Soundsing Audio Manufacturing Co.,Ltd is one of the leading China high power 21"subwoofer manufacturers and suppliers, providing with high power 21"subwoofer wholesale, welcome to import high quality products from our factory.
SD-21002A is a high power 21 subwoofer. Big size magnet and voice coil, dual dampers, low distortion. To have better strength cone, we have done special treatment. You want deep bass 21” speaker, this is quite good choice.
DJ Professional Speaker Feature
Dual top quality spiders
5" Edge wound Aluminum voice coil
Dual top quality spiders
205 Oz Ceramic
Audio Loudspeakers General Specifications
Nominal Diameter: 541 mm/ 21 inch
Rated Impedance:8 OHM
Sensitivity: 100 dB
Frequency Range: 25 Hz - 1800 Hz
Peak Power: 1500 W
RMS Power: 3000 W
Voice Coil Diameter: 125mm/ 5 inch
Voice Coil Material: ALR
Number of layers: Outside
Cone Material: No pressed pulp
Surround Material: Polycotton
Surround Design: M– roll
Basket Materials: Aluminum
Magnet Materials: 205 oz Ceramic
Stage Speaker T/S Parameters
Resonance Frequency: 34HZ
Qes: 0.248
Qms: 9.000
Qts: 0.242
Sd: 175.716 cm²
Mms: 235.792g
BL Strength Factor: 33.490T.M.
Mounting Information:
Overall Diameter:541mm/21inch
Baffle Cutout Diameter: 515mm/20.27inch
Bolt Circle Diameter: 493mm/19.4 inch
Overall Depth: 243mm/ 9.56inch