Garage
Shop

See all parts that fit your 2003 A4 Quattro

Tru Spec Dual 6.5 with 2 Sundown Audio SA-6.5 SW D4

Dual 6.5" Vented Prefabricated Enclosure with 600W Peak (300W RMS) 6.5" SA Series Dual 4-ohm Car Subwoofer (SW-SA6.5SWD4)

Tru Spec
Shop all Tru Spec
highlight-star-icon

•6.5" Dual Ported Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Total box volume: 0.6 cubic feet
• Compatible for Sundown SA65V2 and similar subwoofers (Sold separately)

Learn more about the dual65_2x_sa65swd4
Universal fit Icon

Universal – fits most vehicles.

Similar items | Update vehicle | Vehicle store
List price $485.97
Thanks , You Pay:
-5%

$459.97

 with warranty
Starting at $42/mo or 4 payments of $115 Buy now, pay later and installment payment plans are offered by Afterpay and Affirm. Learn more

Heads up

Your vehicle can use this product in multiple locations. Only a quantity of one can be selected from the product page. You will have the option to adjust the quantity within your cart.

shipping truck icon Free shipping in USA. Provide zip for delivery date.
Quantity
In Stock.
Brand new

Buy it now


Acima Logo

No Credit Option

Flexible Lease Payments

Early Purchase Options

Quick Approval Decision

Extend logo

Keep your product protected longer! Extend the warranty after the manufacturer warranty expires. 

  • Hassle-free immediate replacement within minutes!
  • Easy online claims 24/7
  • Covers product breakdowns and failures
Swoosh Icon Icon of Swoosh

For over 25 years, we've been your X-Factor – the team dedicated to having the biggest impact on your shopping experience!

Award winning icon
Award-Winning Service
Shipping icon
FREE Shipping Orders $49+
60 days return policy icon
60-Day Easy Returns
lowest price guarantee icon
Guaranteed Lowest Price
inHouseExpert
In-House Experts

Loading...
TS-T110 main

Pioneer TS-T110

240W Peak (80W RMS) 7/8-Inch Hard-Dome Tweeters (Pair)

43
-9.09%

$50.00

List price $55.00

Description


Tru Spec brand icon

Authorized dealer

Tru Spec Dual 6.5 (1456ER)

Empty Dual 6.5" Vented Prefabricated Enclosure
Quantity: 1

Product Details:

  • 6.5" Dual Ported Subwoofer Enclosure
  • Durable 3/4" Medium Density Fiberboard (MDF) construction
  • Compatible for the following 6.5" subwoofers (Sold separately):
    • Sundown Audio SW-SA6.5SWD2
    • Sundown Audio SW-SA6.5SWD4
    • DC Audio M3 6.5" Subwoofer
    • CT Sounds Meso 6.5" subwoofer
    • CT Sounds Tropo 6.5" subwoofer
    • Massive Hippo XL 6.5" Subwoofer
    • DS-18 Elite Z 6.5" Subwoofer
    • Rockville W6k9 6.5" Subwoofer
    • Skar EVL 6.5" Subwoofer
    • Audiopipe TXX BDC4 6.5" Subwoofer
    • Ampere Audio AA 6.5" RVE
  • Computer-designed CNC cut
  • Built with proper airspace and non-restrictive port
  • Maximum subwoofer mounting depth: 11.66"
  • Subwoofer cutout diameter: 5.95"
  • Total box volume: 0.6 cubic feet
  • Dimensions: 20" L x 9" H x 11.66" W
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty

Port Specifications:

  • Rectangular port
  • Number of ports: 1
  • Port diameter: 8"
  • Estimated port tuned frequency (fb): 40 Hz

Sundown Audio SA-6.5 SW D4 6.5" (SA65D4)

600W Peak (300W RMS) 6.5" SA Classic Series Dual 4-ohm Car Subwoofer (SW-SA6.5SWD4)
Quantity: 2

Product Details:

  • 6.5" Dual 4 ohm SA Classic Series Subwoofer
  • Power Handling:
    • Peak: 600 watts
    • RMS: 300 watts
  • Paper Cone
  • Foam Surround
  • Large aluminum faraday ring for smooth acoustic response
  • High temperature voice coil wire
  • Spring-loaded terminals for easy and tool-free connection
  • Integrated vent channels for enhanced cooling
  • Perfect for under/behind seat sub enclosures
  • 10 mm Xmax
  • Double Stacked magnet motor structure
  • Resonance Frequency (Fs): 51.8 Hz
  • Sensitivity: 81.5 dB
  • Recommended sealed box volume: 0.15 cubic feet
  • Recommended ported box volume: 0.3 cubic feet
  • Top-mount depth: 3.79"
  • Cutout diameter: 5.93"
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty

  • Priced Individually


Loading...
CVP8 main

Cerwin-Vega CVP8 (Sold Individually)

350W Peak (170W RMS) 8" CVPRO Series Pro Full Range 4-ohm Speaker

-16.67%

$49.99

List price $59.99

S2-S30 main

Alpine S2-S30

520W Peak (170W RMS) 3" S-Series Hi-Res 2-Way Coaxial 4-ohm Shallow Car Speakers

-14.32%

$119.95

List price $140.00

EPICPRO8X main

AudioControl EPICPRO8X

700W Peak (500W RMS) 8" Epic Pro Series Pro Audio Midrange 4-ohm Speakers

H80C main

Cerwin-Vega H80C

900W Peak (300W RMS) 8" HED Series 2 Way Component 4-ohm Speaker System

-16.67%

$219.99

List price $263.99

CF-275mt main

JL Audio CF-275mt

60W RMS 2.75" CF Series Custom-Fit Midrange 4-ohm Tweeters

12
H35 main

Cerwin-Vega H35

240W Peak (80W RMS) 3.5" Vega Series 2-Way Coaxial 4-ohm Speakers

-16.67%

$69.99

List price $83.99

No picture

Diamond Audio DMDX8

390W Peak (130W RMS) 8" DMDX Series 2-Way Cocentric Coaxial Car Speakers

S2-S80C main

Alpine S2-S80C

520W Peak (170W RMS) 8" S-Series Hi-Res 2-Way Component Car Speakers

-17.26%

$239.95

List price $290.00

CVMPCL8.0 main

Cerwin Vega CVMPCL8.0 (Sold Individually)

400W Peak (200W RMS) 8" Stroker Pro Series Full Range 4-ohm Speakers

-16.67%

$139.99

List price $167.99

PRO-HY8.4B main

DS18 PRO-HY8.4B (Sold Individually)

500W Peak (250W RMS) 8" PRO-HY Series 4-ohm Water-Resistant Hybrid Coaxial Midrange Loudspeaker

1

Best selling similar products

P3-2X12 small

Rockford Fosgate Punch P3 P3-2X12

• Dual Punch P3 12" Loaded Subwoofer Enclosure
• 2400W Peak
• 1200W RMS
• Constructed with Durable 5/8" MDF
• High Current Binding Posts
• Durable Black Carpet Covering
• Computer Optimized Design
• 1 Ohm Final Impedance

(40)

$709.99

List price $947.99

DL7R122 small

Kicker DL7R122 (45DL7R122)

• Ported enclosure with 2 12" Solo-Baric L7R Series Subwoofer
• 1200 watts RMS (2400 watts Peak)
• Final Impedance: 2-ohm
• Dimensions: 33-3/4" L x 15-7/8" H x 15-1/4" W x 20-3/8" W2

(8)

$519.96

List price $699.99

CP112-W0v3 small

JL Audio BassWedge CP112-W0v3

• 600W Peak
• 300W RMS
• Top-Quality MDF Construction
• Durable Dark Gray Carpet Finish
• Five-Way Binding Post Connectors
• Embroidered JL Audio Logo

(12)

$279.99

List price $279.99

47QL7R122 small

Kicker 47QL7R122

• Ported enclosure with 4 12" Solo-Baric L7R Series Subwoofer
• 2400 watts RMS (4800 watts Peak)
• Final Impedance: 2-ohm
• Dimensions: 28" L x 20-1/4" H x 35-7/8" W

(2)

$1199.96

List price $1599.99

CP210-W0v3 small

JL Audio BassWedge CP210-W0v3

•Dual 10" 10W0v3-4 Loaded Ported Enclosure
• 1200W Peak
• 600W RMS
• Top-Quality MDF Construction
• Durable Dark Gray Carpet Finish
• Five-Way Binding Post Connectors
• Embroidered JL Audio Logo

(9)

$349.99

List price $349.99

F250X00C20A-TN small

MTX Audio Thunderform F250X00C20A-TN

• 10" Amplified Loaded Subwoofer System
• 200 watts RMS
• Built-In Class Amplifier
• Speaker-Level Inputs
• Wired Remote Bass Level Control
• Compatible with select 2000-2014 F-250 Super Duty

$929.95

List price $747.95

DL7S122 small

Kicker DL7S122 (44DL7S122)

• Ported enclosure with 2 12" Solo-Baric L7S Series Subwoofer
• 1500 watts RMS (3000 watts Peak)
• Final Impedance: 2-ohm
• Dimensions: 33-3/4" L x 16" H x 16-1/4" W x 19-1/2" W2

(14)

$849.99

List price $949.99

DCWR122 small

Kicker DCWR122 (48DCWR122)

• Ported enclosure with 2 12" CompR Series Subwoofer
• 1000 watts RMS (2000 watts Peak)
• Final Impedance: 2-ohm
• Dimensions: 32-3/8" L x 16" H x 14" W x 17-1/4" W2

(2)

$439.96

List price $599.99

51PTRTP10 small

Kicker PTRTP10 (51PTRTP10)

• 10" Amplified Loaded Subwoofer System
• 400 watts RMS
• Built-In Class D Amplifier
• Variable Bass Boost
• Speaker-Level Inputs
• Wired Remote Bass Level Control

$499.99

List price $549.99

CP110-W0v3 small

JL Audio BassWedge CP110-W0v3

• 600W Peak
• 300W RMS
• Top-Quality MDF Construction
• Durable Dark Gray Carpet Finish
• Five-Way Binding Post Connectors
• Embroidered JL Audio Logo

(12)

$229.99

List price $229.99

Item Details


Manufacturer:

Model Number:

DUAL65_2X_SA65SWD4

Weight:

40.20lbs

Internal SKU:

dual65_2x_sa65swd4

Internal Product ID:

230097

Customer Ratings & Reviews


Tru Spec Dual 6.5 with 2 Sundown Audio SA-6.5 SW D4 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 Reviews

Sort by:

Loading...
This item does not have any detailed reviews, but has 1 rating from customers


No picture

Pioneer AVH-W4400NEX 2 DIN Car Stereo Install Kit Apple CarPlay Android Auto

Pioneer AVH-W4400NEX 2 DIN Car Stereo Install Kit Apple CarPlay Android Auto

(7)

$1226.90

List price $1695.95

98-11-FOR-RAN-SDNAMVH-KD small

1998-2011 Ford Ranger Single DIN CD w/ Bluetooth Car Stereo Upgrade | Kenwood

Includes In-Dash Car Stereo, Dash Kit and Harness (Non-Amp)

(77)

$232.80

List price $293.98

No picture

JL Audio XDM800/8 (Open Box, Like New)

800W RMS XDM Series Class D 8-Channel Car/Marine Amplifier

(3)

$934.99

List price $1099.99

KS-AX201, BAK82 small

JVC KS-AX201 + 8 Gauge Belva Amplifier Kit

500W Max AX2 Series Class AB Monoblock Amplifier + BAK82

(106)

$108.98

List price $249.94

GTR-7535 small

JBL GTR-7535

2300W Peak 5-Channel Class-D Bluetooth Car Amplifier with Clari-Fi Technology, ADAS input and cabin-mounted control panel

(1)

$299.95

List price $590.00

No picture

JL Audio XDM600/6 (Open Box, Like New)

600W RMS Class D XMD Series 6 Channel Car and Marine Amplifier

(3)

$829.99

List price $829.99

VXT62 small

Install Bay VXT62

XTC 6-1/2" Round Large Frame, Shallow Foam Acoustic Speaker Baffles

(28)

$22.99

List price $25.99

Related Searches


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

2003 Audi A4 Quattro

2021 Subaru Forester

1990 Dodge B Series

1979 Chevrolet Corvette

2001 Dodge Durango

2002 Daewoo Lanos

1985 Ford Ranger

2008 MINI Cooper

2009 GMC Envoy

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.