115 South Victory Blvd    •   Burbank CA, 91502     •   Fax: 818-846-1009    •  Hours: Mon-Fri: 10am-6pm     Sat: 10am-3pm  Sun: Closed 
                           
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18WU/8741T-00
 
Quantity in Basket: none
Code: 18WU8741T00
Price: $338.00
Shipping Weight: 3.00 pounds
 
 
 
Quantity:
 

Scan-Speak Illuminator 7" Paper Cone Woofer 18WU/8741T-00

  • Under hung voice coil
  • Neodymium magnet
  • Exceptionally long linear excursion
  • paper cone
  • 8 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.

Electrical Data
Nominal Impedance Zn 8 ohm
DC Resistance Re 5.9 ohm
Voice Coil Inductance Le 0.41 mH
TS Parameters
Resonance Frequency fs 31 Hz
Mechanical Q factor QMS 3.51
Electrical Q factor QES 0.37
Total Q factor Qts 0.33
Force Factor Bl 7.5 Tm
Mechanical Resistance Rms 1 Kg/s
Moving Mass Mms 18 g
Suspension Compliance Cms 1.46 mm/N
Effective Piston Area sd 154 cm^2
Equivalent Volume Vas 49 ltrs
Sensitivity 2.83V/1m 85.4 dB

Power Handling
100h RMS noise test IEC 80 W
Long-Term Max Power IEC 150  W
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



Suggested Alignments:
Sealed box of 0.4 cubic feet for an F3 of 70Hz
Vented box of 0.5 cubic feet with a 2" diameter vent by 8" long for an F3 of 54Hz
Vented box of 0.75 cubic feet with a 2" diameter vent by 8" long for an F3 of 48Hz




    
Speaker City is located at:
 
115 South Victory Blvd, Burbank CA, 91502
Phone: 818-846-9921
Fax: 818-846-1009
New Retail Store Hours
Hours: Mon-Fri 10am-6pm, Sat 10am-3pm, Closed Sun

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Service E-Mail Address
repairs@speakercity.com
 
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