Garage
Shop
Account Icon
Account
Box Icon
Track
order
Telephone Icon
Call
Help Icon
Help
Door with Arrow Icon
Sign In

2011 BMW 550i GT

Change vehicle | Remove vehicle

Subwoofers and enclosures, specifically designed for your 2011 550i GT, as well as universal fit solutions

Overview Upgrade your Speakers Add a Subwoofer Add an Amplifier Digital Sound Processors Audio Installation & Accessories Add a Backup Camera Dads & Grads Sale

Subwoofers and Boxes for 2011 BMW 550i GT

A subwoofer that works with, or is designed for, your 2011 BMW 550i GT will add bass, clarity and depth to your music and system. A quality subwoofer will give realism and an overall rich, complete sound that you otherwise would not get with a factory car sound system.

Custom-fit subwoofer box

Custom-fit Subwoofer Boxes & Enclosures

Get a sub box designed specifically for your 550i GT.

Subwoofer bass packages

Universal Subwoofer Bass Packages

These packages include an amp, sub(s), an enclosure and amplifier wiring. They should fit your BMW 550i GT, but verify your trunk/rear vehicle area.

Universal Subwoofers

Universal Subwoofers

These sub(s) are perfect for adding to a empty box or custom built enclosure. They should work with your BMW 550i GT, but verify your trunk/rear vehicle area.

Universal-fit loaded and powered sub boxes

Universal-fit Loaded Subwoofer Boxes

These boxes include sub(s) and some include an amp. They should fit your BMW 550i GT, but verify your trunk/rear vehicle area.

Universal-fit empty unloaded sub boxes

Empty Universal-fit Sub Box Enclosures

These boxes are ready for you to add a sub and amp. They should fit your ride, but verify your trunk/rear vehicle area.

Dads & Grads Sale

Dads & Grads Sale

Free Gear / Open-Box Deals / Huge Discounts up to 40% off Car / Marine / ATV Audio

Filters
Reset Done
Product Type
Price Range
Product Fitment Type
RMS Power Handling
The RMS power is the amount of power the speaker requires to operate safely and properly. RMS Power Handling refers to the amount of power a speaker can handle on a continuous basis. We recommend powering your speakers or subwoofer with 80%-120% of its recommended RMS rating. The RMS power handling specification is typically rated per speaker unless otherwise noted.
Peak Power Handling
Peak power handling refers to the amount of power a speaker can handle during a brief musical burst. The RMS power range figure is a much more reliable rating for determining the speaker's power requirements. The Peak power handling specification is typically rated per speaker unless otherwise noted.
Series
Many brands group their products into series or lines of products to help customers know the level of quality (good, better, best for example). You can filter by series and the brand using our guided browsing.
Punch Series (72)
CompRT Series (43)
S Series (42)
W3 v3 Series (40)
CompR Series (39)
CompC Series (35)
SA Series (35)
Prime Series (30)
CompVR Series (28)
E-Series (28)
Y-Series (28)
CompVX Series (27)
VC Series (27)
X Series (27)
Prime R2 Series (25)
R2 Series (24)
HED Series (23)
CompQ Series (22)
Power Series (22)
Comp Series (21)
Apocalypse Series (20)
CompVT Series (20)
SoloX Series (20)
VMAX Series (20)
W1 v3 Series (20)
Power T1 Series (19)
SML Series (19)
VEGA Series (19)
N-Series (18)
Solo-Baric L7T Series (18)
U Series (18)
W0 v3 Series (18)
Z Series (18)
Reference Series (16)
TW3 Shallow Mount Series (16)
Type-R Series (16)
Punch P3 Series (15)
Solo-Baric L7S Series (15)
35 Series (14)
NEO Series (14)
Punch P3 Shallow Mount Series (14)
Status Series (14)
VS Series (14)
W6 v3 Series (14)
Solo-Baric L7R Series (13)
Stage Series (13)
55 Series (12)
Level 5 Series (12)
M2 Series (12)
Machete Series (12)
W7 Anniversary Edition Series (12)
Mille Pro Series (11)
T1 Slim Series (11)
ZR Series (11)
Bass Series (10)
Club Series (10)
IXS Shallow Series (10)
N Series (10)
SA Classic Series (10)
Terminator Series (10)
W7 Series (10)
ZXI Series (10)
EPICX Series (9)
EXL Series (9)
HD Series (9)
M Series (9)
Spike Series (9)
A Series (8)
Diamond Elite Series (8)
L Series (8)
Level 4 Series (8)
Nightshade (NS) Series (8)
Punch P2 Series (8)
R Series (8)
REVO Series (8)
Space Series (8)
XL Series (8)
Gen-X (7)
Hifonics Elite Series (7)
Hippo Series (7)
Hooligan Series (7)
Level 3 Series (7)
Level 6 Series (7)
Punch P1 Series (7)
Solo-Baric L7 Series (7)
SRW Series (7)
XED Series (7)
Zero Series (7)
D Series (6)
DMD Series (6)
eXcelon Series (6)
Godfather Series (6)
HCCA Series (6)
HEX Series (6)
Kappa Series (6)
LCS Series (6)
M1 Series (6)
SWT Series (6)
TW1 Series (6)
TW5 Shallow Mount Series (6)
VFL Comp Series (6)
75 Series (5)
Cento Series (5)
DES Series (5)
Excelon Reference Series (5)
Ghost Series (5)
MW Series (5)
SoloXS L7XS Series (5)
XR Series (5)
BassLine Series (4)
BT Series (4)
CVP Series (4)
DMD-SH Series (4)
EXL-X Series (4)
Godzilla Series (4)
GTR Series (4)
Hawk Series (4)
HED Slim Series (4)
King Series (4)
KM Subwoofer Series (4)
MicroSub Series (4)
RS Series (4)
Select Series (4)
SQ Series (4)
Stroker Series (4)
TB Series (4)
Tremor-X Series (4)
Arena X Series (3)
Atom Series (3)
DB+ Series (3)
Discus Series (3)
EQ Series (3)
Gen-XX (3)
GTX Series (3)
Level 1 Series (3)
Level 2 Series (3)
Primus Series (3)
PRO-X Series (3)
R-Series (3)
StowAway Series (3)
Summo Series (3)
SWS Series (3)
TITAN Series (3)
Titanium Series (3)
TNT Series (3)
VFL Series (3)
Arena Series (2)
C6 Series (2)
Champion Series (2)
DBA Series (2)
DBX Series (2)
Dieci Series (2)
DX Series (2)
Earthquake DBXI Series (2)
Elite Series (2)
ES Series (2)
GTS Series (2)
Hannibal Series (2)
HEX PRO Series (2)
HoleeS Series (2)
Hydro Series (2)
KM Series (2)
Magma Series (2)
Mille Legend Series (2)
OptiSound Series (2)
Polk Audio MM1 Series (2)
Power T2 Series (2)
Power T3 Series (2)
SL Series (2)
SPL Show Series (2)
Stadium Series (2)
Street Reference (2)
Stroker Pro Series (2)
Subzero Series (2)
TS Series (2)
XFL Series (2)
XMAXX Series (2)
XMAXXX Monster Series (2)
XS-Series (2)
7 Series (1)
Black Air Series (1)
BOA-N Series (1)
CRW Series (1)
Diamond Shallow Series (1)
DST Series (1)
Fuse Series (1)
GT Series (1)
GTX Series (1)
HF Series (1)
JackHammer Series (1)
M4 Series (1)
M6 Series (1)
MOJO Pro Series (1)
MotorSport Series (1)
P1 Series (1)
Performance Series (1)
PRO-NEO Series (1)
S65 Series (1)
SPL Monster Series (1)
Tarantula T5 Series (1)
TKO Series (1)
UFO Series (1)
Uno Series (1)
W0 v2 Series (1)
XD Series (1)
XO Series (1)
Subwoofer Size
Refers to the diameter of the subwoofer, measured in inches.
Shallow Mount Installation
This means that the subwoofer/speaker is designed to be installed in areas that do not have a lot of space. Shallow mount subwoofers are typically found under a seat or behind the seat in some trucks.

Shallow mount speakers will typically have a mounting depth of 2" or less, while shallow mount subwoofers will typically have a mounting depth of 3" or less.
Top-Mount Depth (Mounting Depth)
The depth when installed on top of the mounting surface. Measured from the bottom of the speaker's magnet to the bottom of the mounting holes on the rim of the speaker.
Voice Coil(s)
Dual voice coil subs have more wiring flexibility than single voice coils subs; however, single voice coil subwoofers provide easier hookup options for wiring multiple subwoofers in parallel or series. You may also run a dual voice coil (DVC) sub in parallel, series, or combination. A quad voice coil has four voice coils and is equal to two dual voice coil subwoofers as far as wiring goes.
Impedance (Per Voice Coil)
The load value (in ohms) that the speakers present to the amplifier per voice coil - the amount of resistance to the current flow. This is a key specification as subs wired in parallel or low impedances can create problems with your amplifier and potentially void all warranties. We encourage you to ask our support department prior to purchase if you do not understand which impedance level will suit your application best.
Subwoofer Design
This is the design of the subwoofer or the opening of the subwoofer enclosure. Each design has it's own benefits, whether it is a square, circle, or oval.

Round/Circle: This is the typical and common subwoofer design. They have a round cone and are a circle in design.

Square: These woofers are able to achieve a greater cone area in a smaller space. Because of the greater surface area, some square subwoofers will be louder than a round subwoofer of the same size.

Minimum Sealed Box Volume
This value indicates the minimum sealed box volume that the manufacturer recommends for the subwoofer. The volume is typically displayed in cubic feet.
Maximum Sealed Box Volume
This value indicates the maximum sealed box volume that the manufacturer recommends for the subwoofer. The volume is typically displayed in cubic feet.
Sensitivity
An efficiency or sensitivity rating tells you how effectively a speaker converts power into sound. The higher the number, the more efficient the speaker and the louder it will play with the same input power. An efficient speaker helps you maximize your available power. Most sensitivity ratings measure the speaker's output with 1 watt of input, 1 meter from the speaker. Some speakers' sensitivity is measured with 2.83 volts of input, instead of 1 watt.
  Efficiency (1w/1m) is not an accurate indicator of a subwoofer's output capability and should not be used as a comparison to other speakers or subwoofers to determine which one is "louder".
Main Cone Color
This is the color of the speaker's or subwoofer's cone.
Recommended Enclosure Type
This is the recommended type of enclosure that the subwoofer should be installed into. Some subwoofers are specially designed for particular enclosures.

Sealed: These enclosures completely enclose the air inside the box. These boxes produce a tight bass.

Ported/Vented: These enclosures have a slot of air to escape from the box. The result is a sound that has more "boom".

Bandpass: These are a combination of both sealed and ported enclosures. They can be very efficient, but require tuning for the best response.

Xmax (millimeters)
Typically measured in millimeters, the Xmax value is the measure of a speaker cone's maximum excursion in one direction while maintaining a linear behavior.
Deals
Promotions we have offer More Ways to Shop for items that are on clearance, last chance, special offer and sales, Made in America, and more!
Condition
Availability
filter-icon Filters & Sort

Atrend 12DM

Empty Dual 12" Medium Sealed Subwoofer Enclosure

12DM big
Go to item page Right Arrow Icon of Right Arrow

Atrend 12DM

Empty Dual 12" Medium Sealed Subwoofer Enclosure

• 12" Dual Medium Sealed Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Miter and Dado construction
• Premium carpet finish
• Silver spring loaded terminal cups
• Glued and braced with fasteners
• Total box volume: 2.36 cubic feet

shipping truck icon Free shipping in USA. Provide zip for delivery date.

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

List price $149.99
-27% $109.99

In stock

Only 2 Left!

Add to Cart

Tru Spec Dual 8" (1458GTO)

Empty Dual 8" Vented Prefabricated Enclosure for Sundown SA8V2 Subwoofers

Dual 8” big
Go to item page Right Arrow Icon of Right Arrow

Tru Spec Dual 8" (1458GTO)

Empty Dual 8" Vented Prefabricated Enclosure for Sundown SA8V2 Subwoofers

• 8" Dual Ported Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Total box volume: 1.30 cubic feet
• Compatible for Sundown SA8V2 and similar subwoofers (Sold separately)

shipping truck icon Free shipping in USA. Provide zip for delivery date.

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

8
List price $239.99
-33% $159.99

In stock.

Add to Cart
NVX - Worth the Envy - Direct to Consumer Car Audio

Sundown Audio LCS 12 v.2 D4 12" (LCS12V2D4)

1000W Peak (500W RMS) 12" LCS Series Dual 4-ohm Car Subwoofer (SW-LCSV212D4)

SW-LCSV212D4 big
Go to item page Right Arrow Icon of Right Arrow

Sundown Audio LCS 12 v.2 D4 12" (LCS12V2D4)

1000W Peak (500W RMS) 12" LCS Series Dual 4-ohm Car Subwoofer (SW-LCSV212D4)

• Peak Power: 1000 watts
• RMS Power: 500 watts
• Impedance: Dual 4 ohm
• Paper cone
• Foam surround
• Sensitivity: 87.4 dB

shipping truck icon Free shipping in USA. Provide zip for delivery date.
VIP Star Icon

VIP Product Get $17.50 in rewards to spend later

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

3
List price $209.99
-17% $174.99

In stock

Add to Cart

Orion HCCA122

10000W Peak (2500W RMS) 12" HCCA Series Dual 2-ohm Competition Car Subwoofer

HCCA122 big
Go to item page Right Arrow Icon of Right Arrow

Orion HCCA122

10000W Peak (2500W RMS) 12" HCCA Series Dual 2-ohm Competition Car Subwoofer

• Peak Power: 10000 watts
• RMS Power: 2500 watts
• Impedance: Dual 2 ohm
• Moisture and UV-resistant Paper cone
• Nitrile Butadiene Rubber (NBR)-Foam surround
• Mount depth: 10.28"
• Sensitivity: 84.22 dB

shipping truck icon Free shipping in USA. Provide zip for delivery date.
VIP Star Icon

VIP Product Get $65.00 in rewards to spend later

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

33
List price $779.99
-17% $649.95

In stock

Add to Cart

• Peak Power: 10000 watts
• RMS Power: 2500 watts
• Impedance: Dual 2 ohm
• Moisture and UV-resistant Paper cone
• Nitrile Butadiene Rubber (NBR)-Foam surround
• Mount depth: 10.28"
• Sensitivity: 84.22 dB

Earthquake Sound HoLeeS-12

10000W 12" HoLeeS Series Dual 1-ohm Subwoofer

HoLeeS-12 big
Go to item page Right Arrow Icon of Right Arrow

Earthquake Sound HoLeeS-12

10000W 12" HoLeeS Series Dual 1-ohm Subwoofer

• 10,000W Peak
• 5,000W RMS
• Poly-ether Wide Edge Surround
• Triangular Lattice Design
• Spider Ring Design for Increased Linear Spider Position
• PSP Terminal for Easy and Quick Wiring
• Aluminum Bobbin Voice Coil

shipping truck icon Free shipping in USA. Provide zip for delivery date.
VIP Star Icon

VIP Product Get $185.00 in rewards to spend later

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

9
List price $2199.99
-16% $1,849.99

In stock.

Add to Cart
Limited time!

NVX VSW104 Version 3 (VSW104v3)

1200W Peak (600 RMS) 10" VS-Series Dual 4-Ohm Car Subwoofer

VSW104v3 big
Go to item page Right Arrow Icon of Right Arrow

NVX VSW104 Version 3 (VSW104v3)

1200W Peak (600 RMS) 10" VS-Series Dual 4-Ohm Car Subwoofer

• Peak Power: 1200 watts
• RMS Power: 600 watts
• Impedance: Dual 4 ohm
• Enhanced Pressed Paper Cone
• High Roll Foam Surround
• Mount depth: 5.80"
• Sensitivity: 85 dB

Purchase $400 or More of NVX and Save 15%!
shipping truck icon Free shipping in USA. Provide zip for delivery date.
VIP Star Icon

VIP Product Get $12.00 in rewards to spend later

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

32
List price $143.99
-17% $119.99

In stock

Add to Cart

JL Audio 10W3v3-2

500W RMS 10" W3v3 Series Single 2-ohm Car Subwoofer

10W3v3-2 big
Go to item page Right Arrow Icon of Right Arrow

JL Audio 10W3v3-2

500W RMS 10" W3v3 Series Single 2-ohm Car Subwoofer

• RMS Power: 500 watts
• Impedance: Single 2 ohm
• Mineral-Filled Polypropylene Cone
• Nitrile Butadiene Rubber NBR Surround
• Mount depth: 5.93"
• Sensitivity: 85.37 dB

shipping truck icon Free shipping in USA. Provide zip for delivery date.
VIP Star Icon

VIP Product Get $42.00 in rewards to spend later

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

49
$419.99

In stock

Add to Cart
Used from: $356.99
Limited time!

Kicker L7S82 (44L7S82)

900W Peak (450W RMS) 8” Solo-Baric L7S Series Dual 2-ohm Subwoofer

L7S82 big
Go to item page Right Arrow Icon of Right Arrow

Kicker L7S82 (44L7S82)

900W Peak (450W RMS) 8” Solo-Baric L7S Series Dual 2-ohm Subwoofer

• Peak Power: 900 watts
• RMS Power: 450 watts
• Impedance: Dual 2 ohm
• Injection Molded Polypropylene Cone
• Ribbed Santoprene Surround
• Mount depth: 4-3/4"
• Sensitivity: 82.37 dB

shipping truck icon Free shipping in USA. Provide zip for delivery date.

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

1
List price $239.99
Save $64.03
-27% $175.96

In stock

Add to Cart
Used from: $153.99
Limited time!

Alpine R2-W8D4

1000W Peak (350W RMS) 8" R2-Series Dual 4-ohm Car Subwoofer

R2-W8D4 big
Go to item page Right Arrow Icon of Right Arrow

Alpine R2-W8D4

1000W Peak (350W RMS) 8" R2-Series Dual 4-ohm Car Subwoofer

• Peak Power: 1000 watts
• RMS Power: 350 watts
• Impedance: Dual 4 ohm
• Kevlar Reinforced Pulp Paper Cone
• High-Amplitude Multi-Roll (HAMR) Surround
• Mount depth: 4.56"
• Sensitivity: 83.7 dB

shipping truck icon Free shipping in USA. Provide zip for delivery date.
VIP Star Icon

VIP Product Get $24.00 in rewards to spend later

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

List price $360.00
Save $120.05
-33% $239.95

In stock

Add to Cart

JL Audio 8W3V3-4

250W RMS 8" W3v3 Series Single 4-ohm Car Subwoofer

8W3V3-4 big
Go to item page Right Arrow Icon of Right Arrow

JL Audio 8W3V3-4

250W RMS 8" W3v3 Series Single 4-ohm Car Subwoofer

• RMS Power: 250 watts
• Impedance: Single 4 ohm
• Mineral-Filled Polypropylene Cone
• Nitrile Butadiene Rubber NBR Surround
• Mount depth: 4.63"
• Sensitivity: 83.24 dB

shipping truck icon Free shipping in USA. Provide zip for delivery date.
VIP Star Icon

VIP Product Get $35.00 in rewards to spend later

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

45
$349.99

In stock

Add to Cart
Used from: $297.49
Limited time!

NVX NE121S

Single 12" Sealed 3/4" MDF Black Carpeted Subwoofer Enclosure – 1.0 Cu. Ft. with Polyfil and NVX Logo

NE121S big
Go to item page Right Arrow Icon of Right Arrow

NVX NE121S

Single 12" Sealed 3/4" MDF Black Carpeted Subwoofer Enclosure – 1.0 Cu. Ft. with Polyfil and NVX Logo

• 12" Single Sealed Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Internal box volume: 1.00 cubic feet
• Premium Black Carpet with Black NVX Logo

Purchase $400 or More of NVX and Save 15%!
shipping truck icon Free shipping in USA. Provide zip for delivery date.

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

1
List price $99.99
-10% $89.99

In stock

Add to Cart
Limited time!

NVX VSW124 Version 3 (VSW124v3)

1200 Watt (600W RMS) 12" VS-Series v3 Dual 4-ohm Car Subwoofer

VSW124v3 big
Go to item page Right Arrow Icon of Right Arrow

NVX VSW124 Version 3 (VSW124v3)

1200 Watt (600W RMS) 12" VS-Series v3 Dual 4-ohm Car Subwoofer

• Peak Power: 1200 watts
• RMS Power: 600 watts
• Impedance: Dual 4 ohm
• Enhanced Pressed Paper Cone
• High Roll Foam Surround
• Mount depth: 6.45"
• Sensitivity: 86 dB

Purchase $400 or More of NVX and Save 15%!
shipping truck icon Free shipping in USA. Provide zip for delivery date.

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

38
List price $155.99
-17% $129.99

In stock

Add to Cart

Atrend 12TKD

Empty Dual 12" Truck Sealed Subwoofer Enclosure

12TKD big
Go to item page Right Arrow Icon of Right Arrow

Atrend 12TKD

Empty Dual 12" Truck Sealed Subwoofer Enclosure

• 12" Dual Truck Sealed Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Universal truck (wedge) enclosure design
• Miter and Dado construction
• Premium black carpet finish
• Silver spring loaded terminal cups
• Glued and braced with fasteners
• Total box volume: 1.38 cubic feet

shipping truck icon Free shipping in USA. Provide zip for delivery date.

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

7
List price $174.99
-20% $139.95

In stock

Add to Cart

Sundown Audio SA-10 Classic D2 10" (SA10CLD2)

2000W Peak (1000W RMS) 10" SA Classic Series Dual 2-ohm Car Subwoofer (SW-SACL10D2)

SW-SACL10D2 big
Go to item page Right Arrow Icon of Right Arrow

Sundown Audio SA-10 Classic D2 10" (SA10CLD2)

2000W Peak (1000W RMS) 10" SA Classic Series Dual 2-ohm Car Subwoofer (SW-SACL10D2)

• Peak Power: 2000 watts
• RMS Power: 1000 watts
• Impedance: Dual 2 ohm
• Competition Grade Paper Cone
• Treated Foam Surround
• Mount depth: 6"
• Sensitivity: 81.0 dB

shipping truck icon Free shipping in USA. Provide zip for delivery date.
VIP Star Icon

VIP Product Get $32.00 in rewards to spend later

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

List price $383.99
-17% $319.99

In stock

Only 1 Left!

Add to Cart
Limited time!

Single 12" Subwoofer Angled Truck or Hatchback Box Enclosure

1TRUCK12 - CARB Compliant, 5/8" MDF Shallow Sub Enclosure Lined with Polyfil

1TRUCK12 big
Go to item page Right Arrow Icon of Right Arrow

Single 12" Subwoofer Angled Truck or Hatchback Box Enclosure

1TRUCK12 - CARB Compliant, 5/8" MDF Shallow Sub Enclosure Lined with Polyfil

• 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

Prime Time! Save 15% at Checkout!
shipping truck icon Free shipping in USA. Provide zip for delivery date.

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

27
List price $95.99
-43% $54.99

In stock

Add to Cart
Used from: $55.99

• 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

Atrend 12TKV

Empty Single 12" Truck Vented Subwoofer Enclosure

12TKV big
Go to item page Right Arrow Icon of Right Arrow

Atrend 12TKV

Empty Single 12" Truck Vented Subwoofer Enclosure

• 12" Single Truck Ported Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Universal truck (wedge) enclosure design
• Miter and Dado construction
• Premium carpet finish
• Silver spring loaded terminal cups
• Glued and braced with fasteners
• Total box volume: 0.27 cubic feet

shipping truck icon Free shipping in USA. Provide zip for delivery date.

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

2
List price $119.99
-28% $85.99

In stock

Add to Cart

JL Audio 12W3v3-2

500W RMS 12" W3v3 Series Single 2-ohm Car Subwoofer

12W3v3-2 big
Go to item page Right Arrow Icon of Right Arrow

JL Audio 12W3v3-2

500W RMS 12" W3v3 Series Single 2-ohm Car Subwoofer

• RMS Power: 500 watts
• Impedance: Single 2 ohm
• Mineral-Filled Polypropylene Cone
• Nitrile Butadiene Rubber NBR Surround
• Mount depth: 6.65"
• Sensitivity: 87.15 dB

shipping truck icon Free shipping in USA. Provide zip for delivery date.
VIP Star Icon

VIP Product Get $47.00 in rewards to spend later

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

45
$469.99

In stock

Add to Cart
Used from: $366.59

Atrend 10TK

Empty Single 10" Truck Sealed Subwoofer Enclosure

10TK big
Go to item page Right Arrow Icon of Right Arrow

Atrend 10TK

Empty Single 10" Truck Sealed Subwoofer Enclosure

• 10" Single Truck Sealed Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Universal truck (wedge) enclosure design
• Miter and Dado construction
• Premium carpet finish
• Silver spring loaded terminal cups
• Glued and braced with fasteners
• Total box volume: 0.62 cubic feet

shipping truck icon Free shipping in USA. Provide zip for delivery date.

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

4
List price $99.99
-26% $73.99

In stock

Add to Cart

Infinity Reference 103WSL (INFSUBRF103WSL)

1050W Peak (350W RMS) 10” Reference Series Dual 2-or 4-ohm Shallow Car Subwoofer

Reference 103WSL big
Go to item page Right Arrow Icon of Right Arrow

Infinity Reference 103WSL (INFSUBRF103WSL)

1050W Peak (350W RMS) 10” Reference Series Dual 2-or 4-ohm Shallow Car Subwoofer

• Peak Power: 1050 watts
• RMS Power: 350 watts
• Impedance: Dual 2 or 4 ohm
• Aluminum Cone
• Hi-Roll Rubber Surround
• Mount depth: 3-1/4"
• Sensitivity: 81 dB

shipping truck icon Free shipping in USA. Provide zip for delivery date.
VIP Star Icon

VIP Product Get $25.00 in rewards to spend later

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

List price $279.95
-11% $249.95

In stock

Only 1 Left!

Add to Cart

Kicker L7S102 (44TL7S102)

1200W Peak (600W RMS) Loaded Single 10" Vented Truck Enclosure

44TL7S102 big
Go to item page Right Arrow Icon of Right Arrow

Kicker L7S102 (44TL7S102)

1200W Peak (600W RMS) Loaded Single 10" Vented Truck Enclosure

• Ported truck enclosure with 1 10" Solo-Baric L7S Series Subwoofer
• 600 watts RMS (1200 watts Peak)
• Final Impedance: 2-ohm
• Dimensions: 21-1/2" L x 15" H x 10" W x 6-1/2" W2

shipping truck icon Free shipping in USA. Provide zip for delivery date.
VIP Star Icon

VIP Product Get $43.00 in rewards to spend later

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

5
List price $459.99
-7% $429.99

Available

Ships in 10-14 days

Add to Cart
NVX - Worth the Envy - Direct to Consumer Car Audio
Prev 3 4 5 6 7 Next

Items per page: 20 40 60

    Clear all
    why-shoping-with-sonic

    We love people and we're ready to help you! See what separates us from our competition.

    Take advantage of our VIP rewards like 10% back on your purchases, free 2-day shipping, extended warranties, and free returns! Gain access to all of these rewards without any membership fees.
    Get great discounted (and possibly FREE) installation accessories with most car stereo purchases. This includes dash kits, wiring harnesses and antenna adapters that you will need to properly install your new car stereo.
    We are an Authorized Dealer for all the brands we sell, including the most premium brands in car and marine audio such as Hertz, JL Audio, NVX, Rockford Fosgate, Kicker, Alpine, Kenwood and many more.
    Shop Deals and get up to 30% off premium brands! Shop Now! We are always looking out for the best products and deals to offer our customers. Don’t pay too much by shopping elsewhere!
    We have information on brands, gear, and more for you to explore! Check out our YouTube Channel for helpful how-to videos, product reviews, and Q&As. For a more detailed look, also visit our Learning Center!
    Our trained experts are here to assist you! They are just a phone call or click away to help you get the right gear for you and your vehicle!
    Why Shop With Us?
    FAQ for Subwoofer and Sub Box Upgrades in 2011 550i GT

    Q: Can I upgrade or change the Subwoofer and Sub Box Upgrades in 2011 BMW 550i GT?

    A: Yes this page includes all the best Subwoofer and Sub Box Upgrades that work in your 550i GT.

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

    2011 BMW 550i GT

    2013 BMW 750i

    2012 Lamborghini Aventador

    2002 Volvo S80

    2008 Chrysler PT Cruiser

    2011 Dodge Nitro

    2009 Subaru Forester

    2024 Lexus ES350

    2009 Audi S4

    2018 BMW 2 Series

    Vehicle
    Store     Delete

    2004 Harley Davidson FLHTCSE Screamin Eagle Electra Glide

    2007 Suzuki DL650 V-Strom

    2006 Harley Davidson FLSTFSE2 Screamin Eagle Fat Boy

    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

    Cancel

    This category was not designed for products.
    If you continue, you will be redirected to a category customized for your vehicle. Continue

    Cancel

    Shop your 2011 550i GT
    Why Use a Vehicle Fit Guide?
    Change vehicle | Shop without vehicle
    Whoa! Slow down. Add your details below!
    additional information required
    Add vehicle details to confirm fitment
    Ignore fitment details
    Find stereos and more that work -- fast.

    Additional information:

    Remove

    Can't find your vehicle? Click here and we'll help.

    Where to find vehicle info

    Go to Fitment

    Didn't find your car?

    Submit your details and we'll help!
    Please enter the letters as they are shown in the image above. Letters are not case-sensitive.
    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
    Back

    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.

    Back
    Track your order
    Call our experts
    Support Center
    Return & Exchanges
    Follow on Instagram Instagram logo
    Subscribe on YouTube YouTube logo