Eighteen Sound 18iD

Eighteen Sound 18iD
General Specifications Datasheet
Brand Eighteen Sound
Reference 18iD
Size 18 in
460 mm
Type Low frequency
Impedance Z 2 Ω
Minimum impedance Zmin 2.0 Ω
Nominal Power P 1800 W
Program Power Pmax 3600 W
Sensitivity SPL 95 dB
Usable frequency range 30 - 2500 Hz
Recommended crossover 200 Hz
  • Class D amplifier optimized for maximum power transfer
  • Conforms to Powersoft™ iPal® standards
  • 95 dB SPL 1W / 1m average sensitivity
  • 135mm (5.3") split winding, four layer ISV copper voice coil
  • 3600 W program power handling
  • Triple Silicon Spider (TSS) for improved excursion control
  • Aluminum demodulating ring (SDR) for lower distortion
Eighteen Sound 18iD Frequency response
Eighteen Sound 18iD Impedance
Thiele/Small parameters Values in gray are calculated.
Resonant frequency Fs 40 Hz
Surface area of cone Sd 1130 cm²
DC resistance Re 1.5 Ω
Mechanical Q Qms 5.50
Electromagnetic Q Qes 0.27
Total Q factor Qts 0.26
Mechanical suspension compliance Cms 37 µm/N
Compliance equivalent air volume Vas 67 liters
Moving mass Mmd 398.1 g
Moving mass (including airload) Mms 420 g
Mechanical resistance Rms 19.2 N·s/m
BL product BL 24 T·m
Voice coil inductance Le 1.22 mH
Maximum linear excursion (one way) Xmax 15.5 mm
Maximum mechanical limit (one way) Xlim 35 mm
Efficiency η₀ 1.66 %
Efficiency bandwidth product EBP 148
Effective diaphragm diameter Ø 37.9 cm
Import this driver in a simulation software:
WinISD 18Sound 18iD.wdr
Hornresp 18Sound 18iD.txt
Basta! 18Sound 18iD.bastaelement
Eighteen Sound 18iD Dimensions
Dimensions
Overall diameter 462 mm
Baffle hole diameter 422 mm
Overall depth 236 mm
Flange thickness 26 mm
Net weight 12.5 kg
Materials of construction
Diaphragm material Carbon Fiber reinforced Cellulose
Diaphragm shape Straight
Surround material Heavy Polycotton
Voice Coil Parameters
Voice coil diameter 135 mm
Coil material Copper
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This page may contain errors or inaccuracies. Please check the up-to-date specifications on the manufacturer website before starting your project.

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