Celestion PowerProX18 18" Subwoofer - 8 ohm - Open Box

• PowerProX speakers are built for maximum performance and reliability throughout the lifespan of each speaker
• Dynamic airflow venting delivers class-leading heat management with an average 20C lower voice coil temperature
• Polysiloxane laminated dual suspension provides greater stability and improved cone displacement symmetry
• Aluminium demodulation ring reduces harmonic and intermodulation distortion caused by voice coil displacement
• Double-sided, weatherproof cone coating for moisture protection and enhanced durability
• Nominal diameter : 457mm / 18in
• Power rating : 1200W
• Continuous power rating : 2400W
• Rated impedance : 8Ω
• Sensitivity : 97dB
• Frequency range : 35-1000Hz
• Chassis type : Cast aluminium
• Magnet type : Ferrite
• Voice coil diameter : 100mm / 4in
• Voice coil material : Round copper
• Former material : Glass fibre
• Cone material : Glass loaded cellulose, water-resistant coating front & back
• Surround material : Cloth-sealed
• Suspension : Dual-laminated
• Gap height (Hg) : 11.75mm / 0.46in
• VC winding height (Hvc) : 25mm / 0.98in

Parameters

• Sd : 1210.0cm2 / 187.6in2
• Fs : 34.8Hz
• Mms : 229.98g / 8.1oz
• Qms : 3.147
• Qes : 0.431
• Qts : 0.379
• Re : 5.1Ω
• Vas : 188.9l / 6.67ft3
• BI : 24.38Tm
• Cms : 0.091mm/N
• Le (at 1kHz) : 1.61mH
• Xmax : 9.3mm / 0.37in
• Xmech : 48mm / 1.9in
• Efficiency η0 : 1.8%

Mounting Information

• Overall diameter : 460mm / 18.1in
• Overall depth : 225mm / 8.9in
• Cut-out diameter : 414mm / 16.29in
• Mounting hole dimensions : 11x7mm / 0.43x0.28in
• Number of mounting holes : 8
• Mounting hole PCD : 441-432mm / 17.36-17.31in
• Flange & gasket thickness : 16.2mm / 0.64in
• Power rating : 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 : Defined as 3dB greater than the AES rating.
• Sensitivity : Measured on axis at 1W, 1m in 2π anechoic environment.
• Parameters : Measured after unit subjected to pre-conditioning signal.
• Xmax : 0.5(Hvc-Hg) + 0.25Hg
• Xmech : Maximum peak-to-peak excursion before damage.