Here are some of the features of the Pyramid 312SX:
3.5'' Dual Cone Air Suspension Woofer
Resists Moisture and Temperature Extremes
20 oz. Magnet Structure
100 Watts Rated Power
4 Ohm Impedance
Frequency Response: 100-16kHz
SPL: 89dB
Mounting Depth: 1.25''
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