Efficiency: 87%

Installation depth: 82 mm

Provides the ideal foundation for a second layer of sound absorbers or acoustic foam

and a space-saving design in a modern monoblock amplifier

B² Audio Rampage 18" Elite 12" (30cm) Helix Efficiency: 87%The B Audio Rampage 18" Elite was designed for uncompromising systems that demand the highest power handling, extreme excursion, and maximum control. With its massive 4 inch voice coil, enormous ferrite motor assembly, and rigid carbon fiber cone, this 18 inch subwoofer delivers impressive deep bass even under sustained high loads. Thanks to its sophisticated cooling design and robust suspension, the Rampage Elite is suitable for both high performance