18B35

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18” Woofer, 3.5” voice coil, 700 W, 99 dB

KEY FEATURES:

99 db 1W / 1m average sensitivity
88 mm high temperature sandwich voice coil
1400 W AES program power
Powerful, vented 200 mm magnet structure
Double aluminium demodulating ring for lower distortion and improved heat dissipation
Water protected cone (front)

PART NUMBER: 11118F0708

Application:

The 18B35 bass loudspeaker is specially designed to deliver high impact bass response, with high power capacity. It incorporates an 3.5” sandwich voice coil, paper cone, a powerful vented 200 mm magnetic structure, die cast vented aluminium frame which reduced power compression. The double aluminium demodulating rings on the magnet structure reduce distortion and inductance and improve transient response. The special designed components for low Mms ensure very high definition bass reproduction.

This results in an incredible high efficient transducer for subwoofer applications, with the ability to handle high excursion with low distortion and reduced thermal power compression.

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
5.72 Ohm
700 W
1400 W
(50-200 Hz) 99 dB/W/m
32 - 1000 Hz
88 mm
Cooper Clad Aluminium
Glassfiber
24 mm
12 mm
paper
Die cast aluminium
Ferrite
1.06 T

THIELE-SMALL PARAMETERS

Qms

Qes

Qts

Vas

Mms

Xmax*

Cms

Le at 1kHz

31.76 Hz

8.05

0.337

0.324

333.62 Litres

129.55 grams

4.88 Ohms

1110 cm2

± 9 mm

0.194 mm/N

19.34 T.m

0.61 mH

1. AES standard. Power is calculated on rated minimum impedance. Measurement is in 160 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
195.5 mm
10 kg

RECONE KIT:
RK18B35 - Part No: R1118F0708