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1981 Dodge B250

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Universal loaded and/or powered sub box enclosures that fit most vehicles, including your 1981 B250.

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

Universal Sub Boxes (Loaded/Powered) for 1981 Dodge B250


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JBL SUBBP12AM + Free Belva 8 Gauge Amp Kit

450W Max Powered 12" Loaded Subwoofer Ported Enclosure System

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JBL SUBBP12AM + Free Belva 8 Gauge Amp Kit

450W Max Powered 12" Loaded Subwoofer Ported Enclosure System

• 12" GT Series Subwoofer
• GT Series Mono block Car Amplifier
• 450W Peak
• 150W RMS
• 12" Single Ported Subwoofer Enclosure
• Variable low-pass filter (40-200 Hz, 24 dB/Octave)

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98
List price $469.94
-23% $359.95

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• 12" GT Series Subwoofer
• GT Series Mono block Car Amplifier
• 450W Peak
• 150W RMS
• 12" Single Ported Subwoofer Enclosure
• Variable low-pass filter (40-200 Hz, 24 dB/Octave)

Limited time!

NVX NE102S w/ JL Audio 10W1v3-4

Dual 10" Sealed 3/4" MDF Black Carpeted Subwoofer Enclosure – 1.2 Cu. Ft. with Polyfil and NVX Logo w/ 300W RMS 10" W1v3 Series Single 4-ohm Car Subwoofer

NE102S_10W1V34 big
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NVX NE102S w/ JL Audio 10W1v3-4

Dual 10" Sealed 3/4" MDF Black Carpeted Subwoofer Enclosure – 1.2 Cu. Ft. with Polyfil and NVX Logo w/ 300W RMS 10" W1v3 Series Single 4-ohm Car Subwoofer

• 10" Dual Sealed Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Internal box volume: 1.20 cubic feet
• Premium Black Carpet with Black NVX Logo

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8
List price $643.97
-23% $495.97

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• 10" Dual Sealed Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Internal box volume: 1.20 cubic feet
• Premium Black Carpet with Black NVX Logo

NVX - Worth the Envy - Direct to Consumer Car Audio
Lowest price in 30 days

(2) Rockford Fosgate P3D4-15 with Ported Dual Enclosure

(2) 1200 Watt Peak (600W RMS) 15" Punch P3 Series Dual 4-Ohm Car Subwoofer

(2) P3D4-15, 15DQV big
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(2) Rockford Fosgate P3D4-15 with Ported Dual Enclosure

(2) 1200 Watt Peak (600W RMS) 15" Punch P3 Series Dual 4-Ohm Car Subwoofer

• 1200W Peak
• 600W RMS
• Anodized Aluminum Heat Sinking Cone
• Santoprene Vertical Attach Surround Technique
• 4-Layer 2-1/2" Voice Coil
• Proprietary Spider Venting
• Includes Ported Dual Enclosure

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69
List price $879.97
-29% $623.99

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NVX Dual 12" Complete Bass System w/ Ported Box, Amp, and Wiring Kit

NVX Dual 12" Slot Ported Subwoofer Enclosure with 12" VS-Series v3 Car Subwoofer, N-Series Monoblock Amplifier and 4 Gauge Amplifier Wiring Kit

NE122P_BASSPACKAGEKIT big
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NVX Dual 12" Complete Bass System w/ Ported Box, Amp, and Wiring Kit

NVX Dual 12" Slot Ported Subwoofer Enclosure with 12" VS-Series v3 Car Subwoofer, N-Series Monoblock Amplifier and 4 Gauge Amplifier Wiring Kit

• Loaded Box with Subwoofer
• Includes Amplifier and Wiring Kit

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178
List price $935.95
-29% $664.63

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EXCLUSIVE

Belva BPKG212v2 1200W Dual 12” Subs + Ported Box + Amp Kit + 1 Farad Capacitor

1200 Watt Complete Car Audio Bass Package

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Belva BPKG212v2 1200W Dual 12” Subs + Ported Box + Amp Kit + 1 Farad Capacitor

1200 Watt Complete Car Audio Bass Package

• Includes Everything You Need: Subs, Box, Amp & Wires
• Dual 12" Belva Subwoofers
• Monoblock Amp
• Ported Enclosure
• Complete Amp Kit w/ RCAs

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164
List price $403.98
-23% $309.94

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• Includes Everything You Need: Subs, Box, Amp & Wires
• Dual 12" Belva Subwoofers
• Monoblock Amp
• Ported Enclosure
• Complete Amp Kit w/ RCAs

Limited time!

NVX NE122S w/ Kicker CWRT122 (48CWRT122) (Sold Individually)

Dual 12" Sealed 3/4" MDF Black Carpeted Subwoofer Enclosure – 2.0 Cu. Ft. with Polyfil and NVX Logo w/ 1000W Peak 12” CompRT Series Dual 2-ohm Shallow Subwoofer

NE122S_48CWRT122 big
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NVX NE122S w/ Kicker CWRT122 (48CWRT122) (Sold Individually)

Dual 12" Sealed 3/4" MDF Black Carpeted Subwoofer Enclosure – 2.0 Cu. Ft. with Polyfil and NVX Logo w/ 1000W Peak 12” CompRT Series Dual 2-ohm Shallow Subwoofer

• [12" Dual Sealed Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Internal box volume: 2.00 cubic feet
• Premium Black Carpet with Black NVX Logo

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7
List price $715.97
-30% $503.91

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• [12" Dual Sealed Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Internal box volume: 2.00 cubic feet
• Premium Black Carpet with Black NVX Logo

Limited time!

NVX NE122S w/ Kicker CWRT124 (48CWRT124) (Sold Individually)

Dual 12" Sealed 3/4" MDF Black Carpeted Subwoofer Enclosure – 2.0 Cu. Ft. with Polyfil and NVX Logo w/ 1000W Peak (500W RMS) 12" CompRT Series Dual 4-ohm Shallow Subwoofer

NE122S_48CWRT124 big
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NVX NE122S w/ Kicker CWRT124 (48CWRT124) (Sold Individually)

Dual 12" Sealed 3/4" MDF Black Carpeted Subwoofer Enclosure – 2.0 Cu. Ft. with Polyfil and NVX Logo w/ 1000W Peak (500W RMS) 12" CompRT Series Dual 4-ohm Shallow Subwoofer

• [12" Dual Sealed Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Internal box volume: 2.00 cubic feet
• Premium Black Carpet with Black NVX Logo

Purchase $400 or More of NVX and Save 15%!
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5
List price $715.97
-30% $503.91

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• [12" Dual Sealed Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Internal box volume: 2.00 cubic feet
• Premium Black Carpet with Black NVX Logo

Cerwin Vega VPSTX12 + Belva BAK82

VEGA 12" Shallow Powered Active Subwoofer, Spare Tire Application + 8 Gauge Premium Complete 2-Channel Amplifier Wiring Kit with RCA

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Cerwin Vega VPSTX12 + Belva BAK82

VEGA 12" Shallow Powered Active Subwoofer, Spare Tire Application + 8 Gauge Premium Complete 2-Channel Amplifier Wiring Kit with RCA

• 600W Max / 150W RMS
• Slim Design Allows Mounting Under Vehicle Seat
• High Output Slim Profile Subwoofer
• Cast Aluminum Enclosure
• Subsonic and Low Pass Filters
• Wired Bass Knob Included
• Includes Amp Wiring Kit

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100
List price $541.98
-20% $434.98

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• 600W Max / 150W RMS
• Slim Design Allows Mounting Under Vehicle Seat
• High Output Slim Profile Subwoofer
• Cast Aluminum Enclosure
• Subsonic and Low Pass Filters
• Wired Bass Knob Included
• Includes Amp Wiring Kit

Limited time!

NVX NE102S w/ Alpine S2-W10D2

Dual 10" Sealed 3/4" MDF Black Carpeted Subwoofer Enclosure – 1.2 Cu. Ft. with Polyfil and NVX Logo w/ 10" S-Series Dual 2-ohm Car Subwoofer

NE102S_S2W10D2 big
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NVX NE102S w/ Alpine S2-W10D2

Dual 10" Sealed 3/4" MDF Black Carpeted Subwoofer Enclosure – 1.2 Cu. Ft. with Polyfil and NVX Logo w/ 10" S-Series Dual 2-ohm Car Subwoofer

•10" Dual Sealed Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Internal box volume: 1.20 cubic feet
• Premium Black Carpet with Black NVX Logo

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List price $723.99
-30% $503.89

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•10" Dual Sealed Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Internal box volume: 1.20 cubic feet
• Premium Black Carpet with Black NVX Logo

Limited time!

NVX NE102P w/ Rockford Fosgate Punch P2 P2D4-10

Dual 10" Slot Ported 3/4" MDF Black Carpeted Subwoofer Enclosure – 2.90 Cu. Ft. with Polyfil and NVX Logo w/ 10" Punch Series Dual 4-ohm Car Subwoofer

NE102P_P2D410 big
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NVX NE102P w/ Rockford Fosgate Punch P2 P2D4-10

Dual 10" Slot Ported 3/4" MDF Black Carpeted Subwoofer Enclosure – 2.90 Cu. Ft. with Polyfil and NVX Logo w/ 10" Punch Series Dual 4-ohm Car Subwoofer

• 10" Dual Ported Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Internal box volume: 2.90 cubic feet
• Premium Black Carpet with Black NVX Logo

Purchase $400 or More of NVX and Save 15%!
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27
List price $515.97
-18% $423.97

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• 10" Dual Ported Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Internal box volume: 2.90 cubic feet
• Premium Black Carpet with Black NVX Logo

Limited time!

NVX NE102P w/ Rockford Fosgate Prime R2 R2SD2-10

Dual 10" Slot Ported 3/4" MDF Black Carpeted Subwoofer Enclosure – 2.90 Cu. Ft. with Polyfil and NVX Logo w/10" Prime Series Dual 2-ohm Shallow Car Subwoofer

NE102P_R2SD210 big
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NVX NE102P w/ Rockford Fosgate Prime R2 R2SD2-10

Dual 10" Slot Ported 3/4" MDF Black Carpeted Subwoofer Enclosure – 2.90 Cu. Ft. with Polyfil and NVX Logo w/10" Prime Series Dual 2-ohm Shallow Car Subwoofer

• 10" Dual Ported Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Internal box volume: 2.90 cubic feet
• Premium Black Carpet with Black NVX Logo

Purchase $400 or More of NVX and Save 15%!
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25
List price $475.97
-11% $423.97

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• 10" Dual Ported Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Internal box volume: 2.90 cubic feet
• Premium Black Carpet with Black NVX Logo

EXCLUSIVE

Belva BPKG210v2 1000W Dual 10” Subwoofers + Ported Box + Amp Kit + 1 Farad Cap

1000 Watt Complete Car Audio Bass Package

BB1D,BPKG210v2 big
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Belva BPKG210v2 1000W Dual 10” Subwoofers + Ported Box + Amp Kit + 1 Farad Cap

1000 Watt Complete Car Audio Bass Package

• Includes Everything You Need: Subs, Box, Amp & Wires
• Dual 10" Belva Subwoofers
• Monoblock Amp
• Ported Enclosure
• Complete Amp Kit w/ RCAs

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112
List price $379.98
-31% $264.07

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Only 3 Left!

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• Includes Everything You Need: Subs, Box, Amp & Wires
• Dual 10" Belva Subwoofers
• Monoblock Amp
• Ported Enclosure
• Complete Amp Kit w/ RCAs

Limited time!

NVX NE81P w/Sundown Audio U-8 D4 8" (U8D4)

Single 8" Slot Ported 3/4" MDF Black Carpeted Subwoofer Enclosure – 0.75 Cu. Ft. with Polyfil and NVX Logo w/600W RMS 8" U Series Dual 2-ohm Car Subwoofer

NE81P_UV18D4 big
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NVX NE81P w/Sundown Audio U-8 D4 8" (U8D4)

Single 8" Slot Ported 3/4" MDF Black Carpeted Subwoofer Enclosure – 0.75 Cu. Ft. with Polyfil and NVX Logo w/600W RMS 8" U Series Dual 2-ohm Car Subwoofer

• 8" Single Ported Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Internal box volume: .75 cubic feet
• Premium Black Carpet with Black NVX Logo

Purchase $400 or More of NVX and Save 15%!
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3
List price $509.98
-20% $409.98

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• 8" Single Ported Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Internal box volume: .75 cubic feet
• Premium Black Carpet with Black NVX Logo

Limited time!

NVX QB12SPA Amplified Subwoofer Enclosure and XKIT82 Amp Kit

1200W Single 12" Amplified Subwoofer Enclosure with Bass Knob and 8 Gauge 100% OFC Complete 2-Channel Amplifier Wiring Kit with RCA

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NVX QB12SPA Amplified Subwoofer Enclosure and XKIT82 Amp Kit

1200W Single 12" Amplified Subwoofer Enclosure with Bass Knob and 8 Gauge 100% OFC Complete 2-Channel Amplifier Wiring Kit with RCA

  • NVX QB12SPA 1200W Max Single 12-Inch Amplified Subwoofer Enclosure
  • Integrated 350W RMS Class D Amplifier with Ported Design
  • Includes Wired Remote Bass Knob for Easy Level Control
  • Full Spec 8 Gauge 100% Oxygen Free Copper Wiring Kit
  • Complete 2-Channel Installation Hardware with RCA Cables
Purchase $400 or More of NVX and Save 15%!
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61
List price $791.94
-29% $559.96

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  • NVX QB12SPA 1200W Max Single 12-Inch Amplified Subwoofer Enclosure
  • Integrated 350W RMS Class D Amplifier with Ported Design
  • Includes Wired Remote Bass Knob for Easy Level Control
  • Full Spec 8 Gauge 100% Oxygen Free Copper Wiring Kit
  • Complete 2-Channel Installation Hardware with RCA Cables
Limited time!

NVX VCW102 + Sealed Enclosure and Speaker Wire

1000W RMS 10" Dual 2-Ohm Car Subwoofer + Sealed Enclosure and Speaker Wire

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NVX VCW102 + Sealed Enclosure and Speaker Wire

1000W RMS 10" Dual 2-Ohm Car Subwoofer + Sealed Enclosure and Speaker Wire

• RMS Power: 1000 Watts
• 3” 4-Layer High Temperature Black Aluminum Voice coil
• Carbon Fiber Enhanced Non-Pressed Paper Cone
• Custom High Roll foam surround with black nylon stitching
• 165 oz. Triple-stacked High Energy ferrite magnet
• Die Cast aluminum vented basket
• Includes Sealed Subwoofer Enclosure

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194
List price $318.97
-26% $236.97

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NVX NE151S w/ Kicker 50CVX152 (Sold Individually)

Single 15" Sealed 3/4" MDF Black Carpeted Subwoofer Enclosure – 2.1 Cu. Ft. with Polyfil and NVX Logo w/ 2000W Peak (1000W RMS) 15" CompVX Series Dual 2-ohms Subwoofer

NE151S_50CVX152 big
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NVX NE151S w/ Kicker 50CVX152 (Sold Individually)

Single 15" Sealed 3/4" MDF Black Carpeted Subwoofer Enclosure – 2.1 Cu. Ft. with Polyfil and NVX Logo w/ 2000W Peak (1000W RMS) 15" CompVX Series Dual 2-ohms Subwoofer

15" Single Sealed Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Internal box volume: 2.10 cubic feet
• Premium Black Carpet with Black NVX Logo

Purchase $400 or More of NVX and Save 15%!
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List price $567.98
-12% $501.98

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15" Single Sealed Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Internal box volume: 2.10 cubic feet
• Premium Black Carpet with Black NVX Logo

Limited time!

NVX NE121S w/ Sundown Audio SAV312D2

Single 12" Sealed 3/4" MDF Black Carpeted Subwoofer Enclosure – 1.0 Cu. Ft. with Polyfil and NVX Logo w/ 3000W Peak (1500W RMS) 12" SA Series Dual 2-ohm Subwoofer

NE121S_SAV312D2 big
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NVX NE121S w/ Sundown Audio SAV312D2

Single 12" Sealed 3/4" MDF Black Carpeted Subwoofer Enclosure – 1.0 Cu. Ft. with Polyfil and NVX Logo w/ 3000W Peak (1500W RMS) 12" SA Series Dual 2-ohm Subwoofer

• 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%!
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2
List price $615.98
-19% $501.98

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• 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

Limited time!

NVX NE121S w/ Sundown Audio SAV312D4

Single 12" Sealed 3/4" MDF Black Carpeted Subwoofer Enclosure – 1.0 Cu. Ft. with Polyfil and NVX Logo w/ 3000W Peak (1500W RMS) 12" SA Series Dual 4-ohm Subwoofer

NE121S_SAV312D4 big
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NVX NE121S w/ Sundown Audio SAV312D4

Single 12" Sealed 3/4" MDF Black Carpeted Subwoofer Enclosure – 1.0 Cu. Ft. with Polyfil and NVX Logo w/ 3000W Peak (1500W RMS) 12" SA Series Dual 4-ohm Subwoofer

• 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%!
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1
List price $615.98
-19% $501.98

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• 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

JBL SUBBP12AM + Free NVX Sound Dampening Kit

450W Max Powered 12" Loaded Subwoofer Ported Enclosure System

SUBBP12AM, SDRF20 big
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JBL SUBBP12AM + Free NVX Sound Dampening Kit

450W Max Powered 12" Loaded Subwoofer Ported Enclosure System

• 12" GT Series Subwoofer
• GT Series Mono block Car Amplifier
• 450W Peak
• 150W RMS
• 12" Single Ported Subwoofer Enclosure
• Variable low-pass filter (40-200 Hz, 24 dB/Octave)
•

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22
List price $503.94
-14% $434.99

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Lowest price in 30 days

NVX QB10SPA Amplified Subwoofer and XKIT82 Amp Kit

1200W MAX (350W RMS) Single 10" Amplified Ported Subwoofer Enclosure with Remote Bass Knob and 8 Gauge OFC Complete 2-Channel Amplifier Wiring Kit

QB10SPA_XKIT82 big
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NVX QB10SPA Amplified Subwoofer and XKIT82 Amp Kit

1200W MAX (350W RMS) Single 10" Amplified Ported Subwoofer Enclosure with Remote Bass Knob and 8 Gauge OFC Complete 2-Channel Amplifier Wiring Kit

  • NVX QB10SPA 1200W Max Single 10-Inch Amplified Subwoofer Enclosure
  • Integrated 350W RMS Class D Amplifier for powerful bass performance
  • Precision-engineered slot ported MDF enclosure with protective metal grille
  • Wired remote bass knob for easy on-the-fly output adjustments
  • Full spec 8 gauge 100% oxygen-free copper amplifier wiring kit
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61
List price $371.97
-30% $259.98

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  • NVX QB10SPA 1200W Max Single 10-Inch Amplified Subwoofer Enclosure
  • Integrated 350W RMS Class D Amplifier for powerful bass performance
  • Precision-engineered slot ported MDF enclosure with protective metal grille
  • Wired remote bass knob for easy on-the-fly output adjustments
  • Full spec 8 gauge 100% oxygen-free copper amplifier wiring kit
NVX - Worth the Envy - Direct to Consumer Car Audio
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    Q: Can I upgrade or change the Universal-fit Loaded Subwoofer Boxes in 1981 Dodge B250?

    A: Yes this page includes all the best Universal-fit Loaded Subwoofer Boxes that work in your B250.

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    • 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.

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