Heavy Duty Powered Speaker 4400 Watt PRO Audio 21′ ′ Neodymium Subwoofer

• Noise: 0
• Activity: Passive
• Operation Mode: No
• Shipping Cost: Estimated freight per unit.: about shipping cost and estimated delivery time.
• Currency: US$
• Return&refunds: You can apply for a refund up to 30 days after receipt of the products.
• Model NO.: 21NDS151U1
• Speaker Material: Plastic
• Application: Stage
• Certification: CE, RoHS, FCC
• AES Power Rating: 2200 W
• Program Power: 4400 W
• Voice Coil: 6′′vc Copper in/out
• Frequency Range: 29-1000Hz
• Sensitivity: 97 dB
• Impedance: 8 Ohm
• Magnet: Neodymium
• Chassis: Aluminium
• Transport Package: Carton
• Specification: 570 x 570 x 307 mm
• Trademark: CI
• Origin: China
• HS Code: 8518290000
• Production Capacity: 50000
• Package Size: 62.00cm * 62.00cm * 36.00cm
• Package Gross Weight: 30.000kg

Product Description

Heavy Duty Powered Speaker 4400 Watt  PRO Audio 21'' Neodymium Subwoofer 

 

 

• 6 INCH COPPER VOICE COIL
• 97 dB/SPL SENSITIVITY
• 4400 WATT PROGRAM POWER HANDING
• FEM OPTIMIZED MOTOR AND SUSPENSIONS
• 53mm PEAK TO PEAK MAXIMUM EXCURSION
• OPTIMIZED COOLING SYSTEM
• ALUMINIUM DEMODULATING RING
• DOUBLE SPIDER
• RESONANCE FREE AND HEAVY DUTY BASKET DESIGN
• TRIPLE ROLL SURROUND

GENERAL SPECIFICATIONS

Nominal diameter	mm (in.)	548(21)
Nominal impedance	Ω	4
Minimum impedance	Ω	4.5
Program power (1)	W	4400
AES Power rating(2)	W	2200
Sensitivity (3)	dB	97
Frequency range	Hz	29 ~ 1000
Voice coil diameter	mm (in.)	151(6)
Chassis material	Aluminium
Magnet material	Neodymium
Magnet dimensions (ODxIDxh)	mm	145 x 60 x 10
Coil material	SV
Former material	Glass Fiber
Xmax(4)	mm	15.8
Xmech(5)	mm	26.5
Gap height	mm	17
Voice coil Wingding height	mm	40

SMALL SIGNAL PARAMETERS
 

DC resistance	Re	Ohm	3.6
Resonance frequency	Fs	Hz	29
Moving mass	Mms	g	407
Compliance	Cms	mm/N	0.07
Force factor	BL	N/A	32
Mechanical Q-factor	Qms		5.8
Electrical Q-factor	Qes		0.35
Total Q-factor	Qts		0.33
Equivalent air volume	Vas	I	371
Voice coil Inductance	Le	mH	3.2
Diaphragm area	Sd	cm²	1750
Reference efficiency	Eta 0	%	2.9

SHIPPING INFORMATION

Net weight	Kg	22.1
Multipack size (1) (W x D x H)	mm	570 x 570 x 307
Multipack weight	Kg	24.6

 

Quality Assurance

 Since the raw material sent in untill the speaker sent out, every aspect of them will be fully checked.

We have many advanced test equipments to measure the quality of products. No defectives will be send out.

Our company have a nice quality control managing system(QC) that have strict management of products and staffs.

 

FAQ
1.Q: Are you a factory or trading company?
A: We are a manufacturer with our own factory ,we have more than 15 years experience.


2.Q: Can you do OEM and ODM?
A: Yes, both. We can put your idea into products.

3. How many days do you need to prepare the goods?
We need about 20-25 working days for large order.