Wireless stereo sound system blue-tooth ceiling speaker for home hotel multi area background music system
rms power: 4x20w maximum power: 4x40w amplifier channel: 4 channel, rms 4x20w amplifier board amplifier type: digital class d speaker driver: 8"*1 impedance: 8ohm frequency response: 60hz-15khz sensitivity: 93±3 db installation: fast in-ceiling thd: <0.05% at 1khz,1/3 rated output power s/n: >70 db power supply: dc15v5a material: metal front grille + abs ceiling opening: φ205mm decorative cover size: φ228*90mm weight: 4kg