18 inch long throw dj bass professional line array harga passive neodymium subwoofer for empty speaker box 18" 

ITEM:B1318N100

General Specifications 
 Nominal diameter:460MM/18 inch 
Nominal impedance:8 ohm 
Nominal Power Handling: 800W 
Continuous Power Handling:1600W 
Sensitivity 1W/1M :98 dB 
 Frequency range: 45 - 1500 Hz 
voice coil diameter: 100mm/4 inch 
Winding Material :Copper 
Magnet : Neodymium Ring 
Thiele & Small Parameters 
Fs (Resonance Frequency ):38Hz 
Re (DC Resistance):5.4ohm 
Qms(Mechanical Factor ):5.6 
Qes(Electrical Factor ):0.389 
Qts(Total Factor ):0.421 
Vas(Equivalent Cas Air Load):138L 
Mms(Effective Moving Mass):250gr 
Bl(BL Factor ):20.18T.m 
Sd(Effettive Piston Area ):1210cm² 
Mounting & Shipping Information 
 Overall Diameter :460mm 
Bolt circle Diameter :440mm 
Baffle Cutout Diameter:420mm 
Depth:220mm 
Net Weight:10.5kg Shipping Weight:12kg