Illuminator 6.5" Midwoofer
ScanSpeak
Type Number:18WU/4741T00

Features

The 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.

Driver Highlights: Neo magnet, Under hung motor system, exceptionally long linear stroke

Specs

Electrical Data
Nominal Impedance Zn 4 ohm
Minimum Impedance Zmin 4.5 ohm
Maximum Impedance Zo 37.8 ohm
DC Resistance Re 3.2 ohm
Voice Coil Inductance Le 0.5 mH
TS Parameters
Resonance Frequency fs 30 Hz
Mechanical Q factor QMS 3.56
Electrical Q factor QES 0.32
Total Q factor Qts 0.29
Force Factor Bl 6 Tm
Mechanical Resistance Rms 1 Kg/s
Moving Mass Mms 18.9 g
Suspension Compliance Cms 1.49 mm/N
Effective Piston Area sd 154 cm^2
Equivalent Volume Vas 49.9 ltrs
Sensitivity 2.83V/1m 87.2 dB
Power Handling
100h RMS noise test IEC 80 W
Long-term Max Power IEC 18.3 150 W
Short Term Max power IEC 18.2 200 ohm
Voice Coil and Magnet Parameters
Voice Coil Diameter 42 mm
Voice Coil Height 8 mm
Voice Coil Layers 4
Height of the Gap 20 mm
Linear Excursion +/- 6 mm
Max mech. excursion +/- 16 mm
Diameter of Magnet 90 mm
Height of Magnet 4 mm
Weight of Magnet .13 Kg

Frequency

Mechanical Dimensions