Bowers & Wilkins Reference Series CWM7.4 S2 2.5-way multi-purpose in-wall speaker at Crutchfield
Amazon.com: Polk Audio 65-RT In-Wall Speaker (1) 6.5" driver - The Vanishing Series with Premium Sound | Power Port & Paintable Grille White : Electronics
Klipsch 7.0 In-Wall System with 2 R-3800-W II In-Wall Speakers, 1 Klipsch R-5502-W II In-Wall Speaker, 4 Klipsch CDT-3800-C II In-Ceiling Speakers
Focal On Wall speakers: The next best thing to in-wall speakers? | TechHive
Black Series T81 8" In-Wall Speaker | Outdoor Speaker Depot