LED Indicators

LED metering of both input and output are provided. Input metering is indicated as relative to 0 dBfs (digital clipping of the input signal) and output metering is indi- cated in actual output voltage levels in dBu. Meters are peak-reading and updated every 50 milliseconds.

The lower input metering LEDs will remain illuminated as successively higher levels are indicated. When 0 dbfs is reached, ONLY the upper red LED will illuminate (lower LEDs will extinguish). If 0 dBfs is indicated often, reduce input signal level to the SC28. This will reduce possibly audible distortion caused by clipping the digital input of the SC28.

The output meters indicate the actual output voltage level in dBu (0dBu=0.775Vrms). Most QSC amplifiers clip/limit at about +4 dBu input level.

LCD Display and Control (Rotary Encoder)

The SC28 has a 2 line X 16 character LCD display. The display and the push-to-select rotary encoder knob pro- vide data access and editing capability. The rotary select/accept knob is active for most displayed items allowing you to scroll through choices by rotating the control, and accepting choices (entering) by pushing in on the control.

The accessible menus and sub menus may appear dif- ferently than example shown. Software updates may occasionally improve the interface. On the following pages are shown the basic navigation flow for the SC28 menu system; Setup, EQ, Gain, and Utility.

Notes:

When editing parameters such as Gain or Filter Fre- quency, turning the knob more quickly (i.e. “spinning”) will accelerate the parameter’s change.

LCD Icon key:

Loudspeaker protection/clip limiting is active

Turning the knob to the right will increment the current selection

Turning the knob to the left will decrement the current selection

Pressing knob will enter sub-menu or allow the current selection to be edited

Input metering for the SC28- Note digi- tal clipping will be indicated by ONLY the top red LED being illuminated.

Output metering for the SC28- Meters indicate actual voltage level in dBu for each output. +4 dBu is maximum input level for most QSC amplifiers.

LCD display of the SC28- Typical loud- speaker configuration parameters shown.

Control knob (rotary encoder)- Adjust- able parameters can be changed by rotating the knob and accepted/ selected by pushing in on the knob.

SC28 specifications

The QSC Audio SC28 is a powerful and versatile digital signal processor designed to enhance audio performance in various applications, ranging from live sound reinforcement to installed sound systems. Known for its exceptional audio quality and user-friendly interface, the SC28 provides a robust set of features that make it a valuable tool for audio professionals.

At the heart of the SC28 is its advanced processing power, featuring 28 total input and output channels. This includes 16 inputs and 12 outputs, allowing for flexible routing and efficient management of audio signals. Its high-performance 24-bit/96 kHz digital audio processing ensures pristine sound quality, making it suitable for even the most demanding audio environments.

One of the standout features of the SC28 is its comprehensive digital signal processing capabilities. It includes a variety of signal processing tools such as parametric EQ, dynamic range control, crossover filters, delay, and more. Each channel can be customized to meet the specific requirements of the application, empowering audio engineers to tailor the sound to their liking.

The SC28 employs QSC's proprietary Software-controlled DSP, making it easy to configure and control via a user-friendly interface. Real-time monitoring and adjustments can be made through the intuitive software, allowing for quick response times during live performances or installations. This flexibility is crucial for achieving optimal sound quality and performance, especially in challenging acoustic environments.

Moreover, the SC28 integrates seamlessly with QSC's other audio products, such as amplifiers and loudspeakers, forming a complete ecosystem for audio solutions. Its compatibility with networking protocols allows for remote control and monitoring, providing additional convenience and capabilities for sound engineers.

In terms of physical characteristics, the SC28 is designed for durability and ease of use. Its rack-mountable design ensures it fits seamlessly into any audio rig, while the robust construction makes it suitable for touring and permanent installations alike.

In summary, the QSC Audio SC28 is a feature-rich digital signal processor that provides audio professionals with the tools they need to deliver exceptional sound quality. Its advanced processing capabilities, user-friendly controls, and flexibility make it a standout choice for live sound applications and permanent installations. Whether you’re in a concert hall, a corporate event, or a large venue, the SC28 is engineered to enhance audio systems and elevate the listening experience.