CF1840H

Celestion
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CF1840H

CF1840H
CF1840H

Features


  • 18" ferrite magnet, cast aluminium chassis LF driver delivering 1000Wrms
    (AES Standard) power handling and 98dB sensitivity
  • 4" high temperature, dual layer, Inside/Outside voice coil for higher efficiency, preventing performance loss through thermal compression
  • Triangulated coil reinforcement increases stiffness with no additional moving mass, thereby increasing sensitivity, while maintaining a long Xmax
  • Finite element analysis optimised magnet assembly delivers remarkably low harmonic distortion and very high motor strength
  • Smart chassis design minimises reflections back onto the cone, significantly reducing acoustic distortion
  • Intelligent heat management in both chassis and magnet assembly design offers increased output level

Frequency Response and Impedance Curves

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. Continuous Power Handling is defined as 3dB greater than the AES rating.
  3. Measured on axis at 1W, 1m in 2π anechoic environment.
  4. Xmax derived from: (voice coil winding width-gap depth)/2.
  5. Small signal parameters measured after unit subjected to pre-conditioning signal.

General Specifications

Nominal diameter
457mm/18in
Power rating1
1000Wrms
Continuous power rating2
2000W
Nominal impedance
Sensitivity3
98dB
Frequency range
30-2500Hz
Voice coil diameter
100mm/4in
Chassis type
Cast aluminium
Magnet type
Ferrite
Magnet weight
3.18kg/112oz
Coil material
Round copper
Former material
Glass fibre
Cone material
Carbon-fibre loaded paper
Surround material
Cloth sealed
Suspension
Single
Xmax4
8mm/0.31in
Gap depth
9.5mm/0.37in
Voice coil winding width
25mm/0.99in

Small Signal Parameters

D
0.38m/14.96in
Fs
37.6Hz
Mms
154.06g/5.44oz
Qms
5.552
Qes
0.385
Qts
0.36
Re
3.07Ω
Vas
211.24lt/7.46ft3
BI
17.05Tm
Cms
0.116mm/N
Rms
6.562kg/s
Le (at 1kHz)
0.24mH

Mounting Information

Overall diameter
460mm/18.11in
Overall depth
220.35mm/8.68in
Cut-out diameter
414mm/16.29in
Mounting slot dimensions
12mm x 7mm/0.43in-0.28in
Number of mounting slots
8
Mounting PCD range
441-433mm/17.36-17.01in
Unit weight
11.6kg/25.5lb

Packed Dimensions & Weight

Single pack size W x D x H
500mm x 500mm x 255mm
/19.7in x 19.7in x 11in
Single pack weight
13kg/28.6lb