Scan-Speak 18WU/4741T00

The Scan-Speak  18WU/4741T-00 6.5" Illuminator woofers are based on compact under-hung motor systems with large neodymium ring magnets. The patent pending motor offers a very long linear excursion together with a very high force factor. The top plate is shaped to “guide” the backside airflow around the motor and with the very open cast aluminum chassis design the driver is virtually free from compression.

• Under hung voice coil
• Neodymium magnet
• Exceptionally long linear excursion
• paper cone

Specifications

• power handling (continuous/programme) = 80/150 W
• frequency range = 28-3500 Hz
• resonance frequency fs = 30 Hz
• impedance R = 4 Ohm
• sound pressure level SPL = 87,2 dB (2,83V; 1m)
• DC resistance Re = 3,2 Ohm
• force factor BL = 6 N/A
• voice coil inductance L = 0,5 mH
• effective piston radiating area Sd = 154 cm²
• effective mechanical mass incl. air load mms = 18,9 g
• equivalent volume of compliance Vas = 49,4 l
• total Q factor Qts = 0,29 (Qms=3,56, Qes=0,32)
• voice coil diameter = 42 mm
• maximum peak linear excursion vibration x_lin = +/- 9 mm
• mounting diameter d = 158 mm
• overall diameter d = 184 mm
• mounting depth (not countersunk) t = 105 mm