6.5 inch 40w bluetooth ceiling speaker in ceiling wall roof built-in speaker class d amplifier home theater sound system

6.5 inch 40w bluetooth ceiling speaker in ceiling wall roof built-in speaker class d amplifier home theater sound system 6.5 inch frameless coaxial ceiling speaker with magnetic grill (4pcs/set):▪ Power: 4x40w▪ Maximum power: 4x80w▪ Frequency response: 50hz-22khz▪ Resistance: 8hp▪ Sensitivity: 90db±3db▪ Speaker unit: 6.5 coaxial unit integration ""▪ Bluetooth version: 5.1, wireless transmission range more than 10 meters▪ Amplifier: class d digital power amplifier module▪ Non-linear distortion thd: < 0.05% at 1khz, 1/3 rated output power▪ S/n: what? > 80 db▪ Power supply: ac110v ~ ac220v ± 10% 50-60hz▪ Installation: ceiling mounted▪ Decorative material: abs▪ Product size: 23590mm▪ Opening hole size: ☑ 205 mm▪ Weight: 6.5 kg.6.5 inch frameless coaxial ceiling speaker with magnetic grill (2pcs/set):▪ Power: 2x40w▪ Maximum power: 2x80w▪ Frequency response: 50hz-22khz▪ Resistance: 8hp▪ Sensitivity: 90db±3db▪ Speaker unit: 6.5 combination " Coaxial unit▪ Bluetooth version: 5.1, wireless transmission range more than 10 meters▪ Amplifier: class d digital power amplifier module▪ Non-linear distortion thd: < 0.05% at 1khz, 1/3 rated output power▪ S/n: what? > 80 db▪ Power supply: ac110v ~ ac220v ± 10% 50-60hz▪ Installation: ceiling mounted▪ Decorative material: abs▪ Product size: 23590mm▪ Opening hole size: ☑ 205 mm▪ Weight:3.2kg.Tips:1. Model btf44 has tws function. the main speaker must be connected to the slave speaker through the speaker cable. the newly added tws function can recognize the interconnection of up to two bluetooth main speakers. the distance across the glass is limited to 10 meters if it is a thick wall. the distance is limited to 7-8 meters.2. Can be connected to the tv and let the tv sound play in the ceiling speakers at the aux connection terminal. with the audio cable, it cannot be connected to your tv directly by bluetooth. if your tv's bluetooth is only a one-way link3. Please note that the bluetooth name is surpass, the password is 1688. if you don't want to pair the password or want to connect the bluetooth tv, smart voice assistant and other devices via bluetooth. please contact customer service for replacement before placing an order.4. We can customize your bluetooth name and password according to your needs. the password must use 4 digits (except 0000). if you need to modify it, please make a note after placing your pre-order or contact customer service, otherwise we will send it according to the default bluetooth name and password.The package includes:Bluetooth speaker x1/2/4Power supply x1Speaker cable (optional)Note: this bluetooth ceiling speaker does not have a remote control. if you want to have & Nbsp; remote control please contact us to pay the remaining balance of 5$ to add the remote control function.