Alpine SWR-1242D 12" Subwoofer

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Loud. Clean. Long. Alpine Type-R subwoofers play loud, clean, and long. The Type-R’s are designed from HAMR Engineering, Alpine's exclusive subwoofer solution for cooler operation, longer life, and tight, accurate bass. The main philosophy behind HAMR Engineering is to ensure the ultimate sound quality and performance through the use of highly advanced materials and patented design technologies such as magnetic, structural finite element analysis, and a 3rd generation CRC motor structure. The Type-R subwoofer features an ultra long linear excursion for dynamic, realistic sound. Exclusive cooling technologies contribute to huge power handling capabilities. You can depend on the Type-R to compliment your system with deep, accurate bass.

FEATURES

Gasket
- Design: Concealed Mount Gasket System
Tinsel Leads
- Design: Reinforced Layer Spider Integration (Patent #6,810,988)
Terminals
- Design: Heavy Duty 8 gauge Push with Housing, Banana Plug Jumper
- Layout: One Side
Frame
- Design: Perimeter Vented Heat Transfer (Patent Pending)
- •Material: Cast Aluminum
Motor Structure
- Configuration: Radial Vented VC Heat Sink and Airflow Management System (Patent Pending)
- Pole Geometry: Compound Radius Curve (Patent #6,639,993)
Voice Coil
- Design: 4-Layer Dual Voice Coil
- Material: 180°C High Temp Wire on Spiral Cut Aluminum Former
Spider
- Design: Mirrored Progressive
- Material: Nomex®
Surround
- Design: High Amplitude Mutli-Roll
- Material: Injected Molded Santoprene®
Diaphram
- Design: 2-Piece Structural Parabolic
- Material: Kevlar Reinforced Pulp Fiber

SPECIFICATIONS

General
- Frequency Response: 25Hz - 500Hz
Dimensions
- Added Volume: 0.085 cu. ft. (Reverse Mount, Magnet Out)
- Displacement: 0.071 cu. ft (Front Mount)
- Mounting Diameter: 275 mm (10.9)
- Mounting Depth: 195 mm (7.7)