8 Ohms NOMINAL IMPEDANCE WOOFER W18E001 TV E 0027-08S RECOMMENDED FREQUENCY RANGE SHORT TERM MAXIMUM POWER * LONG TERM MAXIMUM POWER* CHARACTERISTIC SENSITIVITY (1W, 1m) OPERATING POWER ( 96 dB SPL ,1 m ) 40-2500 Hz 250 W 100 W 86,5 dB SPL 9,0 W VOICE COIL HEIGHT AIR GAP HEIGHT LINEAR COIL TRAVEL ( p-p ) 39 16 mm mm 6.0 10.0 mm mm MAXIMUM COIL TRAVEL ( p-p) MAGNETIC GAP FLUX DENSITY MAGNET WEIGHT TOTAL WEIGHT 19 0,88 0.42 1.75 mm T Kg Kg VOICE COIL DIAMETER 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 6,1 Ohms 0.4 mH 7.2 N/A 31 Hz 15,5 g 1,0 g 1,6 mm/N 1,4 Ns/m 126 sq.cm 37,0 Litres 2,50 0.39 0.34 * 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 12 l net. volume The W18E001 is a 6,5" cone driver developed for use as a high fidelity Woofer or Woofer/Midrange unit. The extremely stiff, yet light cone and the acoustically transparent basket give tremendous bass precision and midrange detail. SPECIAL FEATURES: Precision cast and surface treated magnesium cone coupled to a natural rubber surround showing no sign of midrange (edge) resonances. Magnet system with bumped back plate makes room for extreme coil excursions. 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 glass fibre reinforced plate to reduce contact resistance and improve reliability. Extremely stiff and stable injection moulded metal basket to keep the critical components in perfect alignment. Large windows in the basket both above and below the spider to reduce sound reflexion, air flow noise and cavity resonance to a minimum. JAN. 00 EW 18-401 Distortion on axis in % between 25 and 2000 Hz at operating power.
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