QSC Unveils New K Series Loudspeakers

Apr 6, 2009 2:57 PM


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photo of QSC K Series loudspeakers

QSC K Series loudspeakers

QSC in Costa Mesa, Calif., has launched its new K Series product group of compact, lightweight, high-performance powered loudspeakers. The same 1,000-watt Class D amplifier module powers each K Series model: the K8, K10, K12 and KSub dual 12-inch subwoofer.

The K8, K10 and K12 are two-way models with 8-, 10- and 12-inch woofer diameters built around an advanced switch-mode power supply and Class-D output section. The subwoofer power module also delivers 1,000 watts from an efficient and lightweight design.

A process called Directivity Matched Transition (DMT) allows QSC to take advantage of a fundamental law of acoustics: smaller diameter woofers have wider coverage patterns than larger ones. QSC has simply matched the HF device to the LF dispersion, allowing for a smooth and flat frequency response across the entire sound field.

The K Series also uses advanced DSP processing and an enclosure molded from ABS, a material QSC says is far more rugged and sonically pleasing than conventional plastics.

The K Series incorporates several proprietary QSC DSP technologies. Digital Extension and Excursion Processing (DEEP) allows each of the K Series models to deliver levels of low-frequency extension. Intrinsic Correction, first featured in QSC line-array technology, uses dozens of spatially averaged measurements mapped to the processor to deliver smooth and accurate reproduction across the entire sound field.

QSC’s proprietary GuardRail technology is designed to prevent amplifier clipping or overload. GuardRail closely monitors the input voltage and controls the amplifier output stage before the onset of clipping. QSC states, "When GuardRail is activated, the results are all but undetectable— there’s none of the typical ‘pumping’ associated with other methods." In addition, user EQ controls are provided to select between application settings (EXTSUB, VOCAL, or FLAT response).

When speakers are pole-mounted, the Tilt-Direct pole socket converts to a 7.5-degree down-tilt when the user rotates the dial 180 degrees. A locking IEC power cord is included, preventing accidental disconnect during a performance. For installed applications, connecting a commonly available potentiometer to the unit allows the operator to obtain gain control from a remote location. Multiple K Series units can also be daisy-chained together to one centralized control. Additionally, the K Series enters standby mode after five minutes of inactivity, both conserving power and enhancing ease of use.

The entire package is housed in rugged and sonically friendly ABS (the sub is housed in birch plywood) with steel grilles (2-way models) and aluminum handles. The KSub also features low-noise casters for easy transport.

QSC states that the K Series will ship nationwide in mid-May.

For more information, visit QSC's K Series active loudspeakers page.

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