Review on BOSS Audio MCBK425BA Motorcycle Speaker System: 2 Weatherproof 3 Inch Speakers with Built-in Amplifier for ATVs, Motorcycles, and 12 Volt Vehicles by Marc Stewart

I made a bracket for these speakers because I wanted to mount them under the roof of a Honda P500. I removed the road bike's factory metal clip and added a factory roof roll cage latch clip. I ordered the same from Revain. It's noisy. You have manual volume control as well as volume control via your device. You can use one or two speakers out of the box, but if you use one the additional speaker will not function as Bluetooth on its own but can be added to an existing system.