Used L-Acoustics 12XT / 12XTi
Used L-Acoustics 12XT / 12XTi speakers are high-performance coaxial enclosures designed for clarity, precision and 90-degree axi-symmetric directivity across the full frequency range, available in active/passive and passive architectural configurations. Whether you are searching for a second-hand 12XT or 12XTi, browse the current used listings available below to find the right unit for your application.
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L-Acoustics 12XT / 12XTi specifications
| Brand | L-Acoustics |
| Segment | Audio |
About the L-Acoustics 12XT / 12XTi
The L-Acoustics 12XT / 12XTi is a coaxial speaker pairing a 3-inch diaphragm compression driver with a 12-inch low-frequency transducer in a bass-reflex tuned enclosure. The coaxial arrangement delivers a 90-degree axi-symmetric directivity pattern and a smooth tonal response free of secondary lobes. The 12XT operates in active configuration via the LA4 amplified controller, which manages crossover, system EQ, time-alignment and transducer protection, or in passive configuration using an onboard proprietary third-order crossover network. Nominal impedance is 8 ohms in both configurations. The wedge-shaped Baltic birch plywood cabinet suits stacked, flown, pole, wall and ceiling-mounted installations. The 12XTi is the mid-sized model of the L-Acoustics Architectural Series, covering 55 Hz to 20 kHz, extendable to 32 Hz with the addition of the SB18i subwoofer.
L-Acoustics 12XT / 12XTi — buyer FAQs
What is the L-Acoustics 12XT and how does it differ from the 12XTi?
The 12XT is an active/passive coaxial enclosure pairing a 3-inch diaphragm compression driver with a 12-inch bass-reflex-loaded low-frequency transducer, operating at 8 ohms in both configurations. The 12XTi is the passive-only mid-sized model from the L-Acoustics Architectural Series, covering 55 Hz to 20 kHz. Both share the coaxial driver arrangement delivering 90-degree axi-symmetric directivity, but the 12XTi is positioned specifically for architectural installation use.
Who makes the 12XT and where does it sit in the L-Acoustics range?
L-Acoustics is a French professional audio manufacturer founded in 1984 and known for line source loudspeakers, subwoofers and amplified controllers used in touring, festivals and installations. The 12XT sits in the company's coaxial speaker line as a flexible active/passive enclosure, while the 12XTi is the mid-sized model within the dedicated Architectural Series, extending that coaxial technology into fixed-installation contexts.
How does the active configuration of the 12XT work, and what controller does it require?
In active configuration the 12XT relies on the LA4 amplified controller to manage crossover functions, system EQ, time-alignment between the HF and LF transducers, and transducer protection. Each LF and HF section presents 8 ohms independently in this mode. In passive configuration, the speaker uses its own onboard proprietary third-order crossover network, with linearisation and protection parameters still defined through the LA4.
What installation options does the 12XT cabinet support?
The wedge-shaped 12XT cabinet suits stacked sound reinforcement applications and can also be flown or mounted on a pole, wall or ceiling, making it adaptable across live and installed environments. The cabinet is constructed from Baltic birch plywood, chosen for its mechanical and acoustical properties and long-term durability.
What should I check when buying a used L-Acoustics 12XT or 12XTi?
Confirm which configuration is being sold: the 12XT can run active or passive, so verify whether an LA4 controller is included or available separately. For the 12XTi, check whether an SB18i subwoofer is paired if low-frequency extension below 55 Hz is needed. Inspect the cabinet, drivers and grilles for wear consistent with the unit's history. Used listings on this page carry a 21-day warranty covering major functional faults; the buying guide at 10kused.com/used-av-equipment-guide/ covers the full process.
