This unit is an improved version of the highly praised 18W/8545-00 midwoofer, where a new aluminum chassis, an updated cone and a new spider as wells as a few other details are introduced, these updates improves mechanical stability and sound performance. High-quality magnet system design with patented Symmetric Drive (SD-1) continues to be key feature.

· Patented Symmetrical Drive Motor Design
· 42mm Voice Coil w. Alu foil
· Low Damping SBR Rubber Surround
· Coated Air Dried Paper/Carbon Fibre Cone
· Low-Loss linear suspension
· Aluminium Chassis