SD-6S-ALU High Definition In-Ceiling Speakers comes with 6.5” durable aluminum speaker cone and special circuit designed by Soundavo engineering team, to provides the superior tonal characteristics, good moving air with transparency sound, dynamic and big. It's a very tuneful "comfortable Listening" speaker and great cohesive spatiality, it gives you a nice string resonances, detail midranges and also handle a large amount of bass with vibrations to the deep sound.