Description Technical data Accessories Link to manufacture product page Drivers 1 × 21″ Frequency range 27 – 125 Hz Power capacity program / peak 3600 / 7200 W Impedance 8 Ω Sensitivity 1 W / 1 m 98 dB SPLmax / 1 m 137 dB Connection NL4 2± Dimensions (H × B × T) 706 … Continue reading TW-Audio B21 Low-end elevated