See all parts that fit your 2003 A4
12” Pro Single Sealed Square Subwoofer Box
Product highlights
• 12” Pro Single Sealed Square Subwoofer Box
• 11/16" Medium Density Fiberboard Construction
• Total box volume: 1.25 cubic feet
Connect your factory antenna to a new aftermarket radio for select 1973-2025 vehicles from Audi, Mercedes-Benz, Volkswagen
$7.99
List price $11.99
Install a new Single-DIN or Double-DIN car stereo in select 2002-2009 S4 and A4 and RS4 (Matte Black)
$27.99
List price $67.99
6.8" Double DIN Touchscreen Digital Multimedia Receiver with Bluetooth, Apple CarPlay, Android Auto (Sirius XM Ready)
$399.00
List price $600.00
Double DIN CD Receiver with Bluetooth and Built-in Alexa (Sirius XM Ready)
$169.00
List price $189.00
|
(newest, current model)
|
|
(previous model, replaced by Atrend 12SQL)
|
|
(previous model, replaced by Ground Shaker SQ 1 12-GRAY)
|
6.75" Double DIN Touchscreen Digital Multimedia Receiver with Bluetooth, Apple CarPlay, Android Auto with Backup Camera
$329.99
600W Peak (200W RMS) 6.5” CS Series 2 Way Coaxial 4-ohm Speakers
$79.96
List price $119.99
6.8" Double DIN Touchscreen Digital Multimedia Receiver with Bluetooth, Apple CarPlay, Android Auto, and SiriusXM Ready
$349.99
List price $420.00
7" Double DIN Touchscreen Digital Multimedia Receiver with Bluetooth, Apple CarPlay and Android Auto (SiriusXM Ready)
$329.95
List price $349.95
6.8" Double DIN Digital Multimedia Receiver with Bluetooth, Wireless Apple CarPlay, and Android Auto (SiriusXM Ready)
$599.99
List price $750.00
480W Peak (120W RMS) 6.5” DS Series 2-way 4-ohm Coaxial Car Speakers (DSC6504)
$84.99
List price $94.99
600W Peak (200W RMS) 6.5" DB+ Series 2 Way Coaxial 4-ohm Car, Marine and Powersports Speakers
$109.00
List price $119.99
360W Peak (120W RMS) 6.5" Club Series 2-way Coaxial 3-ohm Speakers
$99.95
List price $139.95
600W Peak (300W RMS) 6.5" Mille PRO Series 3-way 4-ohm Component Speaker System
$999.99
List price $1175.00
Best selling similar products
Single 10" Sealed MDF Subwoofer Enclosure (Belva MDFS10)
• 0.77 cu ft Sealed Enclosure
• 3/4" Medium Density Fiberboard Construction
• Durable Black Carpeting
• Pre-Lined with Poly-Fil
• Gold Speaker Terminals
(121)
$59.99
List price $99.99
Dual 12" 3/4 MDF Sealed Subwoofer Enclosure (Belva MDFD12)
• 3/4" Medium Density Fiberboard Construction
• Durable Black Carpeting
• Pre-Lined with Poly-Fil
• Gold Speaker Terminals
(120)
$99.99
List price $119.99
Single 12" Sealed MDF Subwoofer Enclosure (Belva MDFS12)
• 3/4" Medium Density Fiberboard Construction
• Durable Black Carpeting
• Pre-Lined with Poly-Fil
• Gold Speaker Terminals
(172)
$69.99
List price $69.99
• 10" Single Sealed Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Internal box volume: .65 cubic feet
• Premium Black Carpet with Black NVX Logo
(1)
$69.99
List price $83.99
• 10" Single Sealed Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Total box volume: 0.69 cubic feet
• Completely miter and dado end panels
• Premium carpeted finish
• Made in the USA
(16)
$59.99
List price $89.99
• 8" Single Sealed Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Internal box volume: .45 cubic feet
• Premium Black Carpet with Black NVX Logo
(1)
$59.99
List price $65.99
• 15" Single Sealed Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Internal box volume: 2.10 cubic feet
• Premium Black Carpet with Black NVX Logo
$89.99
List price $107.99
• 12" Dual Sealed Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Internal box volume: 2.00 cubic feet
• Premium Black Carpet with Black NVX Logo
(2)
$129.99
List price $155.99
Single 12" Subwoofer Angled Truck or Hatchback Box Enclosure
• 5/8" MDF (Medium Density Fiberboard)
• Perfect for
Tight Spaces (trucks/hatchbacks)
• Fits Most 12" Subwoofers
• 0.75 CuFt
• fully carpeted
• Fully Caulked and Sealed Tight
(27)
$54.99
List price $95.99
• 10" Dual Sealed Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Internal box volume: 1.20 cubic feet
• Premium Black Carpet with Black NVX Logo
$119.99
List price $143.99
Manufacturer:
Model Number:
SQ 1 12-GRAY
Weight:
23.50lbs
Internal SKU:
sq112-gray
Internal Product ID:
62657
| 5 star |
|
100% |
| 4 star |
|
0% |
| 3 star |
|
0% |
| 2 star |
|
0% |
| 1 star |
|
0% |
| Durability | ||
| Value | ||
| Features | ||
| Design | ||
| Usability |
Very good box!
I've had this box for over a year. It's a very high quality prefab box....something that is not always the case with prefab boxes. No air leaks whatsoever, and it's solid. If I'm in the need of another enclosure, I will surely use this brand again.
Verified purchase
14 found this helpful
Belva BAK02 - 1/0 Gauge Amp Kit
CCA Wiring Kit with 2-Channel RCA & Speaker Cable
(75)
$49.99
List price $69.99
NVX SDRLR1 Universal Roller Tool
Install your sound damping with the SDRLR1 tool
(125)
$10.99
List price $13.99
20 ft. of Dynamat Xtreme Trunk Kit
Keep your trunk from rattling and improve bass quality by using a sound dampening trunk kit.
(47)
$156.95
List price $187.44
NVX SDBP40 - 40 ft. (10% More Than Competition)
40 ft. Bulk Pack of Sound Dampening Material
(131)
$104.99
List price $119.99
These high grade banana clips allow you to plug into your banana clip ready terminal for a secure connection.
(17)
$2.99
List price $6.99
5" Portable Handheld GPS Navigation w/ Lane Assist and ecoRoute (010-00810-02)
(2)
$179.99
List price $349.99
Woodees IESW100B (IES-W100B) In-Ear Headphones/Earbuds
Inner Ear Stereo Earbuds/Earphones with In-Line Microphone, Sound Isolation and Natural Wood Housing
(7)
$40.98
List price $79.99
Garmin eTrex Venture (eTrex Venture® HC MPN: 010-00632-00)
Portable WAAS-Enabled GPS Receiver with 24 MB Internal Memory and Built-in Basemaps
(3)
$129.99
List price $214.99
300W Complete Dual + Visonik Bass Starter Package
Visonik V105S 10" Subwoofer + Dual PBA2150 Amp + 8 Gauge Amp Kit + 10" Sealed Sub Box
(74)
$119.95
List price $254.96
Double DIN CD/MP3/WMA Receiver with Remote (DPX-303)
(1)
$204.99
List price $299.99
JVC eAViNU KV-PX9B (Black KV-PX9)
Portable GPS Navigation Unit with 3.5" Touchscreen LCD, MP3/Video Playback and Home Kit
$199.99
List price $749.99
(Open Box) 600W RMS, Class D 5-Channel PDX Series Amplifier
$379.99
List price $599.99
Cancel
Modern vehicles often require specific brackets, wiring harnesses, and mounting solutions. A fit guide ensures:
Whether you're replacing a factory stereo or upgrading your entire audio system, the Fit Finder eliminates uncertainty.
