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Fi Car Audio NEO 4.11 18-inch Subwoofer - Dual coil configuration, large magnet structure - Black cast aluminum basket, yellow spider, push terminals

NEO 4.11 18" Subwoofer

Name: NEO 4.11 18" Subwoofer
Brand: Fi Car Audio
Price: 1300 USD

The Fi Car Audio NEO 4.11 18" Subwoofer is a high-performance subwoofer. Designed for deep bass reproduction and high SPL output.

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Thiele-Small Parameters

Measured at small signal levels per AES standards

Electromechanical

F_s(Resonant frequency)

33.4 Hz

R_e(DC resistance)

0.7 Ω

BL(Force factor)

20.4 T·m

Q Factors

Q_ts(Total Q)

0.33

Q_es(Electrical Q)

0.35

Q_ms(Mechanical Q)

8.44

Compliance & Mass

V_as(Equiv. volume)

95.1 L

M_ms(Moving mass)

489 g

S_d(Piston area)

1210 cm²

Excursion

X_max(Linear excursion)

34 mm

Sensitivity

SPL₀(1W/1m)

91.9 dB

Power Handling

P_e(RMS power)

3500 W

Parameters measured per AES2-1984 (r2003) standards. Small-signal parameters valid within linear operating region.

Where to Buy

Updated 6/20/2026

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Frequently Asked Questions

What is the Fi Car Audio NEO 4.11 18" Subwoofer?

The Fi Car Audio NEO 4.11 18" Subwoofer is a car audio equipment made by Fi Car Audio. View full specifications and where to buy on this page.

How much does the Fi Car Audio NEO 4.11 18" Subwoofer cost?

The Fi Car Audio NEO 4.11 18" Subwoofer typically sells for around $1300 depending on the retailer and variant. Check the "Where to Buy" section for current pricing from authorized dealers.

Where can I buy the Fi Car Audio NEO 4.11 18" Subwoofer?

You can purchase the Fi Car Audio NEO 4.11 18" Subwoofer from authorized dealers listed in the "Where to Buy" section on this page. We recommend buying from authorized retailers to ensure warranty coverage and genuine products.