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Soundsing Audio Manufacturing Co.,Ltd is one of the leading China good price 21 inch speaker manufacturers and suppliers, providing with competitive price 21 inch loudspeaker wholesale, welcome to import high quality products from our factory.
SD-21008A is a competitive price 21 inch loudspeaker with dual top quality dampers, inside and outside copper wire voice coil and thick washer, t-yoke. Bass is good also. If you want high power big size low frequency transducer subwoofer and limited budget ,this one is much suitable. It is our hot selling 21"speaker. Surely we have other smaller power 21 speakers also, such as 4" voice coil 21 inch with different design.
Good Price 21 Inch Speaker Feature
153oz ceramic manget
5" inside and outside voice coil
RMS power reach to 1500w
21 Inch Subwoofer General Specifications
Nominal Diameter: 543 mm/ 21 inch
Rated Impedance:8 OHM
Sensitivity: 98 dB
Frequency Range: 30 Hz - 1600 Hz
Peak Power:.3000 W
RMS Power::1500 W
Voice Coil Diameter: 125/mm/ 5 inch
Voice Coil Material: Copper
Number of layers: Inside/ Outside
Cone Material: No pressed pulp
Surround Material: Polycotton
Surround Design: M – roll
Basket Materials: Alumium
Magnet Materials: 153 oz Ceramic
Outdoor Speaker T/S Parameters
Resonance Frequency: 31HZ
Qes: 0.448
Qms: 8.568
Qts: 0.426
Sd: 187.00 cm²
Mms: 307.629g
BL Strength Factor: 27.638T.M.
Mounting Information:
Overall Diameter: 543mm/21inch
Baffle Cutout Diameter:500mm/19.68
Bolt Circle Diameter: 515mm/20.27 inch
Overall Depth: 48mm/ 1.89inch