Powerful Bass & Coaxial Tweeter
The 1-inch dome tweeter generates abundant detail and clarity, projecting a solid and focused image for all sources.
Paintable & Removable Grille
Built-in, round, paintable & removable speaker fits into existing recessed designs in your home or workplace
Features flush mount design, can be easily installed on any plane.
Speaker Size: 5.25 lnch
Max Power: 600 Watts
Power Output: 150W
Max Sensitivity: 89 db
Impedance: 8 Ohms
Frequency Response: 60-20 KHZ
Total Speaker Diameter: 8.46 Inch（21.5CM）
Cut-Out Diameter: 7.3 lnch（18.5CM）
Speaker Depth: 4.33 Inch（11CM）
4* Ceiling Speaker
4* Speaker Cable
We have added a switch to the Bluetooth Amplifier which we sent you. If you’d like all 4 speakers to play the same music at the same time, the TWS switches needs to be off, and if you don't want to play the same music, you can turn on the TWS Switch
I'm only using 2 pairs, but they all sync up simultaneously and work very well. I dont see why 4 pairs wouldn't all work together as well. You may have to sync each pair to your bluetooth individually the first time, but once they've been synced they should all be recognized as the same bluetooth connection
there is a small square hole at the back of speakers.we just need use a small stick to push the grill out,and then paint it as you like.finally install it into with the speakers.