KEF Ci4100QL-THX In-Wall LCR Architectural Single Speaker

The KEF Ci4100QL-THX is a THX Select2 certified in-wall LCR speaker built to deliver accurate, cinema-grade sound in a sleek architectural format.

Designed for serious home theater installations, the KEF Ci4100QL-THX combines THX-certified performance with KEF’s Uni-Q driver technology to create clear dialogue, strong dynamics, and even sound coverage across the room. Its flexible LCR design allows it to serve as a left, center, right, or surround channel speaker, while the Ultra-Thin Bezel keeps the finished look clean and discreet. This is a strong fit for custom theater rooms, media spaces, and high-performance in-wall surround systems.

Why installers choose this in-wall LCR speaker

• THX Select2 certification supports cinema-focused performance with accurate tonal balance and strong dynamic capability
• LCR design gives installers flexibility to use it as a left, center, right, or surround channel speaker
• KEF Uni-Q driver array helps create wide, even sound dispersion across more seating positions
• Multiple midrange drivers help improve dialogue weight, detail, and front-stage presence
• Strong fit for dedicated theater rooms and premium media spaces where clarity matters
• Ultra-Thin Bezel design helps the speaker blend cleanly into the wall
• Architectural format keeps the room visually clean without giving up real theater performance
• KEF mounting system supports secure, installer-friendly in-wall integration

Best use cases

• Dedicated home theaters that need THX-level front-stage performance
• Media rooms using in-wall left, center, and right speaker layouts
• Premium surround systems where wide dispersion helps cover multiple seats more evenly
• Architectural AV projects where visible speaker cabinets are not desired
• Installations that need flexible speaker orientation for different theater layouts

Recommended with this product

• Browse AV receivers for proper surround processing and theater system control
• Shop KEF in-wall speakers for matching LCR and surround system expansion
• Explore subwoofers for the low-end impact a true theater system needs
• View audio and speaker cables for a cleaner and more reliable installation

Quick guidance

The Ci4100QL-THX is a smart choice if you want a discreet in-wall speaker that is built for real theater use, not just background audio. It is especially appealing for customers building a clean LCR front stage with strong dialogue clarity and wide seating coverage. This speaker is sold individually, so most theater systems will require multiple units. If you want help planning the right speaker layout, contact us.

1. Is this a single speaker or a pair?
   This is a single speaker. For a full front stage you’ll typically order three, left, center, right.
   
2. Can I use it as the center channel?
   Yes. It’s an LCR design, so it works as Left, Center, or Right, which helps keep your front stage consistent.
   
3. Will it work with my AV receiver or amplifier?
   Yes. It’s a passive speaker, connect it to standard speaker outputs. Before install, confirm your stud bay space and mounting depth so the fit is clean.