Any sound lover should consider getting the 18-inch subwoofer when they need uncompromising bass quality in their system. The 18 inch subwoofer range from PRORECK generates powerful low- frequency tones that work best in big event spaces and outdoor celebrations. The subwoofers deliver powerful performance and produce unmatched, rich bass sounds of high quality. People who need powerful subwoofers for live shows or event sound enhancement will find these units fully deliver on their performance needs. A deep rumbling bass will fill the environment while making a significant impact on everyone who hears it.