In-wall KEF THX speakers mount flush within walls and can serve front, rear, or center channels, with dedicated in-wall subwoofer options for low-frequency support. In-ceiling KEF THX speakers fit overhead and include LCR-capable designs, making them useful when the theater layout calls for discreet ceiling placement or expanded sound coverage.

THX Select2 and THX Ultra2 are different performance classifications for home theater speakers, with Select2 models suited to many residential theater installations and Ultra2 models designed for larger rooms or more demanding setups. The assortment includes both classifications across in-wall, in-ceiling, and subwoofer designs, so choose the rating that aligns with the room size, system layout, and required output.

KEF THX speakers connect to an AV receiver or dedicated amplifier through speaker wiring, with in-wall and in-ceiling models serving as front, center, surround, or LCR channels. Dedicated in-wall and in-ceiling subwoofers can add low-frequency output through a compatible amplifier, while the receiver or processor manages crossover settings, channel assignment, and surround sound formats.

Before specifying THX architectural speakers, confirm whether each speaker is designed for in-wall, in-ceiling, or either installation, then review its cutout dimensions, mounting depth, framing, cable routing, and placement requirements. Also verify amplifier requirements, especially for architectural subwoofers that use a compatible system amplifier, and check whether the installation environment calls for weather-resistant construction, a magnetic grille, or an ultra-thin bezel.