20w Coaxial Ceiling Speaker 5inch Bass 70v/100v Decorative Home Theater Background Music Sound Public Address Broadcast System - Speakers - AliExpress
30w Powered In-ceiling Speaker Bass Hifi Stereo Sound Home Audio Pa Background Music System Coxial 8ohm Broadcast Speakers Hotel - Public Address System / Installation Sound - AliExpress
Pyle Home 9.5-in 250-Watt Set of 2 Bluetooth Compatibility Indoor In-ceiling Speaker in the Speakers department at Lowes.com
Amazon.com: Polk Audio 70-RT 3-Way In-Ceiling Speaker (2.5” Driver, 7” Sub) - The Vanishing Series | Power Port | Paintable Grille | Dual Band-Pass Bass Ports White, White : Everything Else
Amazon.com: Pyle Ceiling Wall Mount Enclosed Speaker - 400 Watt Stereo In-wall / In-ceiling 8" Enclosed Full Range Deep Bass Speaker System - 50Hz-20kHz Frequency Response, 4-8 Ohm, Flush Mount - PDIW87
Doctor ProAudio.com (el DoPA)
OSD Black Series R62SS Super-shallow-mount in-ceiling speakers at Crutchfield
Active Ceiling Wall Mount Speaker 40w 8 Inch Powerful Bass Class D Amplifier Bluetooth-compatible Bathroom Bedroom Retail Store - Loudspeaker - AliExpress
Amazon.com: Herdio Bluetooth Ceiling Speakers 4 Inches 2-Way with Amplifier Receiver for Home Theater Living Room Office(4 Speakers) : Electronics
Amazon.com: Polk Audio RC80i 8-inch Premium 2-way In-ceiling Speakers | Set of 2| PLUS PSW505 12-inch Powered Subwoofer | Upgrade your Home Theater Now! : Electronics