21 Inch Speaker Low Frequency PRO Audio Neodymium 21′′ Subwoofer OEM

• Activity: Active/Passive
• Operation Mode: None
• Speaker System: None
• Speaker Material: None
• Application: Stage/Outdoor/Party
• Certification: CE, RoHS, EMC
• Model NO.: T21DS115-KS21
• Monitor: None
• Product Name: 21 Inch Subwoofer
• Nominal Diameter: 530mm/21.0inch
• Rated Impedance: 8 Ohm
• AES Power: 1700W
• Peak Power: 3400W
• Frequency Range: 29-1000 Hz
• Sensitivity: 97 dB
• Ebp: 120 Hz
• Magnet Material: Neodymium Inside Slug
• Voice Coil Diameter: 115 mm/ 4.5 in
• Winding Material: Aluminium
• Winding Depth: 36mm/1.42inch
• Lxwxh: 21.6*21.6*10.1 in
• N.W.(1PC): 15.0kgs
• Customized: 2/4/8 Ohm
• Transport Package: Rigid Double Corrugated Shipping Carton
• Trademark: OEM/ODM
• Origin: Guangdong, China
• Production Capacity: 20000pieces/ Per Month

Product Description

21 inch Speaker Low Frequency Pro Audio Neodymium 21'' Subwoofer OEM

Applicable use

Use for pro DJ speakers, pro PA speakers, pro karaoke speakers, live sound speakers, fixed installation speakers, studio monitors and home audio speakers.

Product Paramenters

TYPE	ND SUBWOOFER
Nominal Diameter	530/21	mm/in
Rated impedance	8	ohm
Minimum Impedance	6.7	ohm
AES Power Handing	1700	Watts
Peak Power Handing	3400	Watts
Sensitivity	97	dB
Frequency Range	29-1000	Hz
Voice Coil Diameter	115/4.5	mm/in
Winding Material	Aluminium
Former Material	Glass Fibre
Winding Depth	36/1.42	mm/in
Megnetic Gap Depth	14/0.55	mm/in
Megnetic Material	Neodymium Inside Slug

THIELE & SMALL PARAMETERS
Resonance frequency	Fs	29	Hz
Dc resistance	Re	4.4	ohm
Mechanical factor	Qms	10
Electrical factor	Qes	0.24
Total factor	Qts	0.23
BL factor	Bl	35.6	T.M
Effective Moving mass	Mms	384	g
Effective Cas air load	Vas	304	liters
Effective piston area	Sd	1680	cm2
Inductance	Le	4.2	mh
Max linear excursion	Xmax	±15	mm
	EBP	120	Hz

 

MOUNTING AND SHIPPING
Overall Diameter	550/21.6	mm/in
Bolt Circle Diameter	528/20.7	mm/in
Mount Baffle Cut-out	506/19.9	mm/in
Speaker Depth	257/10.1	mm/in
Flange And Gasket Thickness	15/0.59	mm/in
N.W.(1pc)	15.0	kg
G.W. (1 pcs)	20.9	kg
Shipping Size (1pcs)	640x610x350 mm	25.2x24.0x13.7  in

 

Details Images

Welcome to CONTACT US
 

Company Introduction

 

Why choose us

Have a product development and design team
Our R&D personnel have 20 years of design and development experience
Development assistance software: FINEMOTER, LMS, CLIO, COMSOL

TJ Audio Speakers is favored and recognized by customers for its high-quality products and beautiful prices. We look forward to receiving your inquiries!

Customer Case

 

 

 

 

 

 

 

FAQ

Q1: How can I get sample?
A: If you need a sample test, please contact us. We will make it according to your requirements. But you may need to pay the sample fee and its shipping fee.

 

Q2: How much is the shipping cost for samples?
A: Different sample have different weights and packaging sizes. Please contact us for details.
 

Q3: Can I print my logo on the product and packaging?
A: Of course you can. Just need you to send us your logo design and authorization documents, we will make it on the product and packaging according to your request for your confirmation.
 

Q4: Can you produce according to customer's design?
A: Yes. We mainly do OEM/ODM services.
 

Q5: How are your products packaged?
A: Generally, we pack in white boxes and brown cartons.
 

Q6: How to strictly control the quality of products?
A: We have strict quality control on products from raw materials to production process, and all products are tested before leaving the factory.

Packing&Shipping

Packing:

1)Neutral Packing 2)Strong Carton 3)Reinforce the edge with hard paper 4)Put into another shipping carton

Shipping:

1)Ocean Transport 2)Air Transport 3)Rail Transport 4)Road Transport 5)International Express