ขายมิดเรนด์ Scan-Speak Illuminator 12MU/4731T 4.5" มือสอง สภาพสวย

Scan-Speak 4.5" Illuminator Midrange 12MU/4731T-00 in 4 ohm

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.

Neodymium magnet
Under hung motor system
One pieces cone and dust cap, full cone technology
Foam surround
The under-hung voice coil is precision wound with CCAW ribbon wire on a titanium bobbin for a low loss yet high power handling design. The vented pole piece has contoured openings to eliminate any hint of turbulence noise. The uniquely shaped top plate and open air frame ensure there is virtually no dynamic compression caused by restriction of the diaphragm back wave.


Nominal Impedance ..............................................4 ohm
DC Resistance (Re) ...............................................3.2 ohm
Voice Coil Inductance (Le) ...................................0.10 mH
Effective Piston Area (Sd) ....................................58 cm2
Voice Coil Diameter ..............................................32 mm
Voice Coil Height ....................................................6.0 mm
Air Gap Height .........................................................13.0 mm
Linear Coil Travel (p-p) ........................................7.0 mm
Maximum excursion (p-p) ....................................10.0 T
Magnet Weight .......................................................0.1 kg
Net Weight ................................................................0.8 kg
Free Air Resonance ..............................................63.2 Hz
Sensitivity (2.83V/1m) ............................................89.1 dB
Mechanical Q-factor (Qms) ...................................3.34
Electrical Q-factor (Qes) ........................................0.31
Total Q-factor (Qts) ..................................................0.29
Moving Mass incl. air (Md) ...................................5.1 g
Force Factor (BL) ..................................................4.6 Tm
Equivalent Volume (Vas) ....................................5.9 l
Compliance (Cms) ................................................1.24 um/N
Mechanical Loss (Rm) ...........................................0.6 kg/s
Rated Power Handling ........................................100 Watt
Overall diameter .....................................................120 mm
Cutout diameter .......................................................101 mm
Flange thickness ......................................................4 mm
Depth ...........................................................................66 mm