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"State-of-the-art professional PA speakers of the new FH series from IMG Stage Line, with neodymium drives, represent the latest technology of PA speakers. These speakers have been developed with the latest computer technologies and analysing methods and provide an excellent radiation with a very high power capability and a high efficiency at the same time. / High-power professional PA bass speaker, 1,000WMAX, 500WRMS, 8 Ohm / 25cm (10"") speaker with high-performance neodymium drive system / Deformation-resistant, fibre-reinforced and low-resistance paper cone / Heat-resistant 77mm (3"") voice coil wound on the inside and outside / Especially developed thermal management of the drive system for preventing thermal compression and overheating / Waterproof impregnated cone (no coating), thus no series spreading at the moving mass of the voice coil system / Multi-roll surround for excellent linearity / Robust diecast aluminium basket / Impedance (Z): 8 Ohm / Resonant frequency (fs): 60Hz / Max. / Frequency range: f3-4,000Hz / Music power: 1,000WMAX / Power rating (P): 500WRMS / SPL (1W/1m): 96dB / Suspension compl. (Cms): 0.15mm/N / Moving mass (Mms): 47g / Mech. Q factor (Qms): 3.28 / Electr. Q factor (Qes): 0.28 / Total Q factor (Qts): 0.26 / Equivalent volume (Vas): 21.6 l / DC resistance (Re): 5.1 Ohm / Force factor (BxL): 17.9Tm / Voice coil induct. (Le): 0.85mH / Voice coil diameter: 77mm / Voice coil former: glass fibre / Linear excursion (XMAX): plus 7.25mm / Eff. cone area (Sd): 319cm2 / Magnet weight: - / Weight: 3.4kg / "