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Alpine SWR-1522D
- 15″ subwoofer with dual 2-ohm voice coils
- Kevlar-reinforced pulp cone with Santoprene rubber surround
- cast aluminum frame with perimeter venting
- power range: 400-750 watts RMS (2000 watts peak power)
- frequency response: 18-400 Hz
- sensitivity: 87 dB
- mounting depth: 9-5/16″
- sealed box volume: 1.3-2.5 cu. ft.
- ported box volume: 1.5-3.0 cu. ft.