18inch neodymium magnet mega bass outdoor speaker for stage 

ITEM:R1318N115L

General Specifications 

 Nominal diameter:466MM/18 inch 

Nominal impedance:8 ohm 

Nominal Power Handling: 1000W 

Continuous Power Handling:2000W 

Sensitivity 1W/1M :97 dB 

 Frequency range: 30 - 1600 Hz 

voice coil diameter: 115mm/4.5 inch 

Winding Material :Copper 

Magnet : Neodymium Ring 

Thiele & Small Parameters 

Fs (Resonance Frequency ):30Hz 

Re (DC Resistance):5.4ohm 

Qms(Mechanical Factor ):6.7 

Qes(Electrical Factor ):0.29 

Qts(Total Factor ):0.28 

Vas(Equivalent Cas Air Load):220L 

Mms(Effective Moving Mass):260gr 

Bl(BL Factor ):30.5T.m 

Sd(Effettive Piston Area ):1220cm² 

Mounting & Shipping Information 

 Overall Diameter :466mm 

Bolt circle Diameter :442mm 

Baffle Cutout Diameter:420mm 

Depth:215mm 

Net Weight:12.1kg Shipping Weight:14kg