Alto Pro TX4 Active PA Speaker with Bluetooth (Single) The TX415 is the most powerful unit in the TX Series and there is very little that this speaker can't doNaturally, it makes easy work out of projecting compelling and pristine sound into large venues of all varieties as well as outdoor event spaces and festival grounds. However, this speaker is just as much about precision and detail as it is about sheer sonic force. The TX415 was tuned and designed in the United States and is optimized for top-of-the-line frequency response. Musicians, DJs, and performers of all kinds can rest assured that your audio will be delivered with pristine clarity, whether it's being played at full blast or at more intimate volumes. This capable speaker is easy to set up and simple to operate, requiring little to no previous knowledge of sound equipment to get up and running. Thanks to Bluetoothconnectivity, the Alto Professional TX Series ensures that users can get their PA system up and running comple