Professional Passive Hifi Stage Speaker 1000 W Black 37x37x64cmThis professional passive Hifi stage speaker is durable and suitable for medium sized gathering, events and parties. This enclosure contains high output woofer to produce a professional quality sound. The heavy duty 12 inch (30 cm) woofer extends the frequency response to the lowest range and provides bass. The bass is particularly recommended to use PA speakers, especially suitable for dancing and music activities under the background of heavy bass.