The extremely compact size of the QSC K8 8" powered loudspeaker won't intrude on audience sightlines. Its 105 degrees wide dispersion is a major advantage when the audience is up close to the loudspeaker. Low frequencies extend to 61Hz (-10dB) and the unit outputs an amazing 127dB.
QSC's K8 speaker features a 1-3/4" HF device in its 2-way enclosure. The primary differentiator is the resulting output dispersion--the K8 being the widest at 105 degrees and the K12 the narrowest at 75 degrees. This radical approach is achievable due to a process called Directivity Matched Transition (DMT). DMT allows QSC to take advantage of a fundamental law of acoustics: smaller diameter woofers have wider coverage patterns than larger ones. The K Series matches the HF device to the LF dispersion, allowing for the smoothest and flattest frequency response possible across the entire sound field.
Add to this advanced DSP processing and an enclosure molded from ABS--a material far more rugged and sonically pleasing than conventional plastics--and the QSC K8 Speaker delivers exceptional performance in this category of loudspeakers.
Several proprietary QSC DSP technologies are incorporated into the K8 PA speaker. One such technology is Digital Extension and Excursion Processing (DEEP). DEEP allows the K8 to deliver levels of low-frequency extension previously impossible in enclosures of this size. Intrinsic Correction, first featured in QSC line-array technology, use dozens of spatially averaged measurements mapped to the processor to deliver smooth and accurate reproduction across the entire sound field.
Preventing amplifier clipping or overload is QSC's proprietary GuardRail technology. GuardRail closely monitors the input voltage and controls the amplifier output stage before the onset of clipping. Unlike typical clip limiters, 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 subwoofer settings (EXTSUB, VOCAL, or FLAT response).
The K8 speaker boasts other user-friendly features. For example, when the PA speaker is pole-mounted, the Tilt-Direct pole socket converts to a 7.5 degrees down-tilt with a simple 180 degrees rotation of the dial. A locking IEC power cord is included, preventing accidental disconnect during a performance. For installed applications, connecting a commonly available potentiometer to the unit's Euroblock connector allows the operator to have gain control from a remote location. Multiple K Series units can be daisy-chained together to one centralized control. Additionally, the QSC K8 Speaker enters Standby mode after 5 minutes of inactivity, conserving power. The entire PA package is housed in rugged and sonically friendly ABS (the sub in birch plywood) with steel grilles and carry-friendly ergonomic aluminum handles.
Processing, Connectivity & Monitoring
The brain of the system is its expansive digital signal processing. While the DSP functions are optimized using Intrinsic Correction, DEEP, DMT and GuardRail technologies (with the high-pass filter included for use with subwoofer systems), two XLR-combi inputs, each with its own Level control, are provided. Both accommodate line-level inputs and one may be switched to microphone level sensitivity. Phono (RCA) input jacks are also included for connection of consumer electronics sources. Dual XLR outputs are provided for dual "loop-thru" XLR/M connectors and a single XLR jack is available as a summed output. All 3 input sources may be used at once and mixed via the 2 Gain control knobs.
Input Panel LED indicators are provided for Power, Signal Present, Mic Level Sensitivity and Limit annunciation. A front-mounted power LED may be disabled by means of a rear panel switch when desired or set so it indicates when the limit circuitry has been engaged.
Waveguide
Each QSC K8 model incorporates a conical waveguide that maintains pattern control all the way down to the crossover frequency. The coverage angles of the waveguides are tailored for a smooth transition from woofer to compression driver with far less "waistbanding" or other directivity related anomalies than other products in this class.
Suspension and Mounting
The K-Series 2-way PA speaker may be pole-mounted, suspended, or yoke-mounted. The K8 yoke accessory kit (not included) allows for either horizontal or vertical yoke mounting, providing a flexible means of attaching The K-Series loudspeakers to a building structure or truss. When suspended deployment is required, M10 threaded inserts support vertical or horizontal suspension, while the integral pole mount socket accommodates 35mm speaker poles for use on a speaker stand or over a sub. The pole socket is designed so that the speaker may be angled down 7.5 degrees in order to cover the audience while keeping acoustic energy off reflective walls and ceilings.
FEATURES:
- 1,000 watt, efficient and lightweight class-D power module
- Lightweight (27 lb.)
- Professional appearance and rugged construction
- Directivity Matched Transition (DMT) and Intrinsic Correction DSP tuning for accurate, undistorted performance across the entire sound field
- GuardRail technology discreetly protects the system from damaging overload
- DEEP mode for enhanced low-frequency extension without a subwoofer
- Locking IEC power cable
- XLR and 1/4" connectors
- Phone Mic/Line and Line inputs with Loop-thru connectors and independent level controls.
- Phono (RCA) inputs
- Three 2-way models--each with coverage pattern optimized to match the LF driver
- Front mounted LED may be switched off or indicate "LIMIT" or AC Power On
- Dual angle, 35 mm pole socket with Tilt-Direct allows the speaker to be angled down to put the energy on the audience instead of the back wall
- 1-3/4" voice-coil compression driver
- High Pass Filter for use with subwoofers
- 1,000 watt subwoofer, efficient and light-weight Class D power module
- Threaded pole socket for solid, secure pole mounting
SPECIFICATIONS:
• Amplifier Power: 1000W Class D
• Transducers: 8" LF, 1-3/4" HF
• Coverage Pattern: 105 Degrees conical
• Frequency Response: 61Hz - 20kHz
• Max SPL: 127dB
• Operating Voltage: 85 - 275 VAC @ 50 - 60Hz
• Unit Dimensions: 11" W x 17-7/10" H x 10-3/5" D
• Weight: 27 lb.
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