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Sundown Audio SW-M12D2 (Open Box, Great)

4000W Peak (2000W RMS) 12" M Series Dual 2-ohm Subwoofer

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• Peak Power: 4000 watts
• RMS Power: 2000 watts
• Impedance: Dual 2 ohm
• Polypropylene Cone
• High Roll Foam Surround
• Mount depth: 10.88"
• Sensitivity: 80.6 dB

Learn more about the m12d2_obg

We apologize

This item has been discontinued

Description


Sundown Audio brand icon

Authorized dealer

Item Condition - Open Box, Great:

This product works like new, is well-cared-for and in great condition. May show limited signs of wear or use and may be missing non-essential parts, accessories or original packaging.

Sundown Audio M-12 D2 12" (M12D2)

4000W Peak (2000W RMS) 12" M Series Dual 2-ohm Car Subwoofer (SW-M12D2)
Quantity: 1

Product Details:

  • 12" Dual 2 ohm M Series Subwoofer
  • Power Handling:
    • Peak: 4000 watts
    • RMS: 2000 watts
  • Polypropylene Cone
  • High Roll Foam Surround
  • Laser-etched all black backplate design
  • Custom tooled and patented mega roll frames
  • Built for intense bass with stellar low-frequency performance
  • Special M-series magnet boot design
  • Features a hyper-extended pole and extreme clearances
  • 3" High Temperature Aluminum Voice coil
  • 4-layer round wire voice coil on thick aluminum former
  • High-velocity pole vent and a heavily vented magnetic gap
  • Proprietary high-velocity cast-aluminum frame-base venting system
  • Proprietary Sundown PG linear suspension (fully computer optimized)
  • 35 mm Xmax
  • Quad Stacked magnet motor structure
  • Bolt-through motor design to ensure maximum longevity
  • Resonance Frequency (Fs): 32.714 Hz
  • Sensitivity: 80.6 dB
  • Recommended ported box volume: 2.5 cubic feet
  • Top-mount depth: 10.88"
  • Cutout diameter: 11.09"
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty

  • Priced Individually

Subwoofer Wiring Guide


Wiring Guide to Wire 1 Sundown Audio SW-M12D2 (Open Box, Great) Subwoofer

Mono Amp

Mono Amp - Option 1

2 Channel Amp - Bridged

Wiring Guide to Wire 2 Sundown Audio SW-M12D2 (Open Box, Great) Subwoofers

Mono Amp

2 Channel Amp

4 Channel Amp - Bridged

Wiring Guide to Wire 3 Sundown Audio SW-M12D2 (Open Box, Great) Subwoofers

Mono Amp

Mono Amp - Option 1

4 Channel Amp

Wiring Guide to Wire 4 Sundown Audio SW-M12D2 (Open Box, Great) Subwoofers

2 Channel Amp

4 Channel Amp

Specifications & Details


Subwoofer Specifications
Series
M Series
Subwoofer Size
12"
Peak Power Handling
4000 watts
RMS Power Handling
2000 watts
Voice Coil(s)
Dual
Impedance (Per Voice Coil)
2 ohm
Voice Coil Material
Copper
Sensitivity
80.6 dB
Xmax (millimeters)
35 mm
Subwoofer Design
Round / Circle
Main Cone Color
Black
Woofer Composition
Polypropylene
Woofer Surround
High Roll Foam
Magnet Structure
Quad Stacked
Subwoofer Grille
No
Re-Cone Kit Available
No
CTA-2031 Compliant
No
Recommended Enclosure Specifications
Recommended Enclosure Type
Ported / Vented
Optimum Ported Box Volume
2.5 cubic feet
Top-Mount Depth (Mounting Depth)
10.88"
Cutout Diameter
11.09"
Shallow Mount Installation
No
T/S Parameters (Electromechanical)
Free-Air Resonance (Fs)
32.714 Hz
Equivalent Compliance (Vas)
15.06 liters
Total Speaker Q Value (Qts)
0.6
Electrical Q Value (Qes)
0.686
Electrical Resistance of Voice Coil (Re)
4.0669 ohm
Mechanical Q Value (Qms)
4.768
What is in the box?
WITB: Subwoofers
Subwoofer
Warranty and Return Policy
Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Manufacturer

Item Details


Manufacturer:

Model Number:

M12D2_OBG

Weight:

48.00lbs

Internal SKU:

m12d2_obg

Internal Product ID:

224542

Customer Ratings & Reviews


Sundown Audio SW-M12D2 (Open Box, Great) thumbnail image

5 star
100%
4 star
0%
3 star
0%
2 star
0%
1 star
0%



Durability
5
Value
5
Features
5
Design
5
Usability
5

Customer Photos & Videos


Customer Reviews

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The following review is for SW-M12D2, which is a part of the bundle you are viewing.
By Derrick on June 5, 2026 Checkmark Icon Verified purchase


Great Value

The following review is for SW-M12D2, which is a part of the bundle you are viewing.

Excellent speakers at a good price. 2 day shipping and packaging came with no damage. Can’t wait to install.

By Undra on May 30, 2025 Checkmark Icon Verified purchase




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