Used QSC KLA Series
Used QSC KLA Series line array systems offer professional-grade acoustic performance in a design built around fast, tool-free deployment, making them a practical choice for touring and installed sound applications. Second-hand KLA Series units combine high-output active line array enclosures and subwoofers with onboard DSP in a compact, lightweight format. Scroll down to browse the used QSC KLA Series listings currently available.
No listings currently in stock. This page stays live — check back or register interest.
0 listed right now — list yours to the buyers searching this model.
Get an email when a new QSC KLA Series is listed.
QSC KLA Series specifications
| Brand | QSC |
| Segment | Audio |
About the QSC KLA Series
The QSC KLA Series redefines the active line array category with a Lift, Click and Play approach that allows deployment in a fraction of the time required by comparable products. The KLA12 features a 500 W plus 500 W power module, a rugged ABS enclosure, a 12-inch low-frequency driver reaching down to 44 Hz, and a 1.75-inch diaphragm compression driver for high-frequency reproduction. The SOLO Rigging System enables tool-free setup, while Ar-Q Frequency Optimization tunes the array at the click of a dial. The KLA181 subwoofer delivers 1,000 watts, 135 dB SPL peak output, and a frequency range down to 33 Hz. Both models feature powerCON connections and extensive onboard DSP.
QSC KLA Series — buyer FAQs
What is the QSC KLA Series and what type of system does it form?
The QSC KLA Series is an active line array system combining powered enclosures and subwoofers with onboard DSP. The KLA12 is the main line array enclosure, while the KLA181 is an 18-inch vented subwoofer. Together they form a self-powered, full-range system suited to touring and installed sound applications. A configuration of five KLA12 enclosures delivers 90 degrees by 90 degrees nominal coverage without requiring a separate subwoofer.
Who makes the KLA Series and where does it sit in the QSC portfolio?
QSC is an American audio, video and control manufacturer, established in professional audio through power amplifiers, loudspeakers and networked systems. The KLA Series represents QSC's entry into compact active line arrays, positioned as a system that brings line array performance to applications where speed of deployment and ease of setup are priorities, without requiring conventional rigging hardware or external processing.
What are the key specifications of the KLA12 and KLA181?
The KLA12 runs a 500 W plus 500 W power module, a 12-inch low-frequency driver reaching down to 44 Hz, and a 1.75-inch diaphragm compression driver. The KLA181 subwoofer uses a 1,000 watt power module, reaches down to 33 Hz at minus 10 dB, and delivers a peak output of 135 dB SPL. Both units feature onboard DSP and powerCON input and thru connections.
How does the KLA Series deploy without tools, and how is the array tuned?
The SOLO Rigging System allows the KLA Series to be assembled and flown without tools or external hardware, supporting arrays of up to 480 lbs. The Ar-Q Frequency Optimization system then tunes the array at the click of a dial, adjusting automatically for the number of enclosures in use. The KLA181 also supports free-standing and suspended configurations via a threaded pole receptacle and M10 fittings or a KLA12AF Array Frame.
What should I check when buying a used QSC KLA Series system?
Check that the correct enclosure types and quantities are included, since KLA12 array enclosures and KLA181 subwoofers are separate units often sold individually or in sets. Confirm the SOLO rigging components are present and undamaged, as tool-free deployment depends on them. Verify onboard DSP and Ar-Q controls are fully functional. Used listings on this page show each unit's configuration and condition. 10K Used listings carry a 21-day warranty covering major functional faults; full detail is in the buying guide at 10kused.com/used-av-equipment-guide/.
