From outdoor events to almost any practical application that requires a volume boost the PyleHome 9.7 Inch 20 Watt Indoor and Outdoor PA Horn Speaker can kick it up a notch. Measuring 9.7 inches with 20 watts of raw sound power this speaker is great for making your voice heard at any indoor or outdoor space or venue. This speaker features a nominal impedance of 8 ohms 400 Hz-5 KHz frequency range and aluminum housing for strength and durability. With mounting bracket and hardware the PyleHome 9.7 Inch 20 Watt Indoor and Outdoor PA Horn Speaker is ready to be mounted to walls ceilings and much more.