CF18VJD
18-inch, cast aluminium chassis, ferrite magnet subwoofer
- Airflow vented magnet assembly for dynamic heat dispersion
- Twin demodulation rings
- Longer coil for greater control at high excursion
- Optimised double suspension
Specifications
3200W
Continuous power rating
97dB
Sensitivity
5in
Voice coil diameter
Nominal diameter
457mm / 18in
Power rating
1600W
Continuous power rating
3200W
Rated impedance
8Ω
Sensitivity
97dB
Frequency range
25-1500Hz
Chassis type
Cast aluminium
Magnet type
Ferrite
Magnet weight
4.93kg / 174oz
Voice coil diameter
125mm / 5in
Voice coil material
Round copper
Former material
Glass fibre
Cone material
Carbon and kevlar loaded paper
Surround material
Cloth-sealed
Suspension
Double
Gap height (Hg)
12mm / 0.47in
VC winding height (Hvc)
30mm / 1.18in
Additional impedances
4Ω
Parameters
Sd
1134.12cm2 / 175.79in2
Fs
34.50Hz
Mms
265.42g / 9.36oz
Qms
4.573
Qes
0.332
Qts
0.309
Re
6.13Ω
Vas
145.81l / 5.15ft3
BI
32.59Tm
Cms
0.08mm/N
Rms
12.59kg/s
Le (at 1kHz)
1.87mH
Xmax
12mm / 0.47in
Mounting Information
Overall diameter
462mm / 18.19in
Overall depth
233mm / 9.2in
Cut-out diameter
416mm / 16.38in
Mounting hole dimensions
11x7mm / 0.43x0.28in
Number of mounting holes
8
Mounting hole PCD
432-441mm / 17.0-17.36in
Unit weight
23kg / 50.6lb
Packed Dimensions & Weight
Single pack size W x D x H
500mm x 500mm x 255mm / 19.7in x 19.7in x 10in
Single pack weight
24kg / 52.8lb
Frequency Response and Impedance Curves
Topmost curve: Frequency response on axis | Secondary curve: Frequency response at 45° off axis
Power rating: Tested for two hours using a continuous, band-limited pink noise signal as per AES standard. Power calculated on minimum impedance. Loudspeaker tested in free air.
Continuous power rating: Defined as 3dB greater than the AES rating.
Sensitivity: Measured on axis at 1W, 1m in 2π anechoic environment.
Parameters: Measured after unit subjected to pre-conditioning signal.
Xmax: 0.5*(Hvc-Hg) + 0.25*Hg
