SF-221 – Twin 21″ Subwoofer

The SF-221 is a twin 21″ subwoofer system designed to provide high levels of low frequency energy.

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Product Description

The SF-221 is a twin 21″ subwoofer system designed to provide high levels of low frequency energy. The loudspeakers, equipped with 6″ voice coils, highly effective heat dissipation schemes, and an extremely robust mechanical design are ideal for dance club applications where long hours of demanding use is the norm. The reinforced enclosure design and cross-fire configuration are key in providing stunning, high-intensity bass. Product features
  •  Twin 21″ high power loudspeakers
  •  6″ voice coils for high power handling
  •  Cross-fire enclosure configuration
  •  Reinforced enclosure design
  •  Thunderous low frequency reproduction
  • RMS Power Handling 2 x 2000 W
  • Peak Power Handling 2 x 8000 W
  •   Frequency Range (-10 dB) 28 Hz-125 Hz
  • Nominal Impedance 2 x 4 ohms
  • On-axis Sensitivity 1 W / 1 m 104 dB SPL
  • Rated Peak SPL at 1 m 145 dB
  • Enclosure Material Birch Plywood
  • Color/Finish Black/ISO-flex
  • Connectors 2 x NL4 Speakon
  • Dimensions (H x W x D): 61 x 119 x 109.5 cm 24 x 46.9 x 43.1 in
  • Weight:130 kg, 286 lb

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