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CASSA Celestion - CF1830E 700W 8ohm - LF Die Cast Chassis Loudspeaker - Ferrite Altoparlante da 18" con chassis in fusione d'alluminio, magnete in ferrite, bobina da 3", potenza 700Watt, impedenza 8ohm Caratteristiche - 18" ferrite magnet, cast aluminium chassis LF driver delivering 700Wrms (AES Standard) power handling and 94dB sensitivity - 3" high temperature, multi- layer voice coil for greater motor force - FEA optimized magnet assembly delivers highly symmetrical cone - movement, leading to exceptionally low harmonic distortion - Balanced Airflow Venting (BAV) on the front-plate increases airflow to provide enhanced cooling - Dual Magnet Motor (DMM) incorporates a secondary magnet used to increase overal motor force (Bl) without the need for any additional increase in magnet size - "Multi-roll" surround provides exceptional linearity at extremes of cone excursion Speifiche Generali Nominal diameter: 457mm/18in Power rating(1): 700Wrms Nominal impedance: 8ohm Sensitivity(2): 94dB Frequency range: 30-2500Hz Voice coil diameter: 75mm/3in Chassis type: Cast Aluminium Magnet type: Ferrite Coil material: Round Copper Former material: Glass Fibre Cone material: Glass-Reinforced Paper Surround material: Cloth-sealed Suspension: Single Gap depth: 8mm/0.31in Voice coil winding width: 18mm/0.71in Xmax(3): 5mm/0.79in Parametri di Thiele-Small D: 0.38m/14.96in Fs: 40.5Hz Mms: 167.47g/5.91oz Qms: 4.367 Qes: 0.371 Mmd: 145.86g/5.15oz Qts: 0.343 Re: 5.27ohm Vas: 167.92lt/5.93ft3 BI: 24.6Tm Cms: 0.092mm/N Rms: 9.33kg/s Le (at 1kHz): 3.24mH Informazioni di Montaggio Overall diameter: 460mm/18.11in Overall depth: 211.3mm/8.31in Cut-out diameter: 414mm/16.29in Mounting slot dimensions: 9.25x7mm/0.36x0.28in Number of mounting slots: 8 Mounting PCD range: 432-441mm/17.0-17.36in 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)Measu