CF1840JD
LF Cast Chassis / Ferrite
AxiPeriodic Drivers
- Axi2050
Coaxial/Twin Cone
- FTX0617
- FTX0820
- FTX1025
- FTX1225
- FTX1530
- TFX0512
- TFX0615
- TF1225CX
- K12H-100TC
- K12H-200TC
Compact Array
- AN2075
- AN2775
- AN3510
- AF3010
- AF4010
Compression Drivers / Ferrite
- CDX1-1070
- CDX1-1010
- CDX1-1446
- CDX1-1445
- CDX1-1440
- CDX1-1447
- CDX1-1740
- CDX1-1742
- CDX1-1745
- CDX1-1746
- CDX1-1747
- CDX1-1748
- CDX14-3060
- CDX14-3030
- CDX20-3020
- CDX20-3075
Compression Drivers / Neo
- CDX07-1075
- CDX1-1415
- CDX1-1425
- CDX1-1430
- CDX1-1720
- CDX1-1730
- CDX1-1731
- CDX1-1732
- CDX14-2420
- CDX14-3040
- CDX14-3050
- CDX20-3000
Horns
- H1-7050 'NoBell'
- H1-9040P
- H1SC-8050
- H1SC-9040
LF Cast Chassis / Ferrite
- CF0617M
- CF0820BMB
- CF0820M
- CF1025C
- CF1230F
- CF1540HD
- CF1840H
- CF1840JD
- CF18VJD
- FTR08-2011D
- FTR10-2055D
- FTR12-2565D
- FTR12-3070C
- FTR12-4080DL
- FTR12-4080HDX
- FTR15-3070C
- FTR15-3070E
- FTR15-4080F
- FTR15-4080FD
- FTR15-4080HDX
- FTR18-4080F
- FTR18-4080FD
- FTR18-4080FDX
- FTR18-4080HDX
LF Cast Chassis / Neo
- CN0515M
- CN0617M
- CN1025B
- NTR06-1705B
- NTR06-17X
- NTR06-1705D
- NTR08-2009D
- NTR08-2011D
- NTR10-2520D
- NTR10-2520E
- NTR12-3018D
- NTR15-3018E
- NTR21-5010JD
LF Pressed Chassis / Ferrite
- TF0410MR
- TF0510
- TF0510MR
- TF0615
- TF0615MR
- TF0818
- TF0818MR
- TF1018
- TF1020
- TF1218
- TF1220
- TF1225
- TF1225e
- TF1230
- TF1230SL
- TF1230S
- TF1520
- TF1525
- TF1525e
- TF1530
- TF1530e
- TF1530SL
- TF1830
LF Pressed Chassis / Neo
- TN0820
- TN1020
- TN1225
- TN1230
- TN1530
- Balanced airflow venting provides enhanced coolingÂ
- Twin demodulation rings
- Optimised double suspension
Frequency Response and Impedance Curves
- 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 is defined as 3dB greater than the AES rating
- Measured on axis at 1W, 1m in 2Î anechoic environment.
- Xmax derived from: (voice coil winding width-gap depth)/2.
- Small signal parameters measured after unit subjected to pre-conditioning signal
General Specifications
Nominal diameter
457mm/18in
Power rating1
1200Wrms
Continuous power rating2
2400W
Nominal impedance
8Ω
Sensitivity3
97dB
Frequency range
30-2,500Hz
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
Kevlar loaded paper
Surround material
Cloth-sealed
Suspension
Double
Xmax4
10mm/0.39in
Gap depth
10mm/0.39in
Voice coil winding width
30mm/1.18in
Small Signal Parameters
D
0.38m/14.96in
Fs
37Hz
Mms
217.4g/7.67oz
Qms
4.372
Qes
0.44
Mmd
185.145g/6.54oz
Qts
0.4
Re
5.29Ω
Vas
155l/5.47ft3
BI
24.76Tm
Cms
0.09mm/N
Rms
11.56kg/s
Le (at 1kHz)
1.16mH
Mounting Information
Overall diameter
460mm/18.11in
Overall depth
220.35mm/8.68in
Cut-out diameter
414mm/16.24in
Mounting slot dimensions
11mm x 7mm/0.43-0.28in
Number of mounting slots
8
Mounting PCD range
432-441mm/17-17.36in
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 19.7 x 7.11in
Single pack weight
13kg/28.6lb
Multi pack size W x D x H
1210mm x 1050mm x 1070mm
/47.6in x 41.3in x 42.1in
Multi pack weight
305kg/670lb
