Scanspeak Illuminator 15WU/8741T-00 5.5" Woofer, 8 ohm

Scan-Speak Illuminator 15WU/8741T-00 5.5" Woofer- 149mm- 8 ohm

Spec Sheet PDF

The Illuminator woofers are in every aspect unusual designs with the open construction, the extremely long linear excursion and patented under-hung SD-3 (Symmetrical Drive) neodymium motor system, which due to copper caps and its construction ensures very low distortion, adding the unique patented cones, low-loss linear suspension the result is: ”The Very Best Money Can Buy”!

Low Q, good for small vented box (see below). Would be good for MTM to increase output. 

• Paper cone
• Cast frame
• Neodymium motor
• Underhung voice coil
• long excursion

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.

Madisound recommends:

• Sealed box of 0.15 cubic feet for an F3 of 115Hz
• Vented box of 0.2 cubic feet with 1.5" diameter vent by 6" long for F3 of 60Hz
• Extended bass shelf of 0.3 cubic feet with 1.5" diameter vent by 6" long for F3 of 56Hz.