Here are some of the features of the Pyramid PW1287:
Sapphire Blue Chrome Plated Polypropylene Cone
Chromed Back Plate
Wave-Like Butyl Rubber Surround
Bumped & Vented Yoke
2'' High Temperature Aluminum Voice Coil
100 oz. Heavy Magnet Structure
500W RMS/1000W Peak
SPL (1W/1M): 89dB
4 Ohm Impedance
Overall Diameter: 12''
Mounting Depth: 5.21''
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