Two way compact high-performance bass instrument loudspeaker that features 2 proprietary PJB 4 ohm 7-inch drivers wired in series dsigned to handle high power levels of up to 200 Watts with extremly low distortion. A proprietary 3 inch (magnetic liquid cooled voice coil) cone tweeter augments the high-frequency component giving it a fully extended range of 30 Hz to 25 Khz.