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Rockford Fosgate M2D4-12IB Subwoofer

Name: Rockford Fosgate M2D4-12IB Subwoofer
Brand: Rockford Fosgate

The M2D4-12IB Color Optix 12" DVC 4-Ohm infinite baffle subwoofers deliver loud, clear, accurate bass, and light the way for your journey. Customize bright, wide, and limitless lighting via the Color Optix controller and mobile app. Built as Element Ready to withstand Water, Salt, and UV rays. Features interchangeable grille options—stainless-steel or sport inserts—for personalized styling. Integrated Deutsch/Amphenol connections provide industry leading marine plug-and-play connectivity.

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Thiele-Small Parameters

Measured at small signal levels per AES standards

Electromechanical

F_s(Resonant frequency)

38 Hz

R_e(DC resistance)

6.5 Ω

L_e(Inductance)

3.43 mH

Q Factors

Q_ts(Total Q)

0.94

Q_es(Electrical Q)

1.14

Q_ms(Mechanical Q)

5.27

Compliance & Mass

V_as(Equiv. volume)

64.2 L

S_d(Piston area)

539 cm²

Excursion

X_max(Linear excursion)

15 mm

Sensitivity

SPL₀(1W/1m)

88 dB

Power Handling

P_e(RMS power)

400 W

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

Where to Buy

Updated 6/21/2026

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Frequently Asked Questions

What is the Rockford Fosgate M2D4-12IB?

The Rockford Fosgate M2D4-12IB is a car audio equipment made by Rockford Fosgate. View full specifications and where to buy on this page.

How much does the Rockford Fosgate M2D4-12IB cost?

The Rockford Fosgate M2D4-12IB typically sells for $60 to $745 depending on the retailer and variant. Check the "Where to Buy" section for current pricing from authorized dealers.

Where can I buy the Rockford Fosgate M2D4-12IB?

You can purchase the Rockford Fosgate M2D4-12IB 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.