21′′ Speaker Professional Audio Line Array System Neodymium 21 Inch Subwoofer

Product Description

Professional Audio System Passive 21 inch Neodymium SubWoofer 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	7.9	ohm
AES Power Handing	2000	Watts
Max Power Handing	4000	Watts
Sensitivity	95	dB
Frequency Range	30-1000	Hz
Voice Coil Diameter	152/6.0	mm/in
Winding Material	Copper
Former Material	Glass Fibre
Winding Depth	32/1.25	mm/in
Megnetic Gap Depth	12/0.47	mm/in
Megnetic Material	Neodymium Inside Slug

THIELE & SMALL PARAMETERS
Resonance frequency	Fs	32	Hz
Dc resistance	Re	6	ohm
Mechanical factor	Qms	9.9
Electrical factor	Qes	0.4
Total factor	Qts	0.38
BL factor	Bl	37.6	T.M
Effective Moving mass	Mms	474	g
Effective Cas air load	Vas	206	liters
Effective piston area	Sd	1680	cm2
Inductance	Le	2	mh
Max linear excursion	Xmax	±13	mm
	EBP	80	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	261/ 10.3	mm/in
Flange And Gasket Thickness	15/ 0.59	mm/in
N.W.(1pc)	18.7/ 41	kg/lbs
G.W. (1 pcs)	24.6/ 54.2	kg
Shipping Size (1pcs)	640x620x350 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

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