Here are some of the features of the Pyramid WH68:
Bumped and Vented Motor Structure
Specially Treated Purple Cloth Edge Suspension
Bumped Yoke Plate For Extended Excursion
1'' High Temperature Aluminum Voice Coil
40 oz. Stronium Magnet Structure
100W RMS/200W Peak
SPL (1W/1M): 96dB
8 Ohm Impedance
Overall Diameter: 6''
Mounting Depth: 2.75''