Spare Parts

Other products
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– Twin 21″ high power loudspeakers
– 6″ voice coils for high power handling
– Cross-fire enclosure configuration
– Reinforced enclosure design
– Thunderous low frequency reproduction

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.

Technical Data
RMS Power Handling2 x 2000 W
Peak Power Handling2 x 8000 W
Frequency Range (-10 dB)28 Hz-125 Hz
Nominal Impedance2 x 4 ohms
On-axis Sensitivity 1 W / 1 m104 dB SPL
Rated Peak SPL at 1 m145 dB
Enclosure MaterialBirch Plywood
Connectors2 x NL4 Speakon
Dimensions (H x W x D)61 x 119 x 109.5 cm
24 x 46.9 x 43.1 in
Weight130 kg
286 lb
SF-221 2D Drawing

200 KB

Sound Force Series Catalog

Bilingual, 3 MB

Professional Audio Full Line Catalog

Link to online catalog.

Sound Force Connections Guide

PDF, SF158 + SF-221 connections, SF-10/SF-26 connections

Photo SF-221

High Resolution, 1MB

Sound Force Series User Manual


Data files for Sound Force Series

Data files for EASE Focus V3.0.18, EASE V4.3  1.7 MB

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