Polk Audio RCi Series 6.5" In-Ceiling Speaker (rc6s)

Easy One-Cut, Drop-In InstallationPuts built-in audio within reach, with Perfect Fit templates, a precision flange, and (available) pre-construction brackets; achieve secure, vibration-free efficiency with a simple turn of the patented Rotating Cam system.With Infinite Baffle TuningRCi speakers utilize the “virtual enc