professionals seeking powerful and clear sound reproduction.

One of the standout features of the SC-322X is its advanced two-way design, which includes a dual 12-inch cone woofer and a powerful 1.75-inch titanium diaphragm compression driver. This combination delivers impressive low-frequency response down to 45 Hz, ensuring that deep bass notes are rendered with precision and clarity. The system's crossover technology allows for seamless integration between the woofer and tweeter, resulting in a balanced sound across the frequency spectrum.

The SC-322X also incorporates QSC’s proprietary DMT (Directivity Matched Transition) technology. This innovative design allows for consistent coverage throughout the listening area while minimizing distortion and maintaining a well-defined sound stage. Users can expect excellent sound quality regardless of their position in the venue, making the SC-322X a reliable choice for a variety of setups.

Durability and reliability are hallmarks of the SC-322X. The enclosure is constructed from premium-grade plywood, offering robustness suitable for both touring and permanent installations. Its rugged exterior is enhanced with a durable powder-coated finish and a dense foam grille, protecting the internal components while maintaining an elegant appearance.

In terms of connectivity, the SC-322X features a variety of input options, making it highly adaptable to different audio systems. The loudspeaker is equipped with Neutrik Speakon inputs, ensuring secure connections and minimizing signal loss. Additionally, the integrated pole mount socket makes it easy to position the speaker for optimal sound projection, whether on the ground or elevated.

For sound professionals seeking a portable loudspeaker that does not compromise on performance, the QSC Audio SC-322X is a top-tier option. Its combination of cutting-edge technology, sturdy construction, and exceptional sound quality makes it suitable for demanding environments, whether in a concert hall, theater, or corporate venue. The SC-322X represents a significant investment in audio fidelity and reliability, positioned as a powerful tool in any audio engineer's arsenal.