Earthquake Sound SUB6 Passive in-Wall/in-Ceiling 6.5" Subwoofer

EARTHQUAKE Sound SUB6 Passive in-Wall/in-Ceiling 6.5" Subwoofer

Monoprice Fiber In-Wall Speaker - 10 Inch, 300W Subwoofer, Easy Installation And Paintable Grill - Caliber Series

Polk Audio 255c-RT in-Wall Center Channel Speaker (2) 5.25" Drivers - The Vanishing Series | Easily Fits into The Wall | Power Port | Paintable Grille Black, White