Bowers & Wilkins CWM 663 In-Wall Speaker (Each) av-stand It uses iFi Active Noise

It uses iFi Active Noise Cancellation2 tech to decrease noise by 100x or -40dB in comparison to the common noise filter

If you’re seeking the ultimate in sound quality

or center speaker in high-quality home theater or music systems

Input Sensitivity

2V SE and 4V BAL and thus is compatible with both HiFi and Pro systems

Bowers & Wilkins CWM 663 In-Wall Speaker (Each) av-stand It uses iFi Active NoiseThe CWM663 features a blue Aramid fiber bass midrange driver housed in a die cast chassis which provides the extra rigidity to provide a cleaner, faster bass. It's aluminum tweeter also incorporates a Nautilus tube to absorb unwanted sonic radiation. The CWM663 also utilizes a three position high frequency switch to fine tune the sound. The speaker is incredibly easy to install incorporating QuickDogs and plug and play functionality.