Here are some of the features of the Pyramid 578GS:
5'' x 7'' Yellow Injection-Molded Polymica Cone Woofer
Specially Treated Rubber Edge Suspension
Fits Both 5'' x 7'' and 6'' x 8'' Configurations
Resists Moisture and Temperature Extremes
40 oz. Magnet Structure
2'' Aluminum Film Tweeter
200 Watts Rated Power
SPL: 90dB
Frequency Response: 70Hz-18k Hz
4 Ohm Impedance
Mounting Depth: 2''
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