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 (261)

400–799.99 watts (407)

800–1,199.99 watts (153)

1,200–1,999.99 watts (69)

2,000 watts or more (203)

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 (56)

500–799.99 watts (162)

800–1,199.99 watts (184)

1,200–1,599.99 watts (176)

1,600–2,399.99 watts (172)

2,400 watts or more (257)

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 (24)

Power Series (22)

Apocalypse Series (21)

W7 Anniversary Edition Series (12)

Prime Series (11)

Reference Series (11)

Solo-Baric L7S Series (11)

Solo-Baric L7T Series (11)

Nightshade (NS) Series (9)

Power T1 Series (9)

Prime R2 Series (9)

TW3 Shallow Mount Series (9)

Diamond Elite Series (8)

Hifonics Elite Series (8)

Hippo Series (8)

Level 4 Series (8)

Mille Pro Series (8)

SA Classic Series (8)

Solo-Baric L7R Series (8)

IXS Shallow 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 (910)

Yes (202)

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) (864)

Single (1 voice coil) (265)

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 (1,070)

Square (63)

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 (242)

1–1.99 cubic feet (108)

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 (83)

1–1.99 cubic feet (138)

2 cubic feet or more (127)

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 (1,033)

Sealed (847)

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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Condition

Brand New (996)

Like New & Used (141)

Availability

In Stock (861)

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In stock. Ships from manufacturer (145)

Available to order (105)

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Cerwin-Vega V8DV2

2400W Peak (800W RMS) 8" Vega Series Dual 2-ohm Subwoofer

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Cerwin-Vega V8DV2

2400W Peak (800W RMS) 8" Vega Series Dual 2-ohm Subwoofer

• Peak Power: 2400 watts
• RMS Power: 800 watts
• Impedance: Dual 2 ohm
• Carbon Fiber Polypropylene Cone
• Santoprene Rubber Surround
• Mount depth: 5.43"
• Sensitivity: 85 dB

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Sundown Audio X-8 v.3 D4 8" (X8V3D4)

800W RMS 8" X Series V3 Dual 2-ohm Car Subwoofer (XV38D4)

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Sundown Audio X-8 v.3 D4 8" (X8V3D4)

800W RMS 8" X Series V3 Dual 2-ohm Car Subwoofer (XV38D4)

• RMS Power: 800 watts
• Impedance: Dual 4 ohm
• Polypropylene Cone
• FEA optimized spider and surround
• Mount depth: 6.8"
• Sensitivity: 81.8 dB

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• RMS Power: 800 watts
• Impedance: Dual 4 ohm
• Polypropylene Cone
• FEA optimized spider and surround
• Mount depth: 6.8"
• Sensitivity: 81.8 dB

Sundown Audio U-12 v.2 D2 12" (U12V2D2)

4000W Peak (2000W RMS) 12" U Series Dual 2-ohm Car Subwoofer (SW-UV212D2)

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Sundown Audio U-12 v.2 D2 12" (U12V2D2)

4000W Peak (2000W RMS) 12" U Series Dual 2-ohm Car Subwoofer (SW-UV212D2)

• Peak Power: 4000 watts
• RMS Power: 2000 watts
• Impedance: Dual 2 ohm
• Pressed Paper Cone
• Double-Stitched Surround
• Mount depth: 8.43"
• Sensitivity: 85.19 dB

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Massive Audio GTX104H (Open Box, Great)

1600W Peak (800W RMS) 10" GTX Series Dual 4-ohm Car Subwoofer

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Massive Audio GTX104H (Open Box, Great)

1600W Peak (800W RMS) 10" GTX Series Dual 4-ohm Car Subwoofer

• Peak Power: 1600 watts
• RMS Power: 800 watts
• Impedance: Dual 4 ohm
• UV-treated Non-Pressed Paper cone
• Pressed Foam surround
• Mount depth: 6.34"
• Sensitivity: 87.5 dB

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• Peak Power: 1600 watts
• RMS Power: 800 watts
• Impedance: Dual 4 ohm
• UV-treated Non-Pressed Paper cone
• Pressed Foam surround
• Mount depth: 6.34"
• Sensitivity: 87.5 dB

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JL Audio 13W3v3-2

600W RMS 13.5" W3v3 Series Single 2-Ohm Car Subwoofer

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JL Audio 13W3v3-2

600W RMS 13.5" W3v3 Series Single 2-Ohm Car Subwoofer

• Sensitivity: 87.63 dB
• Mounting depth: 7.63"
• Injection-molded, mineral-filled polypropylene cone
• Nitrile butadiene rubber surround
•Customization trim ring
• Floating Cone Attach Method
• DMA Optimized Motor

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Alpine W10S4

750W Peak (250W RMS) 10" Bass Series Single 4-ohm Car Subwoofer

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Alpine W10S4

750W Peak (250W RMS) 10" Bass Series Single 4-ohm Car Subwoofer

• Peak Power: 750 watts
• RMS Power: 250 watts
• Impedance: Single 4 ohm
• Mica Injected Polypropylene - MIPP Cone
• Poly-Foam Surround
• Mount depth: 5-1/16"
• Sensitivity: 86.6 dB

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Kicker L7X82 (49L7X82)

800W RMS 8" SoloX Series Dual 2-ohm Subwoofer

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Kicker L7X82 (49L7X82)

800W RMS 8" SoloX Series Dual 2-ohm Subwoofer

• RMS Power: 400 - 800 watts
• Impedance: Dual 2 ohm
• Double-pressed pulp Cone
• UV-resistant Santoprene Surround
• Mount depth: 7-15/16"

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• RMS Power: 400 - 800 watts
• Impedance: Dual 2 ohm
• Double-pressed pulp Cone
• UV-resistant Santoprene Surround
• Mount depth: 7-15/16"

Massive Audio SUMMOXL104

3000W Peak (1500W RMS) 10" SUMMO Series Dual 4-ohm Car Subwoofer

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Massive Audio SUMMOXL104

3000W Peak (1500W RMS) 10" SUMMO Series Dual 4-ohm Car Subwoofer

• Peak Power: 3000 watts
• RMS Power: 1500 watts
• Impedance: Dual 4 ohm
• Non-Pressed Paper Cone
• Foam Surround
• Mount depth: 6.81"
• Sensitivity: 90.3 dB

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Sundown Audio M-10 D2 10" (M10D2)

4000W Peak (2000W RMS) 10" M Series Dual 2-ohm Car Subwoofer (SW-M10D2)

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Sundown Audio M-10 D2 10" (M10D2)

4000W Peak (2000W RMS) 10" M Series Dual 2-ohm Car Subwoofer (SW-M10D2)

• Peak Power: 4000 watts
• RMS Power: 2000 watts
• Impedance: Dual 2 ohm
• Polypropylene cone
• High Roll Foam surround
• Mount depth: 10.09"
• Sensitivity: 79.14 dB

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Earthquake Sound EQ10-8

300W Peak (160W RMS) 10” EQ Series Subwoofer

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Earthquake Sound EQ10-8

300W Peak (160W RMS) 10” EQ Series Subwoofer

• Peak Power: 300 watts
• RMS Power: 160 watts
• Paper Cone
• Cloth Surround
• Impedance: Single 8 ohm
• Mount depth: 4.15"
• Sensitivity: 94 dB

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Kicker L7S82 (44L7S82) (Open Box, Great)

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

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Kicker L7S82 (44L7S82) (Open Box, Great)

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

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• 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

NVX ESW104

500W Peak (250W RMS) 10" E-Series Single 4-ohm Car Subwoofer

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NVX ESW104

500W Peak (250W RMS) 10" E-Series Single 4-ohm Car Subwoofer

• Peak Power: 500 watts
• RMS Power: 250 watts
• Impedance: Single 4 ohm
• Enhanced Pressed Paper Cone
• High Roll Foam Surround
• Mount depth: 4.92"
• Sensitivity: 85 dB

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Kicker Comp 10 (43C104)

300W Peak (150W RMS) 10" Comp Series Single 4-ohm Car Subwoofer

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Kicker Comp 10 (43C104)

300W Peak (150W RMS) 10" Comp Series Single 4-ohm Car Subwoofer

• Peak Power: 300 watts
• RMS Power: 150 watts
• Impedance: Single 4 ohm
• SoloKon Polypropylene Cone
• Ribbed Poly-Foam Surround
• Mount depth: 5 1/16"
• Sensitivity: 86.2 dB

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Kicker L7S102 (44L7S102) (Open Box, Great)

1200W Peak (600W RMS) 10” Solo-Baric L7S Series Dual 2-ohm Subwoofer

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Kicker L7S102 (44L7S102) (Open Box, Great)

1200W Peak (600W RMS) 10” Solo-Baric L7S Series Dual 2-ohm Subwoofer

• Peak Power: 1200 watts
• RMS Power: 600 watts
• Impedance: Dual 2 ohm
• Injection Molded Polypropylene Cone
• Santoprene Rubber Surround
• Mount depth: 6-1/4"
• Sensitivity: 85.87 dB

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• Peak Power: 1200 watts
• RMS Power: 600 watts
• Impedance: Dual 2 ohm
• Injection Molded Polypropylene Cone
• Santoprene Rubber Surround
• Mount depth: 6-1/4"
• Sensitivity: 85.87 dB

Diamond Audio DES82 (Open Box, Great)

500W Peak (250W RMS) 8" DES Series Dual 2-ohm Car Subwoofer

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Diamond Audio DES82 (Open Box, Great)

500W Peak (250W RMS) 8" DES Series Dual 2-ohm Car Subwoofer

• Peak Power: 500 watts
• RMS Power: 250 watts
• Fiber-Reinforced High Strength Paper Cone
• Impedance: Dual 2 ohm
• Sensitivity: 82 dB

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• Peak Power: 500 watts
• RMS Power: 250 watts
• Fiber-Reinforced High Strength Paper Cone
• Impedance: Dual 2 ohm
• Sensitivity: 82 dB

Sundown Audio M-15 D2 15" (M15D2)

4000W Peak (2000W RMS) 15" M Series Dual 2-ohm Car Subwoofer (SW-M15D2)

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Sundown Audio M-15 D2 15" (M15D2)

4000W Peak (2000W RMS) 15" M Series Dual 2-ohm Car Subwoofer (SW-M15D2)

• Peak Power: 4000 watts
• RMS Power: 2000 watts
• Impedance: Dual 2 ohm
• Polypropylene Cone
• High Roll Foam Surround
• Mount depth: 12.06"
• Sensitivity: 83.30 dB

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List price $791.99

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Kicker CWRT674 (48CWRT674)

300W Peak (150W RMS) 6.75” CompRT Series Dual 4-ohm Shallow Car Subwoofer

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Kicker CWRT674 (48CWRT674)

300W Peak (150W RMS) 6.75” CompRT Series Dual 4-ohm Shallow Car Subwoofer

• Peak Power: 300 watts
• RMS Power: 150 watts
• Impedance: Dual 4 ohm
• UV-Resistant Polypropylene Cone
• UV-resistant Santoprene Surround
• Mount depth: 2-3/4"
• Sensitivity: 82.6 dB

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2026-06-28 23:59:00

List price $149.99

Save $46.03

-31% $103.96

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Kicker L7XS122 (52L7XS122)

3000W RMS 12" SoloXS L7XS Series Dual 2-ohm Square Car Subwoofer

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Kicker L7XS122 (52L7XS122)

3000W RMS 12" SoloXS L7XS Series Dual 2-ohm Square Car Subwoofer

• RMS Power: 1500 - 3000 watts
• Impedance: Dual 2 ohm
• Double-pressed pulp Cone
• Nitrile Butadiene Rubber NBR Surround
• Mount depth: 10-1/8"

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• RMS Power: 1500 - 3000 watts
• Impedance: Dual 2 ohm
• Double-pressed pulp Cone
• Nitrile Butadiene Rubber NBR Surround
• Mount depth: 10-1/8"

Sundown Audio SA-12 Classic D4 12" (SA12CLD4)

2000W Peak (1000W RMS) 12" SA Classic Series Dual 4-ohm Car Subwoofer (SW-SACL12D4)

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Sundown Audio SA-12 Classic D4 12" (SA12CLD4)

2000W Peak (1000W RMS) 12" SA Classic Series Dual 4-ohm Car Subwoofer (SW-SACL12D4)

• Peak Power: 2000 watts
• RMS Power: 1000 watts
• Impedance: Dual 4 ohm
• Competition Grade Paper Cone
• Treated Foam Surround
• Mount depth: 6.5"
• Sensitivity: 84.22 dB

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List price $407.99

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Cerwin-Vega VMAX65D4

400W Peak (200W RMS) 6.5” VMAXX Series Dual 4-ohm Subwoofer

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Cerwin-Vega VMAX65D4

400W Peak (200W RMS) 6.5” VMAXX Series Dual 4-ohm Subwoofer

• Peak Power: 400 watts
• RMS Power: 200 watts
• Treated Semi-Pressed Pulped Cone
• Treated Foam Surround
• Impedance: Dual 4 ohm
• Mount depth: 4.25"
• Sensitivity: 83.5 dB

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List price $155.99

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FAQ for Universal Subwoofers in 1994 Sephia

Q: Can I upgrade or change the Universal Subwoofers in 1994 Kia Sephia?

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

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Universal Subwoofers for 1994 Kia Sephia

Cerwin-Vega V8DV2

Cerwin-Vega V8DV2

Sundown Audio X-8 v.3 D4 8" (X8V3D4)

Sundown Audio X-8 v.3 D4 8" (X8V3D4)

Sundown Audio U-12 v.2 D2 12" (U12V2D2)

Sundown Audio U-12 v.2 D2 12" (U12V2D2)

Massive Audio GTX104H (Open Box, Great)

Massive Audio GTX104H (Open Box, Great)

JL Audio 13W3v3-2

JL Audio 13W3v3-2

Alpine W10S4

Alpine W10S4

Kicker L7X82 (49L7X82)

Kicker L7X82 (49L7X82)

Massive Audio SUMMOXL104

Massive Audio SUMMOXL104

Sundown Audio M-10 D2 10" (M10D2)

Sundown Audio M-10 D2 10" (M10D2)

Earthquake Sound EQ10-8

Earthquake Sound EQ10-8

Kicker L7S82 (44L7S82) (Open Box, Great)

Kicker L7S82 (44L7S82) (Open Box, Great)

NVX ESW104

NVX ESW104

Kicker Comp 10 (43C104)

Kicker Comp 10 (43C104)

Kicker L7S102 (44L7S102) (Open Box, Great)

Kicker L7S102 (44L7S102) (Open Box, Great)

Diamond Audio DES82 (Open Box, Great)

Diamond Audio DES82 (Open Box, Great)

Sundown Audio M-15 D2 15" (M15D2)

Sundown Audio M-15 D2 15" (M15D2)

Kicker CWRT674 (48CWRT674)

Kicker CWRT674 (48CWRT674)

Kicker L7XS122 (52L7XS122)

Kicker L7XS122 (52L7XS122)

Sundown Audio SA-12 Classic D4 12" (SA12CLD4)

Sundown Audio SA-12 Classic D4 12" (SA12CLD4)

Cerwin-Vega VMAX65D4

Cerwin-Vega VMAX65D4

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