18 Inch Sound PRO Audio Speaker Woofer for Cabinet Dual Magnet Speaker

• Customization: Available
• Cone: Paper
• WORD nChannels: Optional
• Model NO.: HDW-18685
• Sensitivity: 97 dB
• Voice Coil Diameter: 100mm / 4 Inch
• Voice Coil Material: Copper
• Basket: Cast Aluminium
• Frequency Range: 33.4-1.8K Hz
• Type: Subwoofer
• Magnet: 220*2 Ferrite
• Category: Speaker
• Transducer Principle: Permanent Magnetic Speaker
• Radiation Mode: Indirect Radiation Type
• Transmission Mode: Electrical
• Style: None
• Brand: ODM & OEM
• Transport Package: by Carton or as Your Requirement
• Specification: Net Weight: 18.85KG
• Trademark: OEM and ODM are both welcome
• Origin: China
• HS Code: 851829000
• Production Capacity: 4000pieces/Month

Product Description

18 inch sound pro audio speaker woofer  for cabinet dual magnet speaker

Product main features:
- 18 inch PA speaker
- Ideal for subwoofer
- 900W RMS, 98dB
- 4 inch voice coil, 220mm dual magnets   
- Subwoofer is ideal for high quality professional bass reflex and bass horn systems

General Specifications
Nominal Diameter	460/18	mm/inch
Rated Impedance	8	ohm
Nominal Power handling	900	Watts
Program Power	1800	Watts
Sensitivity(lw/lm)	97	dB
Frequency Range	33.4-1.8K	Hz
Minimum Impedance(Zmin)	5.6	ohm
Voice Coil Diameter	100/4	mm/inch
Voice Coil Material	copper
Number of layers	2
Magnet gap depth	14	mm
Surround Shape	W-roll
Basket	Cast Aluminum
Magnet	220*2 Ferrite
Mounting Information
Overall Diameter	469	mm
Bolt Circle Diameter	448	mm
Baffle Cutout Diameter	424	mm
Overall Depth	236	mm
Net Weight	18.85	kg
Shipping weight	20.1	kg
Shipping Box	490*490*260	mm

Thiele-Small Parameters
Resonance frequency	33.4	35.5	Hz
DC resistance	5.6	5.6	ohm
Mechanical factor	9.89	4.99
Electrical factor	0.44	0.41
Total factor	0.42	0.38
Mechanical compliance	0.09	0.06	mm/N
Mechanical resistance	5.5	15.6	mech-ohm
of suspension losses
Effective Moving Mass	261.4	349.2	gr
Half-space efficiency	1.43	1.21	%
BL Factor	26.5	32.6	T.m
Equivalent Cas air load	173.9	115.2	liters
Voice-coil inductance	1.1	1.2	mH

INTRODUCTION
Hengda Audio is a professinal speaker manufacturer with experience in the PA speaker field for 10years. We make  different tranducers, compression drivers. We not only provide goods but technology. OEM and ODM are both welcome.