Celestion FTR18-4080FD 1000W 8ohm LF Ferrite

Celestion - FTR18-4080FD 1000W 8ohm - LF Die Cast Chassis Loudspeaker - FerriteFeatures - 18 ferrite woofer provides 1000Wrms power handling (AES Standard) and 97dB sensitivity- 4 high temperature Inside/Outside voice coil efficiently dissipates heat, preventing sensitivity loss through thermal compression- FlexirolTM surround for greater excursion control- Double suspension for exceptional linearity at the highest excursions- Low frequency response, down to 30Hz- Smart chassis design minimises acoustic distortion- Specially treated, weather-resistant coneGeneral SpecificationsNominal diameter: 457mm/18inPower rating(1): 1000WrmsContinuous power rating(2): 2000WNominal impedance: 8ohmSensitivity(3): 97dBFrequency range: 30-2500HzVoice coil diameter: 100mm/4inChassis type: Cast AluminiumMagnet type: FerriteMagnet weight: 3.1kg/110ozCoil material: Round copperFormer material: Glass fibreCone material: Glass loaded paper with weather-resistant impregnationSurround material: Cloth-sealedSuspension: DoubleXmax(4): 6mm/0.24inGap depth: 10mm/0.39inVoice coil winding width: 22mm/0.87inSmall Signal ParametersD: 0.38m/14.96inFs: 26HzMms: 172.42g/6.08ozQms: 4.33Qes: 0.29Mmd: 150.81g/5.32ozQts: 0.27Re: 5.39ohmVas: 395.56lt/13.96ft3BI: 22.88TmCms: 0.22mm/NRms: 6.506kg/sLe (at 1kHz): 1.41mHMounting InformationOverall diameter: 452mm/17.8inOverall depth: 205mm/8.07inCut-out diameter: 416mm/16.38inMounting slot dimensions: 10mm x 7mm/0.39in x 0.27inNumber of mounting slots: 8Mounting PCD range: 429-440mm/16.89-17.32inUnit weight: 9.8kg/21.6lbNote(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 2pi 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.