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1977 Jeep J20

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Subwoofers and enclosures, specifically designed for your 1977 J20, as well as universal fit solutions

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Subwoofers and Boxes for 1977 Jeep J20

A subwoofer that works with, or is designed for, your 1977 Jeep J20 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.

Subwoofer bass packages

Universal Subwoofer Bass Packages

These packages include an amp, sub(s), an enclosure and amplifier wiring. They should fit your Jeep J20, 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 Jeep J20, 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 Jeep J20, 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.

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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 (72)
CompRT Series (43)
S Series (43)
W3 v3 Series (40)
CompR Series (38)
CompC Series (35)
SA Series (35)
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Z Series (18)
W0 v3 Series (17)
Reference Series (16)
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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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Alpine W12S4

750W Peak (250W RMS) 12" Bass Series Single 4-ohm Car Subwoofer

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Alpine W12S4

750W Peak (250W RMS) 12" 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: 5-5/16"
• Sensitivity: 87.9 dB

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Hifonics Elite 8" (HEW8D4)

1200W Peak (600W RMS) 8" Hifonics Elite Series Dual 4-ohm Subwoofer

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Hifonics Elite 8" (HEW8D4)

1200W Peak (600W RMS) 8" Hifonics Elite Series Dual 4-ohm Subwoofer

• Peak Power: 1200 watts
• RMS Power: 600 watts
• Impedance: Dual 4 ohm
• Polypropylene Cone
• Double Stitched Foam Surround
• Mount depth: 5.66"
• Sensitivity: 80 dB

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• Peak Power: 1200 watts
• RMS Power: 600 watts
• Impedance: Dual 4 ohm
• Polypropylene Cone
• Double Stitched Foam Surround
• Mount depth: 5.66"
• Sensitivity: 80 dB

American Bass XFL 10" (XFL-1044)

2000W Peak (1000W RMS) 10" XFL Series Dual 4-ohm Car Subwoofer

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American Bass XFL 10" (XFL-1044)

2000W Peak (1000W RMS) 10" XFL Series Dual 4-ohm Car Subwoofer

• Peak Power: 2000 watts
• RMS Power: 1000 watts
• Impedance: Dual 4 ohm
• Pressed Paper cone
• Foam surround
• Mount depth: 7.38"
• Sensitivity: 82.7 dB

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Cerwin Vega V154DV2

1500W Peak (550W RMS) 15" Vega Series Dual 4-ohm Subwoofer

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Cerwin Vega V154DV2

1500W Peak (550W RMS) 15" Vega Series Dual 4-ohm Subwoofer

• Peak Power: 1500 watts
• RMS Power: 550 watts
• Impedance: Dual 4 ohm
• Carbon Fiber Polypropylene Cone
• Santoprene Rubber Surround
• Mount depth: 7.28"
• Sensitivity: 88.5 dB

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Kicker CWTB102 (46CWTB102)

800W Peak (400W RMS) Loaded Dual 10" Subwoofer and Passive Radiator Tube Enclosure

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Kicker CWTB102 (46CWTB102)

800W Peak (400W RMS) Loaded Dual 10" Subwoofer and Passive Radiator Tube Enclosure

• Enclosure with 2 10" TB Series Subwoofer
• Loaded with active CompR woofer and passive Reflex sub
• 400 watts RMS (800 watts Peak)
• Final Impedance: 2-ohm
• Dimensions: 10-5/8" L x 17-1/16 H1 x 10-3/4 H2 x 16-9/16" W2

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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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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

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JL Audio 12W1v3-2

300W RMS 12" W1v3 Series Single 2-ohm Car Subwoofer

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JL Audio 12W1v3-2

300W RMS 12" W1v3 Series Single 2-ohm Car Subwoofer


• RMS Power: 300 watts
• Impedance: Single 2 ohm
• Mica Injected Polypropylene - MIPP Cone
• Nitrile Butadiene Rubber NBR Surround
• Mount depth: 5.41"
• Sensitivity: 85.9 dB

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Kicker CWQ154 (51CWQ154)

2400W Peak (1200W RMS) 15" CompQ Series Dual 4-ohm Subwoofer

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Kicker CWQ154 (51CWQ154)

2400W Peak (1200W RMS) 15" CompQ Series Dual 4-ohm Subwoofer

• Peak Power: 2400 watts
• RMS Power: 1200 watts
• Impedance: Dual 4 ohm
• SoloKon Polypropylene Cone
• Blue-stitched Santoprene Rubber Surround
• Mount depth: 8-15/1"
• Sensitivity: 88 dB

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Tru Spec Elite SINGLE Z8 8"

Empty Single 8" Vented Enclosure for Sundown Z8 8" Subwoofers

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Tru Spec Elite SINGLE Z8 8"

Empty Single 8" Vented Enclosure for Sundown Z8 8" Subwoofers

• 8" Single Ported Subwoofer Enclosure
• Medium Density Fiberboard (MDF) construction
• Total box volume: 1 cubic feet
• Designed for use with Sundown Z8 subwoofers (Sold separately)

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• 8" Single Ported Subwoofer Enclosure
• Medium Density Fiberboard (MDF) construction
• Total box volume: 1 cubic feet
• Designed for use with Sundown Z8 subwoofers (Sold separately)

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

Diamond Audio DS102

500W Peak (250W RMS) 10" Diamond Shallow Series Dual 2-ohm Car Subwoofer

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Diamond Audio DS102

500W Peak (250W RMS) 10" Diamond Shallow Series Dual 2-ohm Car Subwoofer

• Peak Power: 500 watts
• RMS Power: 250 watts
• Impedance: Dual 2 ohm
• True Fiber Weaved Treated Paper Backed Parabolic Cone
• High-Density Nitrile Butadiene Rubber NBR Half-Roll Surround
• Mount depth: 3"
• Sensitivity: 86.1 dB

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• Peak Power: 500 watts
• RMS Power: 250 watts
• Impedance: Dual 2 ohm
• True Fiber Weaved Treated Paper Backed Parabolic Cone
• High-Density Nitrile Butadiene Rubber NBR Half-Roll Surround
• Mount depth: 3"
• Sensitivity: 86.1 dB

Sundown Audio SA-12 v.2 D4 12" (SA12V2D4)

2500W Peak (1250W RMS) 12" SA Series Dual 4-ohm Car Subwoofer (SW-SAV212D4)

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Sundown Audio SA-12 v.2 D4 12" (SA12V2D4)

2500W Peak (1250W RMS) 12" SA Series Dual 4-ohm Car Subwoofer (SW-SAV212D4)

• Peak Power: 2500 watts
• RMS Power: 1250 watts
• Impedance: Dual 4 ohm
• Competition Grade Paper Cone
• Foam Surround
• Mount depth: 7.35"
• Sensitivity: 85.03 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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Wet Sounds ZERO 10 ENC

Empty Single 10" Sealed Enclosure for ZERO 10 Subwoofers

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Wet Sounds ZERO 10 ENC

Empty Single 10" Sealed Enclosure for ZERO 10 Subwoofers

• 10" Single Sealed Truck Subwoofer Enclosure
• Medium Density Fiberboard (MDF) construction
• Compatible with ZERO 10 subwoofers (Sold separately)

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$299.99

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American Bass VFL Comp Signature 18" (VFLCOMP-1811)

10000W Peak (5000W RMS) 18" VFL Competition Series Dual 1-ohm Subwoofer

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American Bass VFL Comp Signature 18" (VFLCOMP-1811)

10000W Peak (5000W RMS) 18" VFL Competition Series Dual 1-ohm Subwoofer

• Peak Power: 10000 watts
• RMS Power: 5000 watts
• Impedance: Dual 1 ohm
• Kevlar Fiber-Enforced Non-Pressed Paper cone
• High Roll Foam surround
• Mount depth: 11"

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List price $1618.44
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AudioControl SPC-10S2

600W RMS 10" Space Series Single 2-ohm Shallow Car Subwoofer

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AudioControl SPC-10S2

600W RMS 10" Space Series Single 2-ohm Shallow Car Subwoofer

• RMS Power: 600 watts
• Impedance: Single 2 ohm
• Fiber Matrix Injection Molded Polypropylene Cone
• Rubber Surround
• Mount depth: 3.5"
• Sensitivity: 86.09 dB

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Rockford Fosgate Power T1 T1D215

2000W Peak (1000W RMS) 15" Power Series Dual 2-ohm Car Subwoofer

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Rockford Fosgate Power T1 T1D215

2000W Peak (1000W RMS) 15" Power Series Dual 2-ohm Car Subwoofer

• Peak Power: 2000 watts
• RMS Power: 1000 watts
• Impedance: Dual 2 ohm
• Kevlar Reinforced Pulp Paper Cone
• Santoprene Rubber Surround
• Mount depth: 8.39"
• Sensitivity: 88 dB

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NVX XCW152

4000W Peak (2000W RMS) 15" X-Series Dual 2-ohm SPL Subwoofer

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NVX XCW152

4000W Peak (2000W RMS) 15" X-Series Dual 2-ohm SPL Subwoofer

• Peak Power: 4000 watts
• RMS Power: 2000 watts
• Impedance: Dual 2 ohm
• Enhanced Woven Fiber Paper Composite Cone
• Custom High Roll Foam Surround
• 30 mm Xmax (One Way)
• Sensitivity: 87.3 dB

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List price $659.99
-24% $499.99

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Sundown Audio M-10 D1 10" (M10D1)

4000W Peak (2000W RMS) 10" M Series Dual 1-ohm Car Subwoofer (SW-M10D1)

SW-M10D1 big
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Sundown Audio M-10 D1 10" (M10D1)

4000W Peak (2000W RMS) 10" M Series Dual 1-ohm Car Subwoofer (SW-M10D1)

• Peak Power: 4000 watts
• RMS Power: 2000 watts
• Impedance: Dual 1 ohm
• Polypropylene cone
• High Roll Foam surround
• Mount depth: 10.09"
• Sensitivity: 78.95 dB

shipping truck icon Free shipping in USA. Provide zip for delivery date.
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VIP Product Get $55.00 in rewards to spend later

Universal Icon Universal – fits most vehicles.

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List price $659.99
-17% $549.99

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    FAQ for Subwoofer and Sub Box Upgrades in 1977 J20

    Q: Can I upgrade or change the Subwoofer and Sub Box Upgrades in 1977 Jeep J20?

    A: Yes this page includes all the best Subwoofer and Sub Box Upgrades that work in your J20.

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