Alpine Alpine SWR-1522D Type R 15 Specs

Audio 15" subwoofer with dual 2-ohm voice coils
Frequency Response 18-400 Hz
Frequency Response 20-400 Hz
Material Kevlar-reinforced pulp cone with Santoprene rubber surround; cast aluminum frame with perimeter venting
RMS Power Rating 400-750 watts
Sensitivity 87 dB
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