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Product Name:  TT-221B subwoofer

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About this product:

Model：TT-221B

Type：Dual21’’ subwoofer loudspeaker system
Drivers： 2 x 21'' LF
Frequency Response（±3dB)：30 Hz-1k Hz
Rated Power(AES/Peak)：2000W /4000W
Sensitivity（1m/1w)：105 dB  
Nominal Impedance： 2 × 4 ohms
Dispersion（-6dB)：   0°
Connector：  2×Neutrik Speakon NL4'S
Pin assignment :  NL4: +1/-1
Enclosure： 25mm Premium Finland Birch Plywood
Protective Grille :  Black perforated steel grille                            
Finish：Black polyurea coating
Dim.（HxWxD)：584x892x765mm[ 23 x 35 x 30 in]
N.W：87 Kg / 191.4 Ibs  
Packing: Carton