L-Acoustics | K3 - 2-way: 2 x 12" LF + 4" HF diaphragm

L-Acoustics | K3 - 2-way: 2 x 12" LF + 4" HF diaphragm

The K3 is a compact, full-range line source element for mid-sized events and venues. This two-way active WST enclosure with two 12 inch drivers delivers a bandwidth from 42 Hz to 20 kHz and up to 143 dB SPL, without the need for a flown subwoofer. At 43 kg, and about a third smaller than the K2, it combines the K Series sound character with a form factor that is easy to transport, rig and place.

Full-range sound from a compact enclosure

The K3 reaches down to 42 Hz on its own, which makes it a complete main system for vocals and music in most applications. Its dual 12 inch design brings the low-end contour of a much larger enclosure into a form factor close to that of a 10 inch system. The DOSC waveguide gives the K3 long-throw capability of more than 35 m, so the audience at the back hears the same clear sound as the audience at the front.

Panflex for flexible coverage

With Panflex, a single K3 enclosure offers four horizontal directivity patterns: 70° or 110° symmetric, or 90° asymmetric on either side. Combined with inter-element angles from 0.25° to 10°, you can tailor the coverage precisely to the audience geometry, reduce sound spill and avoid reflective surfaces.

Efficient to amplify and deploy

The K3 is designed as a two-way active loudspeaker that requires two channels of amplification, so one LA12X amplified controller can power up to six K3 enclosures. A single LA-RAK AVB rack can drive up to 18 K3. This means fewer amplifiers, less cabling and less truck space, which makes a K3 system faster, simpler and more economical to deploy.

Rugged and quick to rig

The K3 integrates a captive four-point rigging system with visual safety checks, and handles on both sides. The cabinet is built from premium-grade Baltic birch plywood with die-cast aluminium side panels, and a range of rigging and transport accessories makes storage, truck loading and deployment straightforward.

Typical applications

• Mid-size concerts and festivals (roughly 1,000 to 10,000 people)
• Corporate events, conferences and houses of worship
• Theaters and concert halls
• Main system for small to mid-capacity touring and rental
• Outfills, delays and side hangs for K1 and K2 systems

Pair it with

The K3 is driven by an L-Acoustics amplified controller such as the LA4X, LA8 or LA12X. For events that need extra low-frequency power, combine it with the KS28 subwoofer, which turns the K3 into a compact main system for sonically demanding shows. Together with the K2 and K1, the K3 scales up to large-capacity productions.

Want to know more?

Planning a K3 system and not sure how many enclosures, amplifiers or subwoofers you need? Contact us and we'll be happy to advise.

Acoustical

• Usable Bandwidth (-10 dB): 42 Hz – 20 kHz
• Maximum SPL: 143 dB
• Nominal Directivity (-6 dB): Horizontal: 70° / 110° symmetric or 90° asymmetric; Vertical: depending on the number of elements and array curvature
• Transducers: LF: 2 × 12" neodymium cone drivers; HF: 1 × 4" neodymium diaphragm compression driver
• Acoustical Load: LF: Bass-reflex, L-Vents; HF: DOSC waveguide, Panflex
• Nominal Impedance: LF: 8 Ω; HF: 8 Ω

Physical

• Connectors: 2 × 4-point speakON
• Rigging and Handling: Flush-fitting 4-point rigging system; 2 handles; inter-enclosure angles: 0.25°, 1°, 2°, 3°, 4°, 5°, 7.5° or 10°
• Dimensions (H × W × D): 950 × 357 × 403 mm
• Weight (Net): 43 kg
• Cabinet: Premium-grade Baltic birch plywood
• Front: Coated steel grille, acoustically neutral 3D fabric
• Rigging Components: High-grade steel with anti-corrosion coating
• Finish: Dark grey brown Pantone 426 C
• IP Rating: IP55