LF Cast Chassis / Ferrite

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CF18VJD

CF18VJD
CF18VJD

Features

  • 18" ferrite magnet, cast aluminium chassis LF driver delivering 1600Wrms (AES Standard) power handling and 97dB sensitivity
  • 5" high temperature, dual layer, Inside/Outside voice coil for higher efficiency, preventing sensitivity loss through thermal compression
  • FEA optimized magnet assembly delivers highly symmetrical cone - movement, leading to exceptionally low harmonic distortion
  • Vented front plate increases airflow to provide enhanced cooling
  • Twin demodulation rings reduce flux modulation, minimizing electromagnetic distortion
  • Double suspension and "multi-roll" surround provide exceptional linearity at extremes of cone excursion

8Ω Frequency Response

Product Graph
  1. 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.
  2. Measured on axis at 1W, 1m in 2π anechoic environment.
  3. Xmax derived from: (voice coil winding width-gap depth)/2.

General Specifications

Nominal diameter
460mm/18in
Power rating1
1600Wrms
Nominal impedance
Sensitivity2
97dB
Frequency range
25Hz-1500Hz
Voice coil diameter
125mm/5in
Chassis type
Cast aluminium
Magnet type
Ferrite
Coil material
Round copper
Former material
Glass fibre
Cone material
Carbon and Kevlar loaded paper
Surround material
Cloth sealed
Suspension
Double
Xmax3
9mm/0.35in
Gap depth
12mm/0.47in
Voice coil winding width
30mm/1.18in

Small Signal Parameters

D
0.38m/14.96in
Fs
34.3Hz
Mms
259.72g/9.16oz
Mmd
238.11g/8.39oz
Qms
5.152
Qes
0.360
Qts
0.336
Re
5.98Ω
Vas
150.58lt/5.32ft3
BI
30.52Tm
Cms
0.083mm/N
Rms
10.88kg/s
Le (at 1kHz)
1.48mH

Mounting Information

Diameter
462mm/18.19in
Overall depth
233mm/9.17in
Cut-out diameter
416mm/16.38in
Mounting slot dimensions
11mm x 7mm/0.43in x 0.28in
Number of mounting slots
8
Mounting PCD range
432-441mm/17.0-17.36in
Unit weight
23kg/50.6lb