Garage
Shop

See all parts that fit your 2015 Cayenne

Sundown Audio SW-SAV218D4 (Open Box, Great)

2500W Peak (1250W RMS) 18" SA Series Dual 4-ohm Subwoofer

Sundown Audio
Shop all Sundown Audio
highlight-star-icon

• Peak Power: 2500 watts
• RMS Power: 1250 watts
• Impedance: Dual 4 ohm
• Competition Grade Paper cone
• Foam surround
• Mount depth: 10.125"
• Sensitivity: 90.7 dB

Learn more about the sav218d4_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 SA-18 v.2 D4 18" (SA18V2D4)

2500W Peak (1250W RMS) 18" SA Series Dual 4-ohm Car Subwoofer (SW-SAV218D4)
Quantity: 1

Product Details:

  • 18" Dual 4 ohm SA Series Subwoofer
  • Power Handling:
    • Peak: 2500 watts
    • RMS: 1250 watts
  • Competition Grade Paper Cone
  • Foam Surround
  • Vented magnetic gap and pole piece
  • Innovative high velocity, cast aluminum vented frame spacer ring
  • Magnet ID faraday ring for smooth acoustic response
  • Spring-loaded terminals for easy connection
  • Stitched-on double “XL” tinsel leads
  • 2.75" High Temperature Copper Voice coil on aluminum former
  • 19 mm Xmax
  • Double Stacked magnet motor structure
  • Resonance Frequency (Fs): 31.868 Hz
  • Sensitivity: 90.7 dB
  • Recommended sealed box volume: 3.5 cubic feet
  • Recommended ported box volume: 4.5 cubic feet
  • Top-mount depth: 10.125"
  • Cutout diameter: 16.69"
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty

  • Priced Individually

Subwoofer Wiring Guide


Wiring Guide to Wire 1 Sundown Audio SW-SAV218D4 (Open Box, Great) Subwoofer

Mono Amp

2 Channel Amp - Bridged

Wiring Guide to Wire 2 Sundown Audio SW-SAV218D4 (Open Box, Great) Subwoofers

Mono Amp

Mono Amp - Option 1

2 Channel Amp

2 Channel Amp - Bridged

4 Channel Amp - Bridged

Wiring Guide to Wire 3 Sundown Audio SW-SAV218D4 (Open Box, Great) Subwoofers

Mono Amp

4 Channel Amp

Wiring Guide to Wire 4 Sundown Audio SW-SAV218D4 (Open Box, Great) Subwoofers

Mono Amp

2 Channel Amp

2 Channel Amp - Bridged

4 Channel Amp

Specifications & Details


Subwoofer Specifications
Series
SA Series
Subwoofer Size
18"
Peak Power Handling
2500 watts
RMS Power Handling
1250 watts
Voice Coil(s)
Dual
Impedance (Per Voice Coil)
4 ohm
Voice Coil Material
Aluminum
Voice Coil Diameter
2.75"
Sensitivity
90.7 dB
Xmax (millimeters)
19 mm
Subwoofer Design
Round / Circle
Main Cone Color
Black
Woofer Composition
Competition Grade Paper
Woofer Surround
Foam
Magnet Structure
Double Stacked
Subwoofer Grille
No
Re-Cone Kit Available
No
CTA-2031 Compliant
No
Recommended Enclosure Specifications
Recommended Enclosure Type
Ported / Vented
Sealed
Optimum Sealed Box Volume
3.5 cubic feet
Optimum Ported Box Volume
4.5 cubic feet
Top-Mount Depth (Mounting Depth)
10.125"
Cutout Diameter
16.69"
Shallow Mount Installation
No
T/S Parameters (Electromechanical)
Free-Air Resonance (Fs)
31.868 Hz
Equivalent Compliance (Vas)
106.964 liters
Total Speaker Q Value (Qts)
0.395
Electrical Q Value (Qes)
0.458
Electrical Resistance of Voice Coil (Re)
6.06 ohm
Mechanical Q Value (Qms)
2.853
What is in the box?
Paperwork
User manual
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:

SAV218D4_OBG

Weight:

52.00lbs

Internal SKU:

sav218d4_obg

Internal Product ID:

224554

Customer Ratings & Reviews


Sundown Audio SW-SAV218D4 (Open Box, Great) thumbnail image

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



Durability
0
Value
0
Features
0
Design
0
Usability
0

Customer Reviews

Sort by:

Loading...
Sorry, no reviews found


VK1600.2 small

Visonik VK1600.2

1600W 2-Channel Premium Car Audio Collection Amplifier

(6)

$104.99

List price $219.99

95-9602 small

Metra 95-9602

Double DIN Installation Kit for Select 2004-2011 Porsche 911 (type 997), Boxster, & Cayenne Vehicles

$72.50

List price $169.99

SX PRO 15D4 small

RE Audio SX PRO 15D4

1000W 15" SX Pro Series Dual 4 Ohm Subwoofer

$279.95

List price $649.99

AS68J-PAIR small

Audiobahn AS68 (2 Pairs)

Two Pairs of 6" x 8" 2-Way AS Series Full Range Speakers with Removable Tweeter for Remote Mounting

$84.95

List price $189.98

3474B001 small

Canon PowerShot A480 (Silver)

Compact and Colorful 10 Megapixel Digital Camera with 3.3X Optical Zoom and a 2.5" LCD

$119.99

List price $129.99

SRQ6832C small

Clarion SRQ6832C

6" x 8" 3-Way SRQ Series Coaxial Car Speakers

(7)

$59.95

List price $129.99

AE6100 small

Audio Technica AE6100

Hypercardioid Dynamic Handheld Microphone

$189.00

List price $299.99

SM58+X2U small

Shure SM58 + X2U

Digital Bundle with Shure SM58 Microphone and X2U USB

$199.00

List price $249.00

EX-200 small

Marathon EX-200

Multi-Band Sound Enhancement Processor with Surround Control and Bass Processor

$99.99

List price $139.99

Related Searches


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

2015 Porsche Cayenne

2008 BMW 535xi

2002 Kia Spectra

1998 GMC K1500

2002 MINI Cooper

2006 Audi S4

2015 Smart Fortwo

2004 Acura RL

2011 Porsche 911

2005 BMW 645Ci

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.