Bluetooth 5 inch 20w active ceiling speaker 

MC-5B is a high power Ceiling loudspeker with bluetooth,which adopts 4.2 Bluetooth wireless transmission technology, it can support seamless compatibility of multiple Bluetooth devices and Bluetooth password pairing, and can connect over long distances, with a straight line unobstructed distance of up to 15-20 meters.This is an active ceiling speaker, it use imported digital power amplifier module. Unlike traditional wiring methods, this one does not require wiring and is ready to use without the need for power amplifiers. It can be connected to the sub in ceiling speakers,one to three pcs speakers could be connected with it.And 1 in the left channel at L+, L-, and right channel 2 in R+, R-, R+, R- terminals. Specification Model:MC-5B Rated Power:20W S.P.L.:88dB(1W/1m) Max S.P.L.:98dB(Pmax/1m) at 15694Hz Freq. Resp.:;70Hz-20KHz 1000Hz dispersion angle : 120° Conical diffusion Unit size :5"(130mm)Bass,0.5"(…