Here are some of the features of the Pyramid PW1087:
Sapphire Blue Chrome Plated Polypropylene Cone
Chromed Back Plate
Wave-Like Butyl Rubber Surround
Bumped & Vented Yoke
2'' High Temperature Aluminum Voice Coil
80 oz. Heavy Magnet Structure
400W RMS/800W Peak
SPL (1W/1M): 88dB
4 Ohm Impedance
Overall Diameter: 10''
Mounting Depth: 4.17''
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