Description The 18FIND is a high efficiency, (98 dB 1watt / 1 meter) 18-inch woofer with incredibly linear frequency response characteristics, high power handling capability while generating low harmonic distortion artifacts. The 18FIND uses a lightweight glass fiber loaded cone assembly along with a high excursion triple roll constant geometry surround. This combination provides remarkable strength, high efficiency and a peak to peak maximum excursion of 50mm (2in). Ideal for high power subwoofers, with band pass or port loaded enclosure designs. Power Handling 2000w At the core of the 18FIND is it’s voice coil technology featuring a composite Polyimide former material capable of withstanding peak temperatures in excess of 250C, well beyond the thermal requirements of modern professional audio systems. REDCATT has implemented a silicone spider design to ensure long term shape memory, consistency and diminish anomalies associated with spider deterioration. GENERAL SPECIFICATIONS: Nominal Diameter – 460 mm (18 in.) Rated Impedance – 8 ohm Power Handling: AES Power – 1,000 watts PROGRAM Power – 2,000 watts PEAK Power – 4,000 watts Power Compression @ -10dB – 0.7 dB @ 0dB – 1.5 dB @ Max. Power – 2.2 dB Max. Recommended X-OVER Freq. – 500 Hz Recommended Enclosure Volume – 150 – 350 Liters Cone Design / Cone Material – Strght. Gmtry, REDCATT Pulp Voice Coil Diameter / Winding – 4″ Voice coil Winding Height – 23.7 mm Front Plate Thickness – 12 mm T/S Parameters: Fs – 34 Hz Re – 5.17 Ohm Sd – 1257 cm2 (195 in.2) Qms – 8.9 Qes – 0.45 Qts – 0.43 Vas – 235 Liters Mms – 203 g Bl product (Force Factor) – 22.5 Tm Peak To Peak Displacement – 25 mm Le (mH @ 1kHz) – 1.6 Mechanical Parameters: Overall Diameter – 467.9 mm (18.42 in.) No. Of Mounting Holes – 8 Bolt Circle Diameter – 442 mm (17.4 in.) Front Mount Baffle cutout – 428 mm (16.85 in.) Nominal Rear Mount Baffle cutout – 430 mm (16.92 in.) Nominal Total Depth – 204 mm (8.03 in.) Flange and gasket thickness – 22 mm (0.86 in.) Packaging info: Net Weight – 13.3 kg
