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2003 BMW 525i

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Universal subwoofers that fit most vehicles, including your 2003 525i.

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Universal Subwoofers for 2003 BMW 525i


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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 (38)
W3 v3 Series (26)
Power Series (22)
Apocalypse Series (21)
CompC Series (21)
SoloX Series (21)
CompR Series (20)
VC Series (20)
CompRT Series (19)
VMAX Series (18)
Y-Series (18)
Z Series (18)
S Series (17)
VEGA Series (17)
X Series (17)
E-Series (16)
SA Series (16)
HED Series (15)
CompVX Series (14)
NEO Series (14)
CompQ Series (13)
CompVR Series (13)
Level 5 Series (13)
Solo-Baric L7S Series (13)
U Series (13)
35 Series (12)
Machete Series (12)
TW3 Shallow Mount Series (12)
W7 Anniversary Edition Series (12)
Prime Series (11)
Reference Series (11)
Solo-Baric L7T Series (11)
N-Series (10)
Punch P3 Series (10)
R2 Series (10)
A Series (9)
EXL Series (9)
HD Series (9)
M Series (9)
Nightshade (NS) Series (9)
Power T1 Series (9)
Prime R2 Series (9)
Solo-Baric L7R Series (9)
ZR Series (9)
55 Series (8)
CompVT Series (8)
Diamond Elite Series (8)
Hifonics Elite Series (8)
Hippo Series (8)
Level 4 Series (8)
Mille Pro Series (8)
SA Classic Series (8)
W1 v3 Series (8)
XL Series (8)
ZXI Series (8)
Comp Series (7)
Hooligan Series (7)
IXS Shallow Series (7)
Level 3 Series (7)
Level 6 Series (7)
SRW Series (7)
VS Series (7)
D Series (6)
EPICX Series (6)
Godfather Series (6)
HCCA Series (6)
HEX Series (6)
R Series (6)
SML Series (6)
Spike Series (6)
TW1 Series (6)
VFL Comp Series (6)
W0 v3 Series (6)
W6 v3 Series (6)
Cento Series (5)
N Series (5)
SoloXS L7XS Series (5)
Space Series (5)
Stage Series (5)
Terminator Series (5)
XR Series (5)
75 Series (4)
CVP Series (4)
DMD Series (4)
DMD-SH Series (4)
EXL-X Series (4)
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GTR Series (4)
Hawk Series (4)
HED Slim Series (4)
Kappa Series (4)
King Series (4)
L Series (4)
LCS Series (4)
Level 2 Series (4)
Punch P3 Shallow Mount Series (4)
RS Series (4)
Status Series (4)
Stroker Series (4)
SWT Series (4)
T1 Slim Series (4)
Tremor-X Series (4)
TW5 Shallow Mount Series (4)
Type-R Series (4)
Atom Series (3)
C6 Series (3)
Club Series (3)
DB+ Series (3)
Discus Series (3)
EQ Series (3)
eXcelon Series (3)
Gen-XX (3)
GTS Series (3)
GTX Series (3)
Level 1 Series (3)
PRO-X Series (3)
Select Series (3)
Solo-Baric L7 Series (3)
Summo Series (3)
SWS Series (3)
TITAN Series (3)
Titanium Series (3)
TNT Series (3)
VFL Series (3)
XED Series (3)
Arena Series (2)
Bass Series (2)
BassLine Series (2)
Champion Series (2)
Dieci Series (2)
DX Series (2)
Earthquake DBXI Series (2)
Elite Series (2)
ES Series (2)
Excelon Reference Series (2)
Gen-X (2)
GTX Series (2)
Hannibal Series (2)
HEX PRO Series (2)
HoleeS Series (2)
Magma Series (2)
Mille Legend Series (2)
Polk Audio MM1 Series (2)
Power T2 Series (2)
Power T3 Series (2)
Punch P1 Series (2)
SL Series (2)
SPL Show Series (2)
SQ Series (2)
Stadium Series (2)
Street Reference (2)
Stroker Pro Series (2)
Subzero Series (2)
W7 Series (2)
XFL Series (2)
XMAXX Series (2)
XMAXXX Monster Series (2)
XS-Series (2)
Arena X Series (1)
BOA-N Series (1)
CRW Series (1)
Diamond Shallow Series (1)
GT Series (1)
HF Series (1)
JackHammer Series (1)
JVC DRVN Series (1)
M2 Series (1)
M4 Series (1)
M6 Series (1)
MOJO Pro Series (1)
Primus Series (1)
Punch P2 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.
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MTX TN12-04

400W Peak (200W RMS) 12" Terminator Series Single 4-ohm Car Subwoofer

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MTX TN12-04

400W Peak (200W RMS) 12" Terminator Series Single 4-ohm Car Subwoofer

• Peak Power: 400 watts
• RMS Power: 200 watts
• Impedance: Single 4 ohm
• Polypropylene Cone
• Rubber Surround
• Mount depth: 5.44"
• Sensitivity: 86.4 dB

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Kicker L7X122 (49L7X122)

2000W RMS 12" SoloX Series Dual 2-ohm Subwoofer

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Kicker L7X122 (49L7X122)

2000W RMS 12" SoloX Series Dual 2-ohm Subwoofer

• RMS Power: 1000 - 2000 watts
• Impedance: Dual 2 ohm
• Double-pressed pulp Cone
• UV-resistant Santoprene Surround
• Mount depth: 10-1/8"

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• RMS Power: 1000 - 2000 watts
• Impedance: Dual 2 ohm
• Double-pressed pulp Cone
• UV-resistant Santoprene Surround
• Mount depth: 10-1/8"

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Kicker L7T124 (46L7T124) (Open Box, Great)

1200W Peak (600W RMS) 12" L7T Solo-Baric Series Dual 4-ohm Shallow Car Subwoofer

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Kicker L7T124 (46L7T124) (Open Box, Great)

1200W Peak (600W RMS) 12" L7T Solo-Baric Series Dual 4-ohm Shallow Car Subwoofer

• Peak Power: 1200 watts
• RMS Power: 600 watts
• Impedance: Dual 4 ohm
• SoloKon Polypropylene Cone
• Ribbed Santoprene Surround
• Mount depth: 4-1/8"
• Sensitivity: 86.54 dB

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• Peak Power: 1200 watts
• RMS Power: 600 watts
• Impedance: Dual 4 ohm
• SoloKon Polypropylene Cone
• Ribbed Santoprene Surround
• Mount depth: 4-1/8"
• Sensitivity: 86.54 dB

Deaf Bonce Machete ML-10R D2

1000W Peak (500W RMS) 10” Machete Series Dual 2-ohm Car Subwoofer

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Deaf Bonce Machete ML-10R D2

1000W Peak (500W RMS) 10” Machete Series Dual 2-ohm Car Subwoofer

• Peak Power: 1000 watts
• RMS Power: 500 watts
• Pressed Paper Cone
• Foam Surround
• Impedance: Dual 2 ohm
• Mount depth: 4.91"
• Sensitivity: 86.00 dB

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Rockford Fosgate Power T3 T3S1-19

6000W Peak (3000W RMS) 19" Power Series Single 1-ohm Super Car Subwoofer

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Rockford Fosgate Power T3 T3S1-19

6000W Peak (3000W RMS) 19" Power Series Single 1-ohm Super Car Subwoofer

• Peak Power: 6000 watts
• RMS Power: 3000 watts
• Impedance: Single 1 ohm
• Glass Fiber Cone
• Injection molded foam Surround
• Mount depth: 15.62"
• Sensitivity: 91 dB

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Deaf Bonce Apocalypse DB-SA2510 D1

1600W Peak (800W RMS) 10” Apocalypse Series Dual 1-ohm Car Subwoofer

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Deaf Bonce Apocalypse DB-SA2510 D1

1600W Peak (800W RMS) 10” Apocalypse Series Dual 1-ohm Car Subwoofer

• Peak Power: 2000 watts
• RMS Power: 1000 watts
• Pressed Paper Cone
• Foam Surround
• Impedance: Dual 1 ohm
• Mount depth: 5.95"
• Sensitivity: 85.20 dB

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Kicker L7T102 (46L7T102)

1000W Peak (500W RMS) 10" Solo-Baric L7T Series Dual 2-ohm Shallow Car Subwoofer

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Kicker L7T102 (46L7T102)

1000W Peak (500W RMS) 10" Solo-Baric L7T Series Dual 2-ohm Shallow Car Subwoofer

• Peak Power: 1000 watts
• RMS Power: 500 watts
• Impedance: Dual 2 ohm
• SoloKon Polypropylene Cone
• Ribbed Santoprene Surround
• Mount depth: 3-3/4"
• Sensitivity: 85.98 dB

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JL Audio 12W1v3-4

300W RMS 12" W1v3 Series Single 4-ohm Car Subwoofer

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JL Audio 12W1v3-4

300W RMS 12" W1v3 Series Single 4-ohm Car Subwoofer

• RMS Power: 300 watts
• Impedance: Single 4 ohm
• Mica Injected Polypropylene - MIPP Cone
• Nitrile Butadiene Rubber NBR Surround
• Mount depth: 5.41"
• Sensitivity: 86.1 dB

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Sundown Audio M-15 D1 15" (M15D1)

4000W Peak (2000W RMS) 15" M Series Dual 1-ohm Car Subwoofer (SW-M15D1)

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Sundown Audio M-15 D1 15" (M15D1)

4000W Peak (2000W RMS) 15" M Series Dual 1-ohm Car Subwoofer (SW-M15D1)

• Peak Power: 4000 watts
• RMS Power: 2000 watts
• Impedance: Dual 1 ohm
• Polypropylene Cone
• High Roll Foam Surround
• Mount depth: 12.06"
• Sensitivity: 83.024 dB

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Sundown Audio X-18 v.3 D2 18" (X12V3D2)

5000W Peak (2500W RMS) 18" X Series Dual 2-ohm Car Subwoofer (SW-XV318D2)

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Sundown Audio X-18 v.3 D2 18" (X12V3D2)

5000W Peak (2500W RMS) 18" X Series Dual 2-ohm Car Subwoofer (SW-XV318D2)

• Peak Power: 5000 watts
• RMS Power: 2500 watts
• Impedance: Dual 2 ohm
• Pressed Paper Cone
• Mega Roll V2 Surround
• Mount depth: 13.6"
• Sensitivity: 87.6 dB

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Kicker L7X101 (49L7X101)

2000W RMS 10" SoloX Series Dual 1-ohm Subwoofer

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Kicker L7X101 (49L7X101)

2000W RMS 10" SoloX Series Dual 1-ohm Subwoofer

• RMS Power: 1000 - 2000 watts
• Impedance: Dual 1 ohm
• Double-pressed pulp Cone
• UV-resistant Santoprene Surround
• Mount depth: 9-7/16"

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• RMS Power: 1000 - 2000 watts
• Impedance: Dual 1 ohm
• Double-pressed pulp Cone
• UV-resistant Santoprene Surround
• Mount depth: 9-7/16"

Rockford Fosgate Power T2 T2S1-13

4000W Peak (2000W RMS) 13" Power Series Single 1-ohm Car Subwoofer

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Rockford Fosgate Power T2 T2S1-13

4000W Peak (2000W RMS) 13" Power Series Single 1-ohm Car Subwoofer

• Peak Power: 4000 watts
• RMS Power: 2000 watts
• Impedance: Triple 1 ohm
• Glass Fiber Cone
• Injection molded foam Surround
• Mount depth: 9.7"
• Sensitivity: 90 dB

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Kicker CVR10 (52CVR102)

750W Peak (375W RMS) 10" CompVR Series Dual 2-ohm Car Subwoofer

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Kicker CVR10 (52CVR102)

750W Peak (375W RMS) 10" CompVR Series Dual 2-ohm Car Subwoofer

• Peak Power: 750 watts
• RMS Power: 375 watts
• Impedance: Dual 2 ohm
• Injection Molded Polypropylene Cone
• ISD (Inverted Structural Dome)
• Santoprene Rubber Surround
• Mount depth: 5-1/2"
• Sensitivity: 83.6 dB

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JL Audio 13TW5v2-2

600W 13.5" TW5v2 (Thin-Line) Series Single 2-ohm Subwoofer

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JL Audio 13TW5v2-2

600W 13.5" TW5v2 (Thin-Line) Series Single 2-ohm Subwoofer

• Mounting depth: 2.625 "
• Requires Only 0.8 Cubic Feet of Airspace
• Excellent linear excursion capability (xmax)
• Patented "floating cone attach method" technology
• Patented "concentric tube" architecture

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• Mounting depth: 2.625 "
• Requires Only 0.8 Cubic Feet of Airspace
• Excellent linear excursion capability (xmax)
• Patented "floating cone attach method" technology
• Patented "concentric tube" architecture

Deaf Bonce Machete ML-12R D4

1000W Peak (500W RMS) 12” Machete Series Dual 4-ohm Car Subwoofer

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Deaf Bonce Machete ML-12R D4

1000W Peak (500W RMS) 12” Machete Series Dual 4-ohm Car Subwoofer

• Peak Power: 1000 watts
• RMS Power: 500 watts
• Pressed Paper Cone
• Foam Surround
• Impedance: Dual 4 ohm
• Mount depth: 5.3"
• Sensitivity: 88.0 dB

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$114.90

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Kicker CVX104 (50CVX104)

1200W Peak (600W RMS) 10" CompVX Series Dual 4-ohm Car Subwoofer

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Kicker CVX104 (50CVX104)

1200W Peak (600W RMS) 10" CompVX Series Dual 4-ohm Car Subwoofer

• Peak Power: 1200 watts
• RMS Power: 600 watts
• Impedance: Dual 4 ohm
• Polypropylene cone
• Ribbed Santoprene surround
• Mount depth: 5-15/16"
• Sensitivity: 85.7 dB

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Orion HCCA104

8000W Peak (2000W RMS) 10" HCCA Series Dual 4-ohm Competition Car Subwoofer

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Orion HCCA104

8000W Peak (2000W RMS) 10" HCCA Series Dual 4-ohm Competition Car Subwoofer

• Peak Power: 8000 watts
• RMS Power: 2000 watts
• Impedance: Dual 4 ohm
• Moisture and UV-resistant Paper cone
• Nitrile Butadiene Rubber (NBR)-Foam surround
• Mount depth: 8.425"
• Sensitivity: 84 dB

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• Peak Power: 8000 watts
• RMS Power: 2000 watts
• Impedance: Dual 4 ohm
• Moisture and UV-resistant Paper cone
• Nitrile Butadiene Rubber (NBR)-Foam surround
• Mount depth: 8.425"
• Sensitivity: 84 dB

Rockford Fosgate Prime R2 R2SD2-12

500W Peak (250W RMS) 12" Prime Series Dual 2-ohm Shallow Car Subwoofer

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Rockford Fosgate Prime R2 R2SD2-12

500W Peak (250W RMS) 12" Prime Series Dual 2-ohm Shallow Car Subwoofer

• Peak Power: 500 watts
• RMS Power: 250 watts
• Impedance: Dual 2 ohm
• Mica Injected Polypropylene - MIPP Cone
• Rubber Surround
• Mount depth: 3.602"
• Sensitivity: 81 dB

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Kicker L7T84 (46L7T84)

700W Peak (350W RMS) 8" Solo-Baric L7T Series Dual 4-ohm Shallow Car Subwoofer

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Kicker L7T84 (46L7T84)

700W Peak (350W RMS) 8" Solo-Baric L7T Series Dual 4-ohm Shallow Car Subwoofer

• Peak Power: 700 watts
• RMS Power: 350 watts
• Impedance: Dual 4 ohm
• SoloKon Polypropylene Cone
• Ribbed Santoprene Surround
• Mount depth: 2-3/4"
• Sensitivity: 84.835 dB

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Kicker CWR102 (48CWR102) (Open Box, Great)

800W Peak (400W RMS) 10” CompR Series Dual 2-ohm Subwoofer

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Kicker CWR102 (48CWR102) (Open Box, Great)

800W Peak (400W RMS) 10” CompR Series Dual 2-ohm Subwoofer

• Peak Power: 800 watts
• RMS Power: 200-400 watts
• Impedance: Dual 2 ohm
• Injection Molded Polypropylene cone
• Santoprene Rubber surround
• Mount depth: 5-1/4"
• Sensitivity: 84.6 dB

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• Peak Power: 800 watts
• RMS Power: 200-400 watts
• Impedance: Dual 2 ohm
• Injection Molded Polypropylene cone
• Santoprene Rubber surround
• Mount depth: 5-1/4"
• Sensitivity: 84.6 dB

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    FAQ for Universal Subwoofers in 2003 525i

    Q: Can I upgrade or change the Universal Subwoofers in 2003 BMW 525i?

    A: Yes this page includes all the best Universal Subwoofers that work in your 525i.

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