QSC Audio SF-3 manual General Information, Connectors, General Audio

Models: SF-3

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S F - 3 S P E C I F I C AT I O N S

S F -3

GENERAL INFORMATION

 

Supply Voltage (no load)

+15 volts provided by amplifier, -15 volts provided by internal charge-pump converter.

Supply Current Requirements

Less than 50 mA

Operating Temperature

0–70oC

Input type, each channel

Electronically balanced differential

Input impedance

22.6 kbalanced; 11.3 kunbalanced

CONTROLS (each channel)

 

Subsonic filter frequency

Selectable using SIP resistor networks: 20, 25, 30, 35, 40 & 50 Hz

Subsonic fitler Q

Selectable using DIP switch: 0.707 (Butterworkth) or 2 (6 dB peak)

Low-pass filter

Bypass or engage using DIP switch

Low-pass filter frequency

Selectable using SIP resistor networks: 80, 150 & 250 Hz

Gain adjustment

Trim potentiometer 0–20 dB attenuation

CONNECTORS

 

Input

Two female 3-pin XLR

Output to amplifier

Male HD-15 connector to amplifier DataPort

Accessory’s operating power

Male HD-15 connector to amplifier DataPort

GENERAL AUDIO

 

Input stage type

Electronically balanced differential; both inputs summed

Output stage type

Balanced

Dynamic range

118 dB nominal

Total harmonic distortion

Less than 0.1%

Signal to noise ratio

Min. 103 dB

Subsonic filter type

2nd-order, 12 dB/octave

Low-pass filter type

4th-order Linkwitz-Riley alignment; -6 dB at crossover frequency

Low-pass roll-off slope

24 dB/octave rolloff

 

 

5.1

Cinema

Processor

 

 

DCA

 

 

 

 

1

Left

 

 

XC-3

 

 

L

 

MF

 

2

Left

 

C

 

HF

DCA

 

 

R

 

 

 

1

LS

 

 

LF-3

 

RS

 

 

2

 

DCA

 

Sub

 

 

 

 

1

 

 

 

 

Center

 

 

XC-3

 

 

 

 

MF

 

 

2

Center

 

 

 

HF

DCA

 

 

 

 

 

 

 

 

 

 

 

1

 

 

 

LF-3

2

 

 

DCA

 

 

 

 

 

 

 

1

Right

 

 

XC-3

 

 

 

 

MF

 

 

2

Right

 

 

 

HF

DCA

 

 

 

 

 

 

 

 

 

 

 

1

 

 

 

SF-3

2

 

 

DCA

 

 

 

 

 

 

 

1

Left

 

 

 

 

 

 

 

 

Surround

 

 

 

2

Right

 

 

 

Surround

 

 

 

 

 

Left

LF

Center

LF

Right

LF

Spare

Sub

Sub

Audio* in Channel 1

Audio* in Channel 2

SF filtering

Level trim

0…-20 dB

*Either full-range (for derived subwoofer program)

or discrete subwoofer program

DataPort

SF out Channel 1

SF out Channel 2

QSC Audio Inc. 1675 MacArthur Boulevard Costa Mesa, CA 92626 Ph: 800/854-4079 or 714/957-7100 Fax: 714/754-6174www.qscaudio.com

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QSC Audio SF-3 manual General Information, Connectors, General Audio

SF-3 specifications

QSC Audio SF-3 is a premium loudspeaker designed to deliver superior sound performance in a variety of professional audio settings. Renowned for its versatility, the SF-3 is ideal for applications such as live sound, installations, and events where audio clarity and reliability are paramount.

One of the standout features of the SF-3 is its built-in advanced DSP technology. Digital Signal Processing allows for real-time audio adjustments, ensuring optimal performance regardless of the environment. The DSP provides precise control over EQ, crossover settings, and limiting, allowing users to tailor the sound to their specific needs. This technology plays a crucial role in maximizing the loudspeaker's efficiency and extension across frequencies.

The SF-3 utilizes a robust, high-performance transducer system. With a 10-inch low-frequency driver complemented by a 1.4-inch titanium diaphragm compression driver, the loudspeaker offers a remarkable frequency response. This configuration ensures powerful bass performance combined with smooth high-frequency reproduction, resulting in a balanced overall sound signature. The speaker's ability to produce high SPL (Sound Pressure Levels) makes it suitable for large venues or outdoor events where volume and clarity must be maintained.

Durability and build quality are also significant characteristics of the SF-3. The enclosure is constructed from high-quality materials designed to withstand the rigors of touring and frequent transport. The cabinet's design not only enhances its aesthetic appeal but also contributes to its acoustic performance by minimizing cabinet resonance.

In terms of connectivity, the QSC SF-3 features a range of input options, including XLR/TRS combo jacks, making it compatible with various audio sources. This flexibility enables seamless integration with different sound systems while maintaining signal integrity. Additionally, the loudspeaker can be mounted in various configurations and has rigging options to accommodate multiple deployment scenarios.

Overall, the QSC Audio SF-3 loudspeaker stands out as a compelling choice for audio professionals seeking a combination of power, clarity, and versatility. Its sophisticated DSP capabilities, robust transducer system, and durable design make it an excellent option for any setting that requires exceptional audio performance, whether in live music venues, corporate events, or permanent installations. With the SF-3, QSC continues to uphold its reputation for excellence in audio technology, catering to the needs of sound engineers and artists alike.