Celestion CF1840JD 18 1000 Watt Professional Woofer Driver 8 Ohm

Highlights

• 4 high temperature. inside/outside voice coil for higher efficiency. reducing thermal compression
• Multi-roll surround and double spider provides near perfect linearity to the limits of excursion
• FEA optimized magnet assembly and suspension deliver symmetrical cone movement. and low distortion
• Vented magnet assembly increases airflow to provide enhanced cooling
• Twin demodulation rings reduce flux modulation. minimizing electromagnetic distortion

Celestion CF1840JD 18 1000 Watt Professional Woofer Driver 8 Ohm
The CF1840JD 18 woofer. from Celestion’s flagship CF Series. features an advanced. FEA optimized motor for maximum output and symmetrical cone movement. which results in low harmonic distortion. The pole piece also includes two demodulation rings for low electromagnetic distortion and low inductance.

With a 4 inside/outside wound fiberglass voice coil and Balanced Airflow Venting for enhanced heat dissipation. this driver can handle a whopping 1000 watts RMS while practically eliminating thermal compression. Cone movement in kept linear by a multi roll surround and twin spider suspension. With 10 mm of xmax this driver can move impressive amounts of air for fantastic bass response. The lightweight rigid Kevlar loaded paper cone ensures tight. accurate. and extremely efficient response.
Product Specifications

• Nominal Diameter:18
• Power Handling (RMS):1.000 Watts
• Impedance:8 ohms
• Frequency Response:30 to 2.500 Hz
• Sensitivity:98 dB 1W/1m
• Voice Coil Diameter:4
• Magnet Weight:112 oz.

Thiele-Small Parameters

• Resonant Frequency (Fs):44.2 Hz
• DC Resistance (Re):5.29 ohms
• Voice Coil Inductance (Le):0.96 mH
• Mechanical Q (Qms):4.21
• Electromagnetic Q (Qes):0.496
• Total Q (Qts):0.444
• Compliance Equivalent Volume (Vas):4.02 ft.3
• Mechanical Compliance of Suspension (Cms):4.02 mm/N
• BL Product (BL):24.75 Tm
• Diaphragm Mass Inc. Airload (Mms):215g
• Maximum Linear Excursion (Xmax):10 mm
• Surface Area of Cone (Sd):1128 cm2

Materials of Construction

• Cone Material:Paper / Kevlar
• Surround Material:Cloth
• Voice Coil Wire Material:Copper
• Voice Coil Former:Fiberglass
• Basket / Frame Material:Cast Aluminum
• Magnet Material:Ferrite

Mounting Information

• Overall Outside Diameter:18.11
• Baffle Cutout Diameter:16.24
• Depth:8.68
• Bolt Circle Diameter:17.25
• # Mounting Holes:8

Optimum Cabinet Size (determined using BassBox 6 Pro High Fidelity suggestion)

• Sealed Volume:2.39 ft.3
• Sealed F3:78.8 Hz
• Vented Volume:4.72 ft.3
• Vented F3:41 Hz

Celestion CF1840JD 18 1000 Watt Professional Woofer Driver 8 Ohm

• Brand:Celestion
• Model:CF1840JD
• Part Number:294-2102
• UPC:739894586351
• Product Category:Pro Woofers. Subwoofers & Midrange Speakers
• Unit of Measure:EA
• Weight:29.85 lbs.
• California Prop 65:
  WARNING: Cancer and Reproductive Harm
  www.P65Warings.ca.gov

Celestion CF1840JD 18" Loudspeaker Driver