TCi Series In-Wall/In-Ceiling Loudspeakers are the performance alternative for custom installed sound systems. They give you Total Control over your Total Custom built-in audio installation with superior sound and superior user controls. Mix and match TCi In-Wall/In-Ceiling Loudspeakers with Polk Audio RTi Series loudspeakers to create a voice-matched home theater system boasting life-like surround sound without the space requirements of traditional speaker systems (RTi front stage, TCi rear surrounds for example).