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SML-Series 8” Thin Subwoofer

RMS 300 watts Dual 2 or 4 ohm voice coils Black Aluminum 2.25” voice coil former for superior heat dissipation High temperature 4-layer copper voice coil wire Stitched-on “Mini-XL” tinsel Leads to prevent fatigue and failure Vented pole-piece and vented magnetic gap Dual-magnet design for smooth acoustic response Custom tooled cone shape for reduced mechanical noise over high excursion Bolt-through motor design to ensure maximum longevity and ruggedness The SML series is a revolutionary line of subwoofers offered by Sundown Audio. An inch shallower than our SLD series, it delivers nearly the excursion, making it an ideal choice for customers seeking an extremely shallow driver with deep bass. Designed to fit under or behind your seat, the SML series performs exceptionally well in small enclosures.Specifications T/S SPECSSML 8" D2SML 8" D4RE (Ohms)3.656.85FS (Hz)40.03843.25VAS (L)8.0287.246Qes0.4250.512Qms2.752.796Qts0.3680.432BL (NA)16.63421.266Mms (Grams)128.033124.288Cms (uM/N)123.416108.954Sens (dB @ 1w/1m)82.8dB82.5dBXmax14mm14mm Enclosure Specifications SML 8"Sealed Enclosure0.2-0.35 ft^3Displacement0.08cuftCutout7.65"Outer Diameter 8.5"Mounting Depth3.78”Physical DimensionsDownload

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Specifications

rms watts

400 W

impedance ohms

4 Ω

voice coil config

DVC

Thiele-Small Parameters

Measured at small signal levels per AES standards

Impedance:

Electromechanical

F_s(Resonant frequency)

43.25 Hz

R_e(DC resistance)

6.85 Ω

BL(Force factor)

21.27 T·m

Q Factors

Q_ts(Total Q)

0.432

Q_es(Electrical Q)

0.512

Q_ms(Mechanical Q)

2.8

Compliance & Mass

V_as(Equiv. volume)

7.25 L

M_ms(Moving mass)

124.3 g

C_ms(Compliance)

0.109 mm/N

Excursion

X_max(Linear excursion)

14 mm

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

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Compare Prices(3 retailers)

Sparked InnovationsBest Price

Available

$189.99

Updated 6/23/2026

Sparked InnovationsBest Price

Available

$189.99

Updated 6/21/2026

Down4SoundBest Price

Available

$189.99

Updated 6/22/2026

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Frequently Asked Questions

What is the Sundown Audio SML-Series 8” Thin Subwoofer?

The Sundown Audio SML-Series 8” Thin Subwoofer is a car audio equipment made by Sundown Audio. View full specifications and where to buy on this page.

How much does the Sundown Audio SML-Series 8” Thin Subwoofer cost?

The Sundown Audio SML-Series 8” Thin Subwoofer typically sells for around $190 depending on the retailer and variant. Check the "Where to Buy" section for current pricing from authorized dealers.

Where can I buy the Sundown Audio SML-Series 8” Thin Subwoofer?

You can purchase the Sundown Audio SML-Series 8” Thin 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.