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
DC Resistance Re 3.9 ohm
Voice Coil Inductance Le 0.3 mH
TS Parameters
Resonance Frequency fs 26 Hz
Mechanical Q factor QMS 3.18
Electrical Q factor QES 0.28
Total Q factor Qts 0.25
Force Factor Bl 6.4 Tm
Mechanical Resistance Rms 0.91 Kg/s
Moving Mass Mms 17.4 g
Suspension Compliance Cms 2.08 mm/N
Effective cone diameter D 14 cm
Effective Piston Area sd 153.9 cm^2
Equivalent Volume Vas 69.9 ltrs
Sensitivity 2.83V/1m 92 dB
Power Handling
100h RMS noise test IEC 100 W
Max Linear SPL @ power rms 105 dB/W
Voice Coil and Magnet Parameters
Voice Coil Diameter 42 mm
Voice Coil Height 8 mm
Voice Coil Layers 4
Height of the Gap 26 mm
Linear Excursion +/- 9 mm
Max mech. excursion +/- 16 mm

Frequency

Mechanical Dimensions