Garage
Shop

See all parts that fit your 2015 Rio

Sundown Audio XV38D4 (Refurbished)

800W RMS 8" X Series Dual 4-ohm Car Subwoofer

Sundown Audio
Shop all Sundown Audio
highlight-star-icon

• Peak Power:
• RMS Power: 800 watts
• Impedance: Dual 4 ohm
• FEA optimized spider and surround
• Mount depth: 6.8"
• Sensitivity: 81.8 dB

Learn more about the rxv38d4

We apologize

This item has been discontinued

Description


Sundown Audio brand icon

Authorized dealer

Item Condition - Refurbished:

A manufacturer refurbished product will function like new with all parts inspected or replaced as necessary. There may be slight cosmetic issues such as scratches or similar. See the description for additional details.


Sundown Audio R-XV38D4

The X-8 v.3 is widely regarded as one of the top-performing 8" subwoofers on the market, and remains a fan favorite after over four years of continuous production.

It outclasses the previous v1 and v2 models in every way, thanks in large part to its finely FEA-optimized spider and surround—key elements in delivering tight, controlled excursion. Built on Sundown’s custom-tooled 8" frame, the X-8 v.3 pushes the platform to its absolute limit. The motor and coil support ~20mm of one-way linear excursion and up to 2.4" peak-to-peak before the coil exits the gap. An aluminum shorting ring and other proprietary features help reduce distortion. Its 800-watt RMS rating is conservative for what it can truly handle.


Product Details:

  • 8" Dual 4 ohm X Series Subwoofer
  • Power Handling:
    • RMS: 800 watts
  • FEA optimized spider and surround
  • Custom-tooled frame
  • 19 mm Xmax
  • Aluminum magnet shorting ring
  • Resonance Frequency (Fs): 49.6 Hz
  • Sensitivity: 81.8 dB
  • Recommended sealed box volume: 0.3 cubic feet - 0.4 cubic feet
  • Recommended ported box volume: 0.75 cubic feet - 1 cubic feet
  • Top-mount depth: 6.8"
  • Cutout diameter: 7.36"
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty

  • Priced Individually

Note:This is a used product that has been professionally rebuilt at Sundown Audio. It comes with a non-DOA warranty only. That means they are guaranteed to work when you receive it but no further warranty afterwards.

Subwoofer Wiring Guide


Wiring Guide to Wire 1 Sundown Audio XV38D4 (Refurbished) Subwoofer

Mono Amp

2 Channel Amp - Bridged

Wiring Guide to Wire 2 Sundown Audio XV38D4 (Refurbished) 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 XV38D4 (Refurbished) Subwoofers

Mono Amp

4 Channel Amp

Wiring Guide to Wire 4 Sundown Audio XV38D4 (Refurbished) Subwoofers

Mono Amp

2 Channel Amp

2 Channel Amp - Bridged

4 Channel Amp

Specifications & Details


Subwoofer Specifications
Series
X Series
Subwoofer Size
8"
RMS Power Handling
800 watts
Voice Coil(s)
Dual
Impedance (Per Voice Coil)
4 ohm
Sensitivity
81.8 dB
Xmax (millimeters)
19 mm
Subwoofer Design
Round / Circle
Main Cone Color
Black
Subwoofer Grille
No
Re-Cone Kit Available
No
CTA-2031 Compliant
No
Recommended Enclosure Specifications
Recommended Enclosure Type
Ported / Vented
Sealed
Minimum Sealed Box Volume
0.3 cubic feet
Maximum Sealed Box Volume
0.4 cubic feet
Minimum Ported Box Volume
0.75 cubic feet
Maximum Ported Box Volume
1 cubic feet
Top-Mount Depth (Mounting Depth)
6.8"
Cutout Diameter
7.36"
Shallow Mount Installation
No
T/S Parameters (Electromechanical)
Free-Air Resonance (Fs)
49.6 Hz
Equivalent Compliance (Vas)
3.2 liters
Total Speaker Q Value (Qts)
0.36
Electrical Q Value (Qes)
0.4
Electrical Resistance of Voice Coil (Re)
6 ohm
Mechanical Q Value (Qms)
3.32
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:

R-XV38D4

Weight:

1.00lb

Internal SKU:

rxv38d4

Internal Product ID:

210494

Customer Ratings & Reviews


Sundown Audio XV38D4 (Refurbished) 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


SI416 small

Stinger SI416

4000 Series Interconnects 6.0 ft Right Angle 3.5mm to Right Angle 3.5mm

(3)

$15.99

List price $29.00

V16RCA-174 small

T-Spec V16RCA-174

v16 SERIES - Premium Gold Plated 4 Channel RCA Cable - 17'

$232.99

List price $258.99

DEH-P4100UB small

Pioneer DEH-P4100UB

In-Dash CD, MP3, WMA, ACC Receiver with USB/iPod Direct Controls, Front Aux Input and Remote

(5)

$149.99

List price $219.99

CD-IU51V small

Pioneer CD-IU51V

USB-to-iPhone/iPod Adapter Interface Cable for AVIC-X930BT and AVIC-Z130BT

(3)

$39.99

List price $49.99

PEQ small

Rockford Fosgate Punch PEQ

Wired Bass/Treble Equalization Remote Controller for Select 2007-2025 Punch and Power Amplifiers

(62)

$49.99

List price $49.99

Related Searches


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

2015 Kia Rio

1986 Buick Century

2015 Honda Pilot

2016 Subaru Impreza

2017 Chevrolet Spark

2011 Ram 4500

1996 Cadillac DeVille

1998 Chevrolet Tracker

2017 Volvo S90

2006 Mazda 5

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.