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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