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21inch PA Woofer PRO Audio Sound System Line Array Customization Subwoofer
PA, Stage & Line-Array Speakers

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

Model: S21WF12509 Customization available Speakers & Audio Systems
US$110.00 – 180.00
MOQ 2 Pieces
Type
Subwoofer
Application
Commercial
Activity
Passive
Cone
Paper
Glue
UK & Tai Wan
Spider
USA Material 2 Spiders with Silicone
Send Inquiry Full specifications

Specifications

Product name21inch PA Woofer PRO Audio Sound System Line Array Customization Subwoofer
CategoryPA, Stage & Line-Array Speakers
CustomizationAvailable
ActivityPassive
ApplicationCommercial
Model NO.S21WF12509
ConePaper
GlueUK & Tai Wan
SpiderUSA Material 2 Spiders with Silicone
MagnetFerrite
TypeSubwoofer
BasketAlu
Transport PackageStrong Carton
SpecificationShipping Weight ( 1 unit) 40kg
OriginGuangzhou
HS Code8518290000
Production Capacity8000
https//ruizhengsound.en.made-in-china.com/product/KBIQVWelnFUt/China-18inch-PRO-Audio-4inch-Voice-Coil-Ferrite-Magnet-Powered-Speaker-Subwoofer.html
PriceUS$110.00-180.00 2 Pieces(MOQ)
SupplierFoshan Ruizheng Audio Co.,Ltd
Data retrieved2026-10-23

Additional data

MODEL S21WF12509
SpecificationsThiele Small Parameters
TYPESubwooferFs30 Hz
Nominal Diameter549 mm/21 inRe5.8 ohm
Rated impedance8 ohmQms7.48
Nominal (AES)11200 WQes0.42
Continuous Program2400 WQts0.40
Sensitivity(1w/1m)297 dBVas323 L
Frequency Range331Hz-1500HzSd0.175 m2
Voice Coil Diameter125 mm/5 inMms347 g
Voice Coil MaterialCopper outside/insideBL31 T.M
Mounting lnformationShipping lnformation
Overall Diameterφ549 mm/φ21.6 inNet Weight ( 1 unit)23.5 kg
Bolt Circle Diameterφ529 mm/φ20.8 inShipping Weight ( 1 unit)27 kg
Mount Baffle Cut-outφ506 mm/φ19.9 inPackage Size ( 1 unit)519x585x313 mm
Depth244 mm/9.6 in
Bolt Hole Diameter8-13.5*10mm/8-0.53*0.39 in

Product description

The supplier lists this product as Subwoofer. Its stated application is Commercial. The listed model is S21WF12509. The specifications below reflect the information publicly displayed on the listing. Model NO.: S21WF12509.

Specifications, options and prices reproduce the supplier's published listing. Please confirm critical parameters with us before ordering.

FAQ

What is the minimum order quantity for 21inch PA Woofer PRO Audio Sound System Line Array Customization?

The listed minimum order quantity is 2 pieces. Tell us your quantity in the inquiry form and we will confirm it with the manufacturer.

How much does 21inch PA Woofer PRO Audio Sound System Line Array Customization cost?

The published price is US$110.00 – 180.00 per piece. Final pricing depends on quantity, options and destination.

Can it be customized with my logo, color or packaging?

Yes — the listing states that customization is available (Available). Describe your requirements in the inquiry.

Where do these specifications come from?

Specifications, options and prices reproduce the manufacturer's published listing on the date shown in the specification table. Please confirm critical parameters before ordering.

Send an inquiry

21inch PA Woofer PRO Audio Sound System Line Array Customization Subwoofer
21inch PA Woofer PRO Audio Sound System Line Array Customization Subwoofer
S21WF12509 · US$110.00 – 180.00 · MOQ 2 Pieces
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