Here are some of the features of the Pyramid 558GS:
5'' Black Poly Resin Coated Woofer Cone
40 oz. Magnet Structure
1'' Hi-Temperature Ferro Fluid Enhanced Voice Coil
1.75'' Aluminum Film Tweeter
180 Watts Peak Power
4 Ohm Impedance
Frequency Response: 90-18kHz
1.88'' Mounting Depth
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