- Ultra-slim 3 mounting depth - Injected poly dust cap and cone with PR family appearance - Heavy duty stamped basket - Rubber surround - Improved sensitivity and low end response over previous slim subwoofer offerings - 45oz magnet - DVVC Direct Vent Voice Coil Cooling - Now featured in PRXS110E loaded enclosures Power Reference shallow mount subwoofers bring the reliability and powerful bass response of the Power Reference subwoofers to limited space applications. With an ultra-slim mounting depth of under 3 PR Shallow Subs are capable of fitting under seats and behind truck benches to bring big bass to any space. Reliability and durability are at the core of the Power Reference product line and these slim subs are no exception. Memphis engineered these subs with DVVC (Direct Vent Voice Coil) cooling allowing them to rapidly dissipate heat to play louder, longer. These subwoofers feature a reinforced heavy duty stamped basket and are capable of handling 350(w) RMS power.