Celestion CF1840JD 4 Ohm 18″ 1200W Loudspeaker

Celestion CF1840JD 4 Ohm 18″ 1200W Loudspeaker

General Specifications:

• Nominal diameter 18”, 457 mm
• Power rating 1200 W (rms)
• Nominal impedance 4Ω
• Sensitivity 98 dB
• Frequency range 30-2500 Hz
• Voice coil diameter 4”,100mm
• Chassis type Cast Aluminium
• Magnet type Ferrite
• Magnet weight 3.18 kg/112 oz
• Coil material Round Copper
• Former material Glass fibre
• Cone material Kevlar loaded paper
• Surround material Cloth-sealed
• Suspension Double
• Gap depth 0.39”, 10 mm
• Voice coil winding width 1.18”, 30 mm
• Xmax 0.39”, 10mm

Mounting Information:

• Overall diameter 18.11”, 460 mm
• Overall depth 8.68”, 220.35 mm
• Cut-out diameter 16.3”, 414 mm
• Mounting slot dimensions 0.43-0.28”, 11 mm x 7 mm
• Number of mounting slots 8
• Mounting PCD range 17.36-17.01”, 441-432 mm
• Unit weight 11.6 kg/25.5 lb

Small Signal Parameters:

• D 14.96”, 0.38 m
• Fs 44.2 Hz
• Mms 215.15 g/7.59 oz
• Qms 4.21
• Qes 0.496
• Mmd 185.145 g/6.54 oz
• Qts 0.444
• Re 5.29Ω
• Vas 113.924
• BI 24.758 Tm
• Cms 0.063 mm/N
• Rms 13.653 kg/s
• Le (at 1 kHz) 0.96 mH

Key Features: 

• The Celestion CF1840JD is a versatile ferrite magnet subwoofer suitable for reflex, scoop or horn loaded use.
• 18″ ferrite magnet, cast aluminium chassis LF driver delivering 1200 W (AES Standard) power handling and 98 dB sensitivity.
• 4″ high temperature, dual layer, Inside/Outside voice coil for higher efficiency, preventing sensitivity loss through thermal compression.
• FEA optimized magnet assembly and suspension deliver highly symmetrical cone movement, leading to exceptionally low harmonic distortion.
• Vented magnet assembly 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.
• Used by DB to replace the 18TBX100.

Why Choose Lean Business Audio?

50 years of experience of designing, building and supplying Home, Car and Professional Audio.

Huge stocks of leading loudspeakers and audio brands
KEF, Celestion, Eminence, WGS, Montage, BMS Speakers, Faital Pro, Eighteen Sound, Ciare

Low Worldwide shipping rates.
Free Delivery on selected brands with the UK.
Price matching.

For more information please contact us at: +44(0)1473 744089
Or Email us at: sales@lean-business.co.uk