12′′ (30 cm) R-Series Subwoofers (4Ω + 4Ω)
Alpine is proud to announce the introduction of the new R-Series Subwoofer lineup that is built off the highly esteemed Type R platform. With select key design and build improvements, the R-Series Subwoofer is able to output more of that deep bass extension and control that the Type-R is known for.
Stronger Cone Assembly
R-Series subwoofers feature a Kevlar-treated cone for durability. The combination of this cone with the Santoprene surround allows the subwoofer to deliver 19mm of X-max, for incredible, hard-hitting bass. A new method of attaching the spider and cone to the voice coil ensures not only rigidity throughout the motor structure but contributes to the subwoofers increased accuracy.
More Rigid Dust Cap
Talc, a common mineral used in products such as baby powder and paint, has been found to have incredible damping properties while being less dense than the traditional Mica filler used in dust caps. By adding a calculated amount of talc to the mica polypropylene in the dust cap, we were able to increase vibration absorption of the cap while lowering the density. The resulting lighter dust cap contributes to a faster attack and a more accurate reproduction of low frequencies.
Material: Oversized Hairline-Textured Mica Poly Dustcap w /
Kevlar Reinforced Pulp Paper Cone Body
Design: 2-Piece Parabolic
Material: Injected Molded Santoprene®
Design: High Amplitude Multi-Roll H.A.M.R Surround Design (Patent Pending)
Design: 10 Segment High-Roll Progressive Design
Material: 180ºC High Temp Wire on Sprial-Cut Aluminum Bobbin
Design: 4-Layer Dual Voice Coil
Pole Geometry: FEA Optimized Design w/ Compound Radius Pole Geometry
Configuration: Radial Vented VC Heat Sink and Airflow Management System (Patent #7,634,101)
Material: Cast Aluminum
Design: Perimeter Vented Heat Transfer (Patent Pending), Integrated Shorting Sleeve and Airflow Management System
Layout: One Sided
Design: Heavy Duty 8 gauge Push with Housing, Banana Plug Jumper
Design: Reinforced Layer Spider Integration (Patent #6,810,988)
Design: Concealed Mount Gasket System
RMS Power Handling: 750W
Peak Power Handling: 2250W
Mounting Depth: 162mm
Mounting Diameter: 275mm
Displacement: 0.10 cu. Ft.
Added Volume: 0.09 cu. ft. (Reverse Mount, Magnet Out)
Frequency Response: 24Hz - 200Hz