Good Price 21 Inch Speaker Low Frequency Transducer

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