Earthquake Sound SUB8 Passive in-Wall/in-Ceiling 8' Subwoofer

Shallow Woofer System (SWS): Earthquake Sound is the original inventor of the famous and patented SWS series of low profile / shallow mounting subwoofers delivering deep bass for in-wall and in-ceiling applications Lowpass Crossover Filter: The SUB8 is equipped with an iron core 100% copper wire lowpass crossover network to filter out voices and instruments leaving the listener with pure bass