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.

Up to 199.99 watts (39)

200–399.99 watts (263)

400–799.99 watts (415)

800–1,199.99 watts (154)

1,200–1,999.99 watts (72)

2,000 watts or more (202)

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.

Up to 299.99 watts (6)

300–499.99 watts (55)

500–799.99 watts (163)

800–1,199.99 watts (189)

1,200–1,599.99 watts (178)

1,600–2,399.99 watts (174)

2,400 watts or more (259)

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.

Apocalypse Series (21)

W7 Anniversary Edition Series (12)

Prime Series (11)

R2 Series (11)

Solo-Baric L7T Series (11)

Punch P3 Series (10)

Reference Series (10)

Solo-Baric L7S Series (10)

TW3 Shallow Mount Series (9)

Diamond Elite Series (8)

Hippo Series (8)

Level 4 Series (8)

Mille Pro Series (8)

Nightshade (NS) Series (8)

SA Classic Series (8)

W1 v3 Series (8)

XL Series (8)

ZXI Series (8)

Hifonics Elite Series (7)

Hooligan Series (7)

IXS Shallow Series (7)

Level 3 Series (7)

Level 6 Series (7)

SML Series (7)

Solo-Baric L7R Series (7)

SoloXS L7XS Series (5)

Space Series (5)

Stage Series (5)

Terminator Series (5)

Punch P3 Shallow Mount Series (4)

TW5 Shallow Mount Series (4)

Solo-Baric L7 Series (3)

Earthquake DBXI Series (2)

Elite Series (2)

ES Series (2)

Excelon Reference Series (2)

Mille Legend Series (2)

Polk Audio MM1 Series (2)

Stroker Pro Series (2)

XMAXXX Monster Series (2)

Diamond Shallow Series (1)

GT Series (1)

HF Series (1)

JackHammer Series (1)

SPL Monster Series (1)

Tarantula T5 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.

No (920)

Yes (205)

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.

Dual (2 voice coils) (876)

Single (1 voice coil) (266)

Triple (3 voice coils) (4)

Quad (4 voice coils) (1)

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.

Sort Impedance (Per Voice Coil) alphanumerically

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.

Round (1,086)

Square (61)

Oval (1)

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.

Up to 0.99 cubic feet (247)

1–1.99 cubic feet (105)

2 cubic feet or more (18)

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.

Up to 0.99 cubic feet (85)

1–1.99 cubic feet (140)

2 cubic feet or more (125)

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.

Bandpass (17)

Ported / Vented (1,044)

Sealed (859)

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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On Sale (167)

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Condition

Brand New (994)

Like New & Used (156)

Availability

In Stock (868)

Out of stock (134)

In stock. Ships from manufacturer (148)

Available to order (105)

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Kicker L7R102 (45L7R102)

1000W Peak (500W RMS) 10" Solo-Baric L7R Series Dual 2-ohm Subwoofer

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Kicker L7R102 (45L7R102)

1000W Peak (500W RMS) 10" Solo-Baric L7R Series Dual 2-ohm Subwoofer

• Peak Power: 1000 watts
• RMS Power: 500 watts
• Injection-molded SoloKon Cone
• Ribbed Santoprene Wrap Around Gasketing
• Impedance: Dual 2 ohm
• Mount depth: 6 1/8"
• Sensitivity: 85.9 dB

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Rockford Fosgate Power T1 T1D415

2000W Peak (1000W RMS) 15" Power Series Dual 4-ohm Car Subwoofer

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Rockford Fosgate Power T1 T1D415

2000W Peak (1000W RMS) 15" Power Series Dual 4-ohm Car Subwoofer

• Peak Power: 2000 watts
• RMS Power: 1000 watts
• Impedance: Dual 4 ohm
• Kevlar Reinforced Pulp Paper Cone
• Santoprene Rubber Surround
• Mount depth: 8.39"
• Sensitivity: 87.5 dB

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Sundown Audio SA-18 v.2 D4 18" (SA18V2D4)

2500W Peak (1250W RMS) 18" SA Series Dual 4-ohm Car Subwoofer (SW-SAV218D4)

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Sundown Audio SA-18 v.2 D4 18" (SA18V2D4)

2500W Peak (1250W RMS) 18" SA Series Dual 4-ohm Car Subwoofer (SW-SAV218D4)

• Peak Power: 2500 watts
• RMS Power: 1250 watts
• Impedance: Dual 4 ohm
• Competition Grade Paper cone
• Foam surround
• Mount depth: 10.125"
• Sensitivity: 90.7 dB

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Hertz CS 300 S2

700W Peak (350W RMS) 12" Cento Series Single 2-ohm Shallow Mount Car Subwoofer

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Hertz CS 300 S2

700W Peak (350W RMS) 12" Cento Series Single 2-ohm Shallow Mount Car Subwoofer

• Peak Power: 700 watts
• RMS Power: 350 watts
• Impedance: Single 2 ohm
• Polypropylene Cone
• Rubber Surround
• Mount depth: 5.12"
• Sensitivity: 86.5 dB

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$329.99

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Cerwin-Vega H10DV4

1650W Peak (550W RMS) 10" HED Series Dual 4-ohm Subwoofer

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Cerwin-Vega H10DV4

1650W Peak (550W RMS) 10" HED Series Dual 4-ohm Subwoofer

• Peak Power: 1650 watts
• RMS Power: 550 watts
• Impedance: Dual 4 ohm
• Hybrid Polypropylene-Treated Paper cone
• TPE Surround
• Mount depth: 5.41"
• Sensitivity: 83 dB

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Kicker Comp 15 (43C154)

500W Peak (250W RMS) 15" Comp Series Single 4-ohm Subwoofer

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Kicker Comp 15 (43C154)

500W Peak (250W RMS) 15" Comp Series Single 4-ohm Subwoofer

• Peak Power: 500 watts
• RMS Power: 250 watts
• Impedance: Single 4 ohm
• Injection Molded Polypropylene cone
• Foam surround
• Mount depth: 7-7/16"
• Sensitivity: 90.3 dB

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Sundown Audio X-10 v.3 D1 10" (X10V3D1)

5000W Peak (2500W RMS) 10" X Series Dual 1-ohm Car Subwoofer (SW-XV310D1)

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Sundown Audio X-10 v.3 D1 10" (X10V3D1)

5000W Peak (2500W RMS) 10" X Series Dual 1-ohm Car Subwoofer (SW-XV310D1)

• Peak Power: 5000 watts
• RMS Power: 2500 watts
• Impedance: Dual 1 ohm
• Pressed Paper Cone
• Mega Roll V2 Surround
• Mount depth: 9.4"
• Sensitivity: 83.8 dB

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Orion HCCA102

8000W Peak (2000W RMS) 10" HCCA Series Dual 2-ohm Car Subwoofer

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Orion HCCA102

8000W Peak (2000W RMS) 10" HCCA Series Dual 2-ohm Car Subwoofer

• Peak Power: 8000 watts
• RMS Power: 2000 watts
• Impedance: Dual 2 ohm
• UV-Resistant Polypropylene Cone
• Nitrile Butadiene Rubber (NBR)-Foam Surround
• Mount depth: 8.425"
• Sensitivity: 86.51 dB

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Rockford Fosgate Prime R2D2-12

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

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Rockford Fosgate Prime R2D2-12

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

• Peak Power: 500 watts
• RMS Power: 250 watts
• Impedance: Dual 2 ohm
• Mica Injected Polypropylene - MIPP Cone
• Poly-Foam Surround
• Mount depth: 5.067"
• Sensitivity: 87 dB

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DS18 EXL-X6.2D

800W Peak (400W RMS) 6.5" EXL-X Series Dual 2-ohm Car Subwoofer

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DS18 EXL-X6.2D

800W Peak (400W RMS) 6.5" EXL-X Series Dual 2-ohm Car Subwoofer

• Peak Power: 800 watts
• RMS Power: 400 watts
• Impedance: Dual 2 ohm
• Non-Pressed Paper Cone
• Foam Surround
• Mount depth: 4.25"
• Sensitivity: 89.8 dB

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• Peak Power: 800 watts
• RMS Power: 400 watts
• Impedance: Dual 2 ohm
• Non-Pressed Paper Cone
• Foam Surround
• Mount depth: 4.25"
• Sensitivity: 89.8 dB

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Kicker CWCD124 (50CWCD124)

600W Peak (300W RMS) 12" CompC Series Dual 4-ohm Car Subwoofer

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Kicker CWCD124 (50CWCD124)

600W Peak (300W RMS) 12" CompC Series Dual 4-ohm Car Subwoofer

• Peak Power: 600 watts
• RMS Power: 150-300 watts
• Impedance: Dual 4 ohm
• Injection Molded Polypropylene Cone
• Ribbed Polyurethane Surround
• Mount depth: 5-3/4"
• Sensitivity: 87.1 dB

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DC Audio 8M4D2

1600W Peak (800W RMS) 8" M4 Series Dual 2-ohm Car Subwoofer

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DC Audio 8M4D2

1600W Peak (800W RMS) 8" M4 Series Dual 2-ohm Car Subwoofer

• Peak Power: 1600 watts
• RMS Power: 800 watts
• Impedance: Dual 2 ohm
• Non-Pressed Paper Cone
• Multi-layered Polymer Foam Surround
• Mount depth: 7.0"
• Sensitivity: 78.4 dB

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Hifonics Elite 8" (HEW8D2)

1200W Peak (600W RMS) 8" Hifonics Elite Series Dual 2-ohm Subwoofer

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Hifonics Elite 8" (HEW8D2)

1200W Peak (600W RMS) 8" Hifonics Elite Series Dual 2-ohm Subwoofer

• Peak Power: 1200 watts
• RMS Power: 600 watts
• Impedance: Dual 2 ohm
• Polypropylene Cone
• Double Stitched Foam Surround
• Mount depth: 5.66"
• Sensitivity: 81.2 dB

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$169.00

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Cerwin Vega H7124D

1400W Peak (250W RMS) 12" HED Series Dual 4-ohm Subwoofer

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Cerwin Vega H7124D

1400W Peak (250W RMS) 12" HED Series Dual 4-ohm Subwoofer

• Peak Power: 1400 watts
• RMS Power: 250 watts
• Impedance: Dual 4 ohm
• Carbon Fiber Polypropylene Cone
• Stitched Rubber Surround
• Mount depth: 5.35"
• Sensitivity: 87.0 dB

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Hertz MPS 300 S2

1000W Peak (500W RMS) 12" Mille Pro Series Single 2-ohm Shallow Car Subwoofer

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Hertz MPS 300 S2

1000W Peak (500W RMS) 12" Mille Pro Series Single 2-ohm Shallow Car Subwoofer

• Peak Power: 1000 watts
• RMS Power: 500 watts
• Impedance: Single 2 ohm
• Polypropylene Cone material
• Rubber Surround material
• Mount depth: 3.46"
• Sensitivity: 84.5 dB

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-14% $599.99

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DS18 IXS12.2D

1600W Peak (800W RMS) 12" IXS Series Dual 2-ohm Shallow Car Subwoofer

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DS18 IXS12.2D

1600W Peak (800W RMS) 12" IXS Series Dual 2-ohm Shallow Car Subwoofer

• Peak Power: 1600 watts
• RMS Power: 800 watts
• Impedance: Dual 2 ohm
• Paper Cone
• Rubber Surround
• Mount depth: 4.33"
• Sensitivity: 85 dB

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$263.95

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Sundown Audio E8 v.6 D4 8" (E8V6D4)

800W Peak (400W RMS) 8" E Series Dual 4-ohm Car Subwoofer (SW-EV68D4)

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Sundown Audio E8 v.6 D4 8" (E8V6D4)

800W Peak (400W RMS) 8" E Series Dual 4-ohm Car Subwoofer (SW-EV68D4)

• Peak Power: 800 watts
• RMS Power: 400 watts
• Impedance: Dual 4 ohm
• Pressed Paper Cone
• Pressed Foam Surround
• Mount depth: 4.98"
• Sensitivity: 81.3 dB

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Cerwin Vega ST124D

2000W Peak (1000W RMS) 12" Stroker Series Dual 4-ohm Subwoofer

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Cerwin Vega ST124D

2000W Peak (1000W RMS) 12" Stroker Series Dual 4-ohm Subwoofer

• Peak Power: 2000 watts
• RMS Power: 1000 watts
• Impedance: Dual 4 ohm
• Treated Semi-Pressed Pulped cone
• Treated Foam surround
• Mount depth: 8.1"
• Sensitivity: 84.8 dB

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Deaf Bonce Machete ML-12S D2

600W Peak (300W RMS) 12” Machete Series Dual 2-ohm Car Subwoofer

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Deaf Bonce Machete ML-12S D2

600W Peak (300W RMS) 12” Machete Series Dual 2-ohm Car Subwoofer

• Peak Power: 600 watts
• RMS Power: 300 watts
• Pressed Paper Cone
• Foam Surround
• Impedance: Dual 2 ohm
• Mount depth: 5.06"
• Sensitivity: 88.90 dB

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$84.90

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American Bass TITAN-1544

3000W Peak (1500W RMS) 15" Titan Series Dual 4-ohm Car Subwoofer

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American Bass TITAN-1544

3000W Peak (1500W RMS) 15" Titan Series Dual 4-ohm Car Subwoofer

• Peak Power: 3000 watts
• RMS Power: 1500 watts
• Impedance: Dual 4 ohm
• Kevlar Fiber-Enforced Non-Pressed Paper cone
• Foam surround
• Mount depth: 7.63"
• Sensitivity: 87.9 dB

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List price $302.28

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FAQ for Universal Subwoofers in 1971 Spitfire

Q: Can I upgrade or change the Universal Subwoofers in 1971 Triumph Spitfire?

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

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Universal Subwoofers for 1971 Triumph Spitfire

Kicker L7R102 (45L7R102)

Kicker L7R102 (45L7R102)

Rockford Fosgate Power T1 T1D415

Rockford Fosgate Power T1 T1D415

Sundown Audio SA-18 v.2 D4 18" (SA18V2D4)

Sundown Audio SA-18 v.2 D4 18" (SA18V2D4)

Hertz CS 300 S2

Hertz CS 300 S2

Cerwin-Vega H10DV4

Cerwin-Vega H10DV4

Kicker Comp 15 (43C154)

Kicker Comp 15 (43C154)

Sundown Audio X-10 v.3 D1 10" (X10V3D1)

Sundown Audio X-10 v.3 D1 10" (X10V3D1)

Orion HCCA102

Orion HCCA102

Rockford Fosgate Prime R2D2-12

Rockford Fosgate Prime R2D2-12

DS18 EXL-X6.2D

DS18 EXL-X6.2D

Kicker CWCD124 (50CWCD124)

Kicker CWCD124 (50CWCD124)

DC Audio 8M4D2

DC Audio 8M4D2

Hifonics Elite 8" (HEW8D2)

Hifonics Elite 8" (HEW8D2)

Cerwin Vega H7124D

Cerwin Vega H7124D

Hertz MPS 300 S2

Hertz MPS 300 S2

DS18 IXS12.2D

DS18 IXS12.2D

Sundown Audio E8 v.6 D4 8" (E8V6D4)

Sundown Audio E8 v.6 D4 8" (E8V6D4)

Cerwin Vega ST124D

Cerwin Vega ST124D

Deaf Bonce Machete ML-12S D2

Deaf Bonce Machete ML-12S D2

American Bass TITAN-1544

American Bass TITAN-1544

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