18 inch high quality subwoofer 

ITEM:R13181007D

General Specifications 

 Nominal diameter:465MM/18 inch 

Nominal impedance:8 ohm 

Nominal Power Handling: 800W 

Continuous Power Handling:1600W 

Sensitivity 1W/1M :96 dB 

 Frequency range: 25 - 2000 Hz 

voice coil diameter: 100mm/4 inch 

Winding Material :Copper 

Magnet : Ferrite ring 

Thiele & Small Parameters

Fs (Resonance Frequency ):28Hz 

Re (DC Resistance):5.1ohm 

Qms(Mechanical Factor ):4.6 

Qes(Electrical Factor ):0.29 

Qts(Total Factor ):0.27 

Vas(Equivalent Cas Air Load):360L 

Mms(Effective Moving Mass):190gr 

Bl(BL Factor ):24.2T.m 

Sd(Effettive Piston Area ):122cm² 

Mounting & Shipping Information 

 Overall Diameter :465mm 

Bolt circle Diameter :442mm 

Baffle Cutout Diameter:421mm 

Depth:210mm 

Net Weight:12.8kg Shipping Weight:14kg