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CASSA Celestion - FTR18-4080F 600W 8ohm - LF Die Cast Chassis Loudspeaker - Ferrite Altoparlante da 18" con chassis in fusione d'alluminio, magnete in ferrite, bobina da 4", potenza 600Watt, impedenza 8ohm Caratteristiche - 18" ferrite woofer provides 600Wrms 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 - Low frequency response, down to 30Hz - Smart chassis design minimises acoustic distortion - Specially treated weather-resistant cone Specifiche Generali Nominal diameter: 457mm/18in Power rating(1): 600Wrms Continuous power rating(2): 1200W EIA power rating(3): 800W Nominal impedance: 8ohm Sensitivity(4): 97dB Frequency range: 30-3000Hz Voice coil diameter: 100mm/4in Chassis type: Cast Aluminium Magnet type: Ferrite Magnet weight: 3.1kg/110oz Coil material: Round copper Former material: Glass fibre Cone material: Glass loaded paper with weather-resistant impregnation Surround material: Cloth-sealed Suspension: Single Xmax(5): 6mm/0.24in Gap depth: 10mm/0.39in Voice coil winding width: 22mm/0.87in Parametri di Thiele-Small D: 0.38m/14.96in Fs: 32.7Hz Mms: 158.22g/5.58oz Qms: 5.24 Qes: 0.32 Mmd: 136.61g/4.82oz Qts: 0.30 Re: 5.31ohm Vas: 271.99lt/9.6ft3 BI: 23.31Tm Cms: 0.15mm/N Rms: 6.21kg/s Le (at 1kHz): 1.46mH Informazioni di Montaggio Overall diameter: 452mm/17.8in Overall depth: 205mm/8.07in Cut-out diameter: 416mm/16.38in Mounting slot dimensions: 10mm x 7mm/0.39in x 0.27in Number of mounting slots: 8 Mounting PCD range: 429-440mm/16.89-17.32in Unit weight: 9.7kg/21.4lb Note (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)Tested as per the EIA-426-A stan