FC-18W

3800 US $ per pair (with Power supply included)

Contact us to get a quote with shipping at contact@liiaudiohifi.com

Expanding the Boundaries of Full-Range Sound

The Lii Audio FC-18W is a massive 18-inch full-range field coil driver designed for high-fidelity enthusiasts who demand scale, power, and purity. With its 98 dB sensitivity, field coil motor, and 27 Hz resonant frequency, the FC-18W brings commanding authority in the low end while preserving lifelike detail and coherence throughout the mid and upper ranges.

Thanks to its hand-built 50 mm voice coil and 150 mm field coil motor, the FC-18W offers superior transient speed, rich tonal textures, and immersive imaging. Built without the need for a crossover, it maintains a pure, phase-coherent signal path for the most natural sound reproduction possible.

Whether in open baffle, or custom ported enclosure, the FC-18W delivers a breathtakingly full presentation that sets a new benchmark for large full-range drivers.

Key Features

18" Full-Range Field Coil Driver – Combining scale and precision
Wideband Response (27 Hz – 12 kHz) – Deep bass and detailed mids/highs
High Sensitivity (98 dB) – Perfect for low-wattage, high-quality amplifiers
Field Coil Motor (150 mm) – Hand-built for control, speed, and natural tone
50 mm Voice Coil – Robust design for dynamic headroom
No Crossover Required – Pure, phase-coherent sound

Technical Specifications

Resonant Frequency (Fs)
27 Hz

Frequency Response
27 Hz – 12,000 Hz

Vas
873 L

Re (DC Resistance)
6.9 Ω

Sensitivity (SPL)
98 dB (1W/1m)

Qms
6.709

Qes
0.909

Qts
0.732

Sd (Cone Area)
1225.42 cm²

Cms (Compliance)
409.569 µM/N

Mms (Moving Mass)
84.866 g

Mmd (Diaphragm Mass)
160.2 g

Le (Voice Coil Diamete)
50 mm

Nominal Impedance
8 Ω

Max Power
80–100 W

Xmax
5 mm

Bl
10.451 T·m

Magnet Diameter / Material
150 mm / Field Coil

Nominal Diameter
465 mm (18")

Net Weight
15 Kg

Installation Notes

Requires an external DC power supply for field coil excitation
Optimized for open baffle, horn, or high-efficiency enclosures
Built for audiophile systems – delivering unmatched scale, depth, and realism