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QSC SC28 System Controller

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Housing preset tunings designed to optimize the performance of QSC loudspeakers, the new SC28 System Controller facilitates quick and easy system setup. A two input, eight output DSP device, the controller additionally offers user-adjustable EQ and delay.

The SC28 is rooted in 48 kHz, 24-bit A/D and D/A conversion technology with 32-bit, floating-point DSP offering wide dynamic range and low distortion. Balanced, line-level, analog XLR connectors are provided at all inputs and outputs, while all DSP tunings incorporate IIR (Infinite Impulse Response) as well as FIR (Finite Impulse Response) filtering.

As used within the SC28's circuitry, FIR filtering offers what QSC system engineers refer to as “intrinsic correction” of loudspeakers used with the device. Providing a drive signal to the amplifiers and loudspeakers with the most accurate acoustical magnitude, frequency, and phase domain performance possible, FIR filtering and its intrinsic correction compensates for inherent transducer and waveguide magnitude and time-based response anomalies. Arrays of loudspeakers operating with intrinsic correction tunings are additionally quite responsive to the use of equalization to compensate for array configuration, acoustical conditions, and individual user preferences.

System tunings can be selected by scrolling through a list of QSC loudspeakers found on the SC28's front LCD panel and selecting the desired configuration (two-way, three-way, etc.). A nearly identical process is used to select the QSC amps being used, as well as each amplifier's input sensitivity. To accommodate future QSC products, new tunings can be loaded into the SC28 via a USB port found on its rear panel.

Once the SC28 has been configured to match a system, integral six-band parametric equalization can be added along with high and low shelving filters and signal delay. Fully password protected to thwart unauthorized tampering, the SC28 also provides thermal and excursion loudspeaker protection, as well as a channel-linking feature that can be used to select linked or independent control of stereo channel settings.

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For information, please visit www.qscaudio.com