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By certification 
Products specification
Model no.: SD-21006A
Size:21"
Rated Power: 1200W
Peak Power:2400W
Impedance:8 Ohm
DC Impedance: 5.4 Ohm
Sensitivity:97dB
Frequency Response:28hz-2khz
Voice Coil Diameter: 4 Inch
Voice Coil Wire Material: Copper
Bobbin Material: Fiber Glass
Voice Coil Layers: inside and outside each 1 layer
Dampers: one
Cone: Paper
Magnet Size:123 OZ
Mounting Detail:
Outer diameter:544mm/21"
Hole Cut Out diameter:504mm/19.84"
Depth:238mm/9.37"
Packing Information:
1pc one carton,Website:://.soundsingpro.com, brown inner and outer box
Carton Size: 58*58*31CM
Other Information
Place of Original: Guangzhou, China
Payment Terms: T/T, Western Union, Money Gram
Port of Delivery: Huangpu, Guangzhou, China
Production Lead Time:30days after receive 30% T/T
Model no.: SD-21006A
Size:21"
Rated Power: 1200W
Peak Power:2400W
Impedance:8 Ohm
DC Impedance: 5.4 Ohm
Sensitivity:97dB
Frequency Response:28hz-2khz
Voice Coil Diameter: 4 Inch
Voice Coil Wire Material: Copper
Bobbin Material: Fiber Glass
Voice Coil Layers: inside and outside each 1 layer
Dampers: one
Cone: Paper
Magnet Size:123 OZ
Mounting Detail:
Outer diameter:544mm/21"
Hole Cut Out diameter:504mm/19.84"
Depth:238mm/9.37"
Packing Information:
1pc one carton,Website:://.soundsingpro.com, brown inner and outer box
Carton Size: 58*58*31CM
Other Information
Place of Original: Guangzhou, China
Payment Terms: T/T, Western Union, Money Gram
Port of Delivery: Huangpu, Guangzhou, China
Production Lead Time:30days after receive 30% T/T
