Garage
Shop

See all parts that fit your 2002 Sierra 1500

Sundown Audio SW-M12D1 (Open Box, Like New)

4000W Peak (2000W RMS) 12" M Series Dual 1-ohm Subwoofer

highlight-star-icon

• Peak Power: 4000 watts
• RMS Power: 2000 watts
• Impedance: Dual 1 ohm
• Polypropylene Cone
• High Roll Foam Surround
• Mount depth: 10.88"
• Sensitivity: 84.387 dB

Learn more about the m12d1_obn

We apologize

This item has been discontinued

Description


Sundown Audio brand icon

Authorized dealer

Item Condition - Like New (Open Box):

This product works and looks like new. It may have been opened for a visual demo or product video. In some cases there may be signs of an attempt at installation like opened packaging or mounting screw holes used, but there is no real sign of use or wear. Includes all original parts, packaging and accessories (or suitable replacement)

Sundown Audio M-12 D1 12" (M12D1)

4000W Peak (2000W RMS) 12" M Series Dual 1-ohm Car Subwoofer (SW-M12D1)
Quantity: 1

Product Details:

  • 12" Dual 1 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): 31.931 Hz
  • Sensitivity: 84.387 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

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)
1 ohm
Voice Coil Material
Copper
Sensitivity
84.387 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)
31.931 Hz
Equivalent Compliance (Vas)
39.313 liters
Total Speaker Q Value (Qts)
0.606
Electrical Q Value (Qes)
0.696
Electrical Resistance of Voice Coil (Re)
2.22 ohm
Mechanical Q Value (Qms)
4.654
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:

M12D1_OBN

Weight:

48.00lbs

Internal SKU:

m12d1_obn

Internal Product ID:

224911

Customer Ratings & Reviews


Sundown Audio SW-M12D1 (Open Box, Like New) 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

Sort by:

Loading...

Awesome sub!!

The following review is for SW-M12D1, which is a part of the bundle you are viewing.

This subwoofer is an absolute beast! Build quality is top notch. I got it as an open box deal, which i would highly recommend. Saved me almost $200. The sound quality is amazing! It's rated for 2000w rms, I'm running an alpine amp that only pushes 900w rms, and it's still loud AF. Bass is loud, deep, and clean. Sundown has a new customer fore life!

By Joseph on November 1, 2025 Checkmark Icon Verified purchase

1 found this helpful




DB6752FR_BAK82 small

American Bass DB675.2FR with Belva 8 Gauge Amp Kit

500W Peak (220W RMS) DB Series Class-AB 2-Channel Amplifier

(97)

$127.16

List price $187.08

VSP525KIT small

NVX VSP525KIT

750W Peak (250W RMS) 5.25" V-Series 2 Way Component Car Speakers

(27)

$99.99

List price $119.99

Related Searches


Save up to 10 different vehicles in your garage
Vehicle
Store
Delete

2002 GMC Sierra 1500

2014 Kia Rio

1982 Dodge B350

1980 Porsche 928

1998 Dodge Ram 3500

2010 Toyota RAV4

2015 Ford C-Max

2002 MINI Cooper

2017 Dodge Ram ProMaster 2500

1997 Ford Expedition

Add vehicle Clear all vehicles
Where to find vehicle info
Are you sure you want to clear your garage?
This action cannot be undone. Confirm
This page was not designed for products.
If you continue, you will be redirected to a category customized for your vehicle. Continue
Loading...
Identify your vehicle and submodel details
  • Owner's manual
  • Vehicle's insurance card
  • Vehicle registration
  • Vehicle produced after 2005: Inside driver's side door
  • Vehicle produced before 2005: Rear passenger doorjamb, glove box, center console, or engine compartment
Car Info Side Door Icon
Vehicle Registration Icon
Vehicle Insurance Icon

Modern vehicles often require specific brackets, wiring harnesses, and mounting solutions. A fit guide ensures:

  • You see only parts engineered for your exact vehicle
  • You avoid incompatible radios, speakers, or wiring
  • Installation is smoother, faster, and frustration-free
  • You get the correct accessories the first time

Whether you're replacing a factory stereo or upgrading your entire audio system, the Fit Finder eliminates uncertainty.