Martinlogan MC6-HT Retrofit Back-Box Create A Sealed Enclosure For Select Martinlogan In-Ceiling Speakers

Wharfedale Elysian C Center Channel Speaker - Piano Walnut

Revel C763L In-Ceiling Home Theater Speaker With Built-In Back-Box

Headrush FRFR112 MKII Bluetooth Powered Speaker Cabinet

RCF NX 985-A 3-Way Active Loudspeaker

Sony BRAVIA Theater Quad Surround Sound System, 16 Speakers, 4 Wireless, Dolby Atmos/DTS:X, 360 Spatial Sound Mapping, Home Theater Sound System