18” Woofer, 3” voice coil, 600 W, 99 dB

 

18B500-new_copy

KEY FEATURES:

  • 99 db 1W / 1m average sensitivity
  • 77 mm high temperature sandwich voice coil
  • 1200 W AES program power
  • Powerful, vented 220 mm magnet structure
  • Silicone spider

 

Application : Power bass

The 18B500 loudspeaker are intended for high level, high power low frequency reproduction in ported enclosures. It feature vented die cast frame, 220 mm magnet structure, 3 inch voice coil and double spider assembly. This results in an very high sensitivity bass transducer for high power subwoofer application.

 

SPECIFICATIONS

Nominal Diameter
Impedance
Minimum Impedance
Power Capacity AES ¹
Program Power ²
Sensitivity
Frequency Range
Voice Coil Diameter
Voice Coil Material
Voice Coil Former
V. C. Winding Depth
Magnet Gap Depth
Cone Material
Basket
Magnet
Flux Density

18"/461 inch/mm
8 Ohm
6.38 Ohm
600 W
1200 W
(50 - 200 Hz) 99 dB/W/m
35 - 1000 Hz
77 mm
Copper
Glassfiber
23 mm
11 mm
Paper
Die cast aluminium
Ferrite
1.27 T

THIELE-SMALL PARAMETERS

Fs
Qms
Qes
Qts
Vas
Mms
Re
Sd
Xmax*
Cms
BL 
Le at 1kHz 

34.90 Hz
9.24
0.284
0.275
243.91 Litress
146.79 grams
5.10 Ohms
1110 cm2
± 8.75 mm
0.142 mm/N
24.06 T.m
1.37 mH

1. AES standard. Power is calculated on rated minimum impedance. Measurement is in 180 L box enclosure tuned 43 Hz using a 40-400 Hz band limited pink noise test signal applied continuously for 2 hours.
2. Program power is defined as 3db greater than AES Power Capacity.

* Linear Mathematical Xmax is calculated as: (Hvc - Hg)/2 + Hg/4 where Hvc is the voice coil depth and Hg is the gap depth.

MOUNTING INFORMATION

Overall Diameter
Baffle Hole Diameter
Mounting Holes
Bolt Circle Diameter
Overall Depth
Net Weight

461 mm
417 mm
8 eliptic 7 x 8,5 mm
438/441 mm
202.4 mm
12.30 kg

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