Definitive Technology UIW RLS III In-wall multi-purpose speaker with built-in back-box

The Definitive Technology UIW RLS III is a top-tier in-wall speaker designed for audiophiles and home theater enthusiasts who want immersive sound without sacrificing floor space. As part of the Reference Line Source (RLS) series, this speaker provides crisp highs, rich midrange, and deep bass, making it a perfect choice for movies and music alike. It can serve as a left-, right-, or center-channel speaker in a surround sound setup or be used in pairs for a high-end stereo system.

One of its key advantages is the built-in sealed back-box, which ensures optimal sound quality regardless of wall cavity size. This airtight enclosure prevents sound distortion, enhances clarity, and minimizes audio leakage into adjacent rooms. It also protects internal components from dust and debris, ensuring long-term durability.

The UIW RLS III features a 1-inch aluminum dome tweeter for detailed high frequencies, dual 5.25-inch polypropylene cone midrange/bass drivers for balanced audio, and dual 5.25-inch pressure-coupled passive radiators that extend the bass response for deep, room-filling sound.

With a slim profile and a paintable magnetic grille, the UIW RLS III blends seamlessly into any décor. It is also compatible with the RLS III rough-in kit for easy installation. Whether you’re upgrading your home theater or building a custom audio system, this speaker delivers the performance you need for an exceptional listening experience.

Features

• Premium in-wall speaker for home theater or stereo systems

• Built-in sealed back-box for consistent sound quality and dust protection

• Functions as a left-, right-, or center-channel speaker

• 1″ aluminum dome tweeter for crisp high frequencies

• Dual 5.25″ polypropylene midrange/bass drivers with cast baskets

• Dual 5.25″ pressure-coupled passive radiators for enhanced bass response

• Paintable magnetic grille for a discreet, seamless look

• Compatible with the RLS III rough-in kit for simplified installation

Specifications