WOOFER W21EX-001 8 Ohms NOMINAL IMPEDANCE RECOMMENDED FREQUENCY RANGE SHORT TERM MAXIMUM POWER * LONG TERM MAXIMUM POWER* CHARACTERISTIC SENSITIVITY (1W, 1m) OPERATING POWER ( 96 dB SPL ,1 m ) VOICE COIL DIAMETER E 004 30-3000 Hz 250 W 120 W 91,0 dB SPL 3,2 W VOICE COIL HEIGHT AIR GAP HEIGHT LINEAR COIL TRAVEL ( p-p ) 39 18 mm mm 6.0 12,0 mm mm MAXIMUM COIL TRAVEL ( p-p) MAGNETIC GAP FLUX DENSITY MAGNET WEIGHT TOTAL WEIGHT 19 1,0 0,64 2,16 mm T Kg Kg VOICE COIL RESISTANCE VOICE COIL INDUCTANCE (EQUIVALENT) FORCE FACTOR FREE AIR RESONANCE MOVING MASS AIR LOAD MASS IN IEC BAFFLE SUSPENSION COMPLIANCE SUSPENSION MECHANICAL RESISTANCE EFFECTIVE PISTON AREA VAS QMS QES QTS 6,4 Ohms 0.32 mH 8,5 N/A 31 Hz 26 g 2,0 g 1,2 mm/N 2,0 Ns/m 220 sq.cm 63,8 Litres 2,73 0.48 0.41 * IEC 268-5 Response curve recorded in anechoic chamber (Free-field, 4 pi radiation) with 0.5m microphone distance. The loudspeaker is mounted in a closed box of 20 l net. volume The W21EX-001 is an 8" cone driver developed for use as a high fidelity Woofer. Choose it when you want piston-like behavior without resonance, smooth extended frequency response, linearized driving force, and low. SPECIAL FEATURES: Natural rubber surround and a specially treated, hard paper cone which is designed to be very stiff without losing the damping capability of paper and requires no additional coating. Perfectly matched moving parts for a smooth, extended frequency response. Large magnet system for improved sensitivity and transient response. Heavy copper rings mounted above and below the T-shaped pole piece, to reduce non linear and modulation distortion and increase overload margin. Copper plating of the top and bottom plates and a solid copper phase plug, which enhance the performance of the copper rings and improve heat conduction away from the pole piece. Gold plated terminals mounted on a stiff bakelite plate to reduce contact resistance and improve reliability. Stiff and stable injection moulded metal basket to keep the critical components in perfect alignment. OCT. 96 EW 21-002 Distortion on axis in % between 25 and 2000 Hz at operating power.
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