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AST-09 AST-09 COMPETITION KEY FEATURES • • • • • • High sensitivity (107 dB) Extended frequency range (2.5 -22 KHz) Aluminium diaphragm Double ferrite magnet Aluminium front cover Designed for the high frequencies reproduction TECHNICAL SPECIFICATIONS Nominal impedance Power handling / maximum Sensitivity Frequency range Recommended crossover frequency Resonant frequency, fs Voice coil diameter Diaphragm material 4 ohms 35 W RMS / 150 W 107 dB 1w @ 1m 2.5 - 22 kHz 5 kHz, 12 dB/oct. 6 kHz 25.8 mm. 1.02 in. Aluminium DIMENSION DRAWINGS MOUNTING INFORMATION Overall diameter Depth Baffle cutout dimensions Bolt circle diameter 89 85 72 80 mm. mm. mm. mm. 3.50 3.35 2.84 3.15 in. in. in. in. RECOMMENDED ATTENUATION -3 dB attenuation CERRADA -6CAJA dB attenuation -9 dB attenuation -12 dB attenuation JA CERRADA R1 (1.2 W) R2 (10 W) R1 (2 W) R2 (4 W) R1 (2.7 W) R2 (2.2 W) R1 (3 W) R2 (1.2 W) Note: these values are calculated for a 4 ohms load impedance. Please do not forget to take into account the applied power when choosing the resistors. FREQUENCY RESPONSE IMPEDANCE CURVE Nota: on axis frequency response measured on anechoic chamber, applying 1w@1m. 056 Polígono Industrial Moncada II · C/. Pont Sec, 1c · 46113 MONCADA - Valencia (Spain) ·Tel. ( 34 ) 96 130 13 75 · Fax ( 34 ) 96 130 15 07 · http://www.beyma.com · E-mail:[email protected]·
