in ceiling speaker

in ceiling speaker Packaging instruction: Junyu ODM in-ceiling speakers are housed in fully sealed, acoustic suspension enclosures that maintain consistent high quality sound performance regardless of the environment. These speakers feature acoustic resonance control technology to eliminate unwanted standing waves for smooth, uniform frequency response. Junyu inceiling speakers are available with 6-inch or 8-inch drivers and 1-inch silk-dome pivoting tweeters that allow users to control the direction of the sound, thus maximizing the sonic clarity of the room.