21inch PA Woofer PRO Audio Sound System Line Array Customization Subwoofer

• Activity: Passive
• Application: Commercial
• Cone: Paper
• Glue: UK & Tai Wan
• Spider: USA Material 2 Spiders with Silicone
• Magnet: Ferrite
• Model NO.: S21WF12509
• Type: Subwoofer
• Basket: Alu
• Transport Package: Strong Carton
• Specification: Shipping Weight ( 1 unit) 40kg
• Trademark: OEM/ODM
• Origin: Guangzhou
• HS Code: 8518290000
• Production Capacity: 8000

Product Description

Ruizheng Speakers primary line consists of high frequency drivers and coaxial components, and cone drivers. We have made a strong commitment to provide a well-balanced line of Low Frequency drivers that range from 6.5" to 24", as well as a very complete line of High Frequency drivers.   Our engineers have optimized each design with CLIO software to ensure each design operates to its fullest potential time and time again. From nightclubs, to stadiums, to concert halls around the world, our products are chosen based on their reliability, consistency and most of all for their outstanding sound quality.

 

MODEL   S21WF12509
Specifications			Thiele Small Parameters
TYPE	Subwoofer		Fs	30 Hz
Nominal Diameter	549 mm/21 in		Re	5.8 ohm
Rated impedance	8 ohm		Qms	7.48
Nominal (AES)1	1200 W		Qes	0.42
Continuous Program	2400 W		Qts	0.40
Sensitivity(1w/1m)2	97 dB		Vas	323 L
Frequency Range3	31Hz-1500Hz		Sd	0.175 m2
Voice Coil Diameter	125 mm/5 in		Mms	347 g
Voice Coil Material	Copper outside/inside		BL	31 T.M
Mounting lnformation			Shipping   lnformation
Overall Diameter	φ549 mm/φ21.6 in		Net Weight         ( 1 unit)	23.5 kg
Bolt Circle Diameter	φ529 mm/φ20.8 in		Shipping Weight ( 1 unit)	27 kg
Mount Baffle Cut-out	φ506 mm/φ19.9 in		Package Size      ( 1 unit)	519x585x313 mm
Depth	244 mm/9.6 in
Bolt Hole Diameter	8-13.5*10mm/8-0.53*0.39 in

Founded in 2011, ruizheng audio is designing and distributing amplifier, speakers,  supplying OEM/ODM components to many of the professional audio brands in the market today.