Aluminum Cone Designed for Compact BodyBuilt-In 160 Watts Output Class-D AmplifierDigital Bass Control (Selectable Bass Mode: Deep or Dynamic)Wired Remote Control (Gain, LPF, Phase, Bass Mode)Max. Music Power (Nominal): 160 W (50W)Cone Composition: AluminumVoice Coil Type: Copper Round Wire 4-LayerVoice Coil Bobbin Type: Glass ImideLowest Resonance Frequency: 32 Hz