Alphard DB 418 D1

Subwoofer 18 inch , VC Size 4 inch

Cone : Paper , Magnet : Ferrite

Voice coil : Copper Clad Aluminum Wire

Surround Material : Foam , Frame : Alu

RMS Power : 3000 W , MAX Power : 6000 W

Impedance : 1+1 / 2+2 Ohm , Mounting Depth : 307 mm

Cut-out dimensions : 429 mm

SPL @ 1w/1m 90 dB , Fs : 29.4 Hz , Cms : 0.02 m/N

Mms : 666.35 g , Qes : 0.51 , Qms : 6.49

Qts:0.42, BL:26.3, Vas: 175 l, Xmax: 32 mm, Bass Reflex Box: 160L

Port Area : 450cm2 , Port Length : 70cm , 30 Hz