Alpine R Series - Subwoofer Specifications and Parameters; General Technical Specifications; Thiel-Small Performance Parameters

Aluminum Dust Cap
Black Anodized
Threaded Frame
Rear Mounting Frame
M4 Thread
Die-Cast
Aluminum Frame
DD Linear Dual Magnetic Gap
Low Distortion at High Excursion
Frame Trim Ring
Compatible with RS Grille Kit
Vented Coil Former
Enhanced Air Flow
Dual R-Series
Terminal
Motor Cooling Fin
Transfer heat from the voice coil
Neodymium Magnet
High Grade SH Magnet
4" Voice Coil
High Temp USA wire
Cone Assembly
Holder