1.18-inch PA speaker 2. for subwoofer 3.700W RMS,98dB 4.4 inch voice coil,220mm magnet

6.Subwoofer which is ideal for high quality professional bass reflex and bass horn systems

7.Hipower Audio is a professinal speaker factory with experience in the PA speaker field for 8 years. We make our own tranducers ,HF drivers and empty cabinets.

5.Speaker's Details:

General Specifications
Nominal Diameter	460/18	mm/inch
Rated Impedance	8	ohm
Nominal Power handling1	700	Watts
Program Power2	1400	Watts
Sensitivity(lw/lm)3	98	dB
Frequency Range4	39-1.0K	Hz
Minimum Impedance(Zmin)	7.0	ohm
Voice Coil Diameter	100/4	mm/inch
Voice Coil Material	Copper
Voice Coil Winding Depth	23	mm
Number of layers	2(Inside/Outside)
Magnet gap depth	12	mm
Surround Shape	Triple-roll
Basket	CastAluminum
Flux Density	1.1	T
Magnet Material/Mass	Ceramic

Thiele-Small parameters
Resonance frequency	Fs	39	Hz
DC resistance	Re	5.4	ohm
Mechanical factor	Qms	14.2
Electrical factor	Qes	0.41
Total factor	Qts	0.39
Mechanical compliance	Cms	0.10	mm/N
Mechanical resistanceof suspension losses	Rms	2.8	mech-ohm
Effective Moving Mass	Mms	160	gr
Half-space efficiency	Eff	3.0	%
BL Factor	BL	22.9	T.m
Equivalent Cas air load	Vas	207	liters
Effective piston area	Sd	0.1213	m2
Max.linear excursion	Xmax	8	mm
Voice-coil inductance	LelK	1.89	mH

Mounting Information
Overall Diameter	466.5	mm
Bolt Circle Diameter	442	mm
Bolt Hole Diameter	6.5x5.5	mm
Baffle Cutout Diameter	423	mm
Overall Depth	202	mm
Net Weight	12.8	kg

L18/8635 PA speaker subwoofer