REL - Planar PL-2 Maximum Performance. Minimal Space PL-2 is REL’s solution for spaces where traditional subwoofers do not fit. Designed to work in close relationship with the wall behind it, Planar uses boundary effect coupling to deliver deep, room-filling bass and remarkable scale from an ultra-thin form that occupies little-to-no floor space. Deep Bass, Minimal Space REL Performance in an Ultra-thin Form Traditional subwoofers often demand significant floor space to produce deep, powerful bass. PL-2 takes a different approach. By working in close relationship with the wall behind it, Planar uses boundary effect coupling to make the wall part of the acoustic system projecting bass into the room with scale, depth, and authority that feels far larger than the product itself.Whether mounted directly on-wall or placed close to the wall using the optional Cart, PL-2 delivers powerful, immersive performance for modern rooms and open living spaces where traditional subwoofers struggle to integrate gracefully. Feature Set Includes: 500-Watt Pure Class D Amplifier 8” FlatPiston Driver 10” Boundary-Coupled Passive Radiator Ultra-Thin Cabinet for Near- or On-Wall Placement Built-In Airship Direct Wireless Optional Cart for Flexible Placement Cloth Grill or Optional Premium Wood Grill Two Color Options Available Technical Specifications: Type (1) Front-firing active woofer, (1) Rear-firing passive radiator Active Driver Size & Material 8in. (205mm) FlatPiston active long-throw, steel chassis Passive Radiator Size & Material 10in. (250mm) FibreAlloy cone, steel chassis Low Frequency Extension -6 dB at 24 Hz, in room Input Connectors HIGH-LEVEL Neutrik SpeakOn, LOW-LEVEL RCA, LFE RCA Power Output 550 watts (RMS) Amplifier Type Pure Class D Wireless Capability Built-in Wireless