21inch 330mm Magnet Stage Sound PRO Indoor Outdoor Long Throw Speaker Subwoofer

• Activity: Passive
• Application: Commercial
• Cone: Paper
• Glue: UK & Tai Wan
• Spider: USA Material 2 Spiders with Silicone
• Magnet: Ferrite
• Model NO.: S21WF15210
• 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   S21WF15210
Specifications			Thiele Small Parameters
TYPE	Subwoofer		Fs	29 Hz
Nominal Diameter	550 mm/21 in		Re	5.7 ohm
Rated impedance	8 ohm		Qms	7.83
Nominal (AES)	2000 W		Qes	0.29
Continuous Program	4000 W		Qts	0.28
Sensitivity(1w/1m)	96.5 dB		Vas	313 L
Frequency Range	29Hz-800Hz		Sd	0.1735 m2
Voice Coil Diameter	152 mm/6 in		Mms	417 g
Voice Coil Material	Copper out/in		BL	39 T.M
Mounting lnformation			Shipping   lnformation
Overall Diameter	φ570 mm/φ22.4 in		Net Weight         ( 1 unit)	35 kg
Bolt Circle Diameter	φ553 mm/φ21.8 in		Shipping Weight ( 1 unit)	40kg
Mount Baffle Cut-out	φ500 mm/φ19.7 in		Package Size      ( 1 unit)	62x60x36 cm
Depth	243 mm/9.6 in
Bolt Hole Diameter	8-φ7mm/8-φ0.28 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.