18 inch outdoor powerful pro audio subwoofer speaker 

ITEM:R1318115G

General Specifications 

 Nominal diameter:463MM/18 inch 

Nominal impedance:8 ohm 

Nominal Power Handling: 1000W 

Continuous Power Handling:2000W 

Sensitivity 1W/1M :96 dB 

 Frequency range: 30 - 1800 Hz 

voice coil diameter: 100mm/4 inch 

Winding Material :Copper 

Magnet : Ferrite ring 

Thiele & Small Parameters 

Fs (Resonance Frequency ):31Hz 

Re (DC Resistance):5.6ohm 

Qms(Mechanical Factor ):7.66 

Qes(Electrical Factor ):0.32 

Qts(Total Factor ):0.31 

Vas(Equivalent Cas Air Load):186L 

Mms(Effective Moving Mass):250gr 

Bl(BL Factor ):30.5T.m 

Sd(Effettive Piston Area ):1235cm² 

Mounting & Shipping Information 

 Overall Diameter :463mm 

Bolt circle Diameter :447mm 

Baffle Cutout Diameter:425mm 

Depth:220mm 

Net Weight:15.8kg Shipping Weight:16.9kg