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1975 Audi Fox

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Universal loaded and/or powered sub box enclosures that fit most vehicles, including your 1975 Fox.

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

Universal Sub Boxes (Loaded/Powered) for 1975 Audi Fox


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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

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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 NE121P w/ JBL Club Marine 12

Single 12" Slot-Ported Subwoofer Enclosure with JBL 12" Club Marine Series 4-Ohm RGB Subwoofer

NE121P_CLUB12 big
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NVX NE121P w/ JBL Club Marine 12

Single 12" Slot-Ported Subwoofer Enclosure with JBL 12" Club Marine Series 4-Ohm RGB Subwoofer

• 12" Single Ported Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Internal box volume: 1.75 cubic feet
• Premium Black Carpet with Black NVX Logo

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4
List price $499.94
-60% $199.99

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• 12" Single Ported Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Internal box volume: 1.75 cubic feet
• Premium Black Carpet with Black NVX Logo

NVX - Worth the Envy - Direct to Consumer Car Audio

NVX Dual 10" Complete Bass System w/ Ported Box, Amp, and Wiring Kit

Dual 10" Slot Ported 3/4" MDF Black Carpeted Subwoofer Enclosure with 12" VS-Series v3 Car Subwoofer, N-Series Monoblock Amplifier and 4 Gauge Amplifier Wiring Kit

NE102P_BASSPACKAGEKIT big
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NVX Dual 10" Complete Bass System w/ Ported Box, Amp, and Wiring Kit

Dual 10" Slot Ported 3/4" MDF Black Carpeted Subwoofer Enclosure with 12" VS-Series v3 Car Subwoofer, N-Series Monoblock Amplifier and 4 Gauge Amplifier Wiring Kit

• 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

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171
List price $875.95
-31% $606.30

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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

Kicker DL7S122 (44DL7S122), NVX NDA12001 Amp and XKIT42 Amp Kit

3000W Peak Loaded Dual 12" Vented Enclosure with 2400W Peak N-Series Class-D Monoblock Amplifier and 4 Gauge OFC Amplifier Wiring Kit

44DL7S122_NDA12001_XKIT42 big
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Kicker DL7S122 (44DL7S122), NVX NDA12001 Amp and XKIT42 Amp Kit

3000W Peak Loaded Dual 12" Vented Enclosure with 2400W Peak N-Series Class-D Monoblock Amplifier and 4 Gauge OFC Amplifier Wiring Kit

  • Kicker 44DL7S122 3000W Peak Dual 12 inch Vented Subwoofer Enclosure
  • NVX NDA12001 1200W RMS N-Series Class-D Monoblock Amplifier
  • Remote Bass Knob included for easy output adjustments
  • XKIT42 Full Spec 4 Gauge 100% OFC Complete Wiring Kit
  • 2-Channel Amplifier installation setup with RCA interconnects
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148
List price $1340.96
-18% $1,102.86

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  • Kicker 44DL7S122 3000W Peak Dual 12 inch Vented Subwoofer Enclosure
  • NVX NDA12001 1200W RMS N-Series Class-D Monoblock Amplifier
  • Remote Bass Knob included for easy output adjustments
  • XKIT42 Full Spec 4 Gauge 100% OFC Complete Wiring Kit
  • 2-Channel Amplifier installation setup with RCA interconnects

MTX Magnum MB210SP 10" 1200W Subwoofer System w/ Amp Kit + Digital Capacitor

1200W Dual 10" Loaded & Ported Subwoofer Enclosure with Monoblock Subwoofer Amplifier Included Package

BB2D,BAK82,MB210SP big
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MTX Magnum MB210SP 10" 1200W Subwoofer System w/ Amp Kit + Digital Capacitor

1200W Dual 10" Loaded & Ported Subwoofer Enclosure with Monoblock Subwoofer Amplifier Included Package

• 800W Peak
• Polymer coated pulp cone
• Foam surround
• 4 Ohm
• Magna Bass Mono Amplifier
• 5/8" MDF construction

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198
List price $439.93
-24% $333.99

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• 800W Peak
• Polymer coated pulp cone
• Foam surround
• 4 Ohm
• Magna Bass Mono Amplifier
• 5/8" MDF construction

Limited time!

NVX ESW124 with Sealed Enclosure (MDFD12)

500W Peak (250W RMS) E-Series 12" Dual 4-Ohm Car Subwoofer + Sealed Sub Box and lined w/Polyfil

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NVX ESW124 with Sealed Enclosure (MDFD12)

500W Peak (250W RMS) E-Series 12" Dual 4-Ohm Car Subwoofer + Sealed Sub Box and lined w/Polyfil

• Peak Power: 500 watts
• RMS Power: 250 watts
• Impedance: Single 4 ohm
• Enhanced Pressed Paper Cone
• High Roll Foam Surround
• Sensitivity: 87 dB
• Includes Sealed Subwoofer Enclosure

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120
List price $287.97
-17% $239.97

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Cerwin Vega HS102D with Sealed Truck Enclosure

800W Max (200W RMS)10" Dual 2-Ohm Shallow Mount Subwoofer

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Cerwin Vega HS102D with Sealed Truck Enclosure

800W Max (200W RMS)10" Dual 2-Ohm Shallow Mount Subwoofer

• 800 Watts Max
• 200 Watts RMS
• High Strength Composite Polypropylene Cone
• Unimount Gasket Surround
• Deep Drawn Stamped Steel Basket
• High Tension Nickel Plated Terminals
• Cross Flow Window Venting
• Includes Sealed Truck Enclosure

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8
List price $219.98
-39% $133.98

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• 800 Watts Max
• 200 Watts RMS
• High Strength Composite Polypropylene Cone
• Unimount Gasket Surround
• Deep Drawn Stamped Steel Basket
• High Tension Nickel Plated Terminals
• Cross Flow Window Venting
• Includes Sealed Truck Enclosure

Limited time!

NVX NE82S w/ Alpine R2-W8D4

Dual 8" Sealed 3/4" MDF Black Carpeted Subwoofer Enclosure – 0.80 Cu. Ft. with Polyfil and NVX Logo w/8" R2-Series Dual 4-ohm Car Subwoofer

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NVX NE82S w/ Alpine R2-W8D4

Dual 8" Sealed 3/4" MDF Black Carpeted Subwoofer Enclosure – 0.80 Cu. Ft. with Polyfil and NVX Logo w/8" R2-Series Dual 4-ohm Car Subwoofer

• 8" Dual Sealed Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Internal box volume: .80 cubic feet
• Premium Black Carpet with Black NVX Logo

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List price $815.99
-33% $543.89

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Only 1 Left!

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• 8" Dual Sealed Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Internal box volume: .80 cubic feet
• Premium Black Carpet with Black NVX Logo

Kicker 49DL7TDF122, NVX VAD17001v2 Amplifier and XKIT42 Wiring Kit

1200W RMS Loaded Dual 12" Downward Firing Enclosure with 1700W RMS Class D Monoblock Amplifier and 4 Gauge OFC Wiring Kit

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Kicker 49DL7TDF122, NVX VAD17001v2 Amplifier and XKIT42 Wiring Kit

1200W RMS Loaded Dual 12" Downward Firing Enclosure with 1700W RMS Class D Monoblock Amplifier and 4 Gauge OFC Wiring Kit

  • Kicker 49DL7TDF122 Loaded Dual 12" Downward Firing Sealed Subwoofer Enclosure
  • 1200W RMS power handling for deep and impactful bass performance
  • NVX VAD17001v2 1700W RMS Class D Monoblock Marine Certified Amplifier
  • Full Spec 4 Gauge 100% OFC Oxygen Free Copper Amplifier Wiring Kit
  • Complete bundle includes Bass Remote and 2-Channel Wiring Kit with RCA
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158
List price $1336.96
-19% $1,089.06

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  • Kicker 49DL7TDF122 Loaded Dual 12" Downward Firing Sealed Subwoofer Enclosure
  • 1200W RMS power handling for deep and impactful bass performance
  • NVX VAD17001v2 1700W RMS Class D Monoblock Marine Certified Amplifier
  • Full Spec 4 Gauge 100% OFC Oxygen Free Copper Amplifier Wiring Kit
  • Complete bundle includes Bass Remote and 2-Channel Wiring Kit with RCA

JBL STAGE1200D + NVX VAD10001 Amplifier + NVX 4 Gauge Amp Kit

Stage Series Dual 12" Car Audio Ported Enclosure + NVX Amp and Amp Kit

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JBL STAGE1200D + NVX VAD10001 Amplifier + NVX 4 Gauge Amp Kit

Stage Series Dual 12" Car Audio Ported Enclosure + NVX Amp and Amp Kit

• 600W Dual 12" Vented Subwoofer Enclosure
• 12" Stage Series Subwoofers
•Vented enclosure with 5/8" MDF covered with black carpet
• Enclosure Dimensions: 10.63" TD x 13.75" BD x 30.13" W x 15.13" H

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165
List price $811.93
-20% $648.66

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• 600W Dual 12" Vented Subwoofer Enclosure
• 12" Stage Series Subwoofers
•Vented enclosure with 5/8" MDF covered with black carpet
• Enclosure Dimensions: 10.63" TD x 13.75" BD x 30.13" W x 15.13" H

Limited time!

NVX NE151P w/ Kicker 52CVR154

Single 15" Slot Ported 3/4" MDF Black Carpeted Subwoofer Enclosure – 3.50 Cu. Ft. with Polyfil and NVX Logo w/1400W Peak (700W RMS) 15" CompVR Series Dual 4-ohm Subwoofer

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NVX NE151P w/ Kicker 52CVR154

Single 15" Slot Ported 3/4" MDF Black Carpeted Subwoofer Enclosure – 3.50 Cu. Ft. with Polyfil and NVX Logo w/1400W Peak (700W RMS) 15" CompVR Series Dual 4-ohm Subwoofer

• 15" Single Ported Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Internal box volume: 3.50 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 $479.98
-19% $389.98

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• 15" Single Ported Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Internal box volume: 3.50 cubic feet
• Premium Black Carpet with Black NVX Logo

Limited time!

NVX NE82P w/ Rockford Fosgate Punch P3 P3SD4-8

Dual 8" Slot Ported 3/4" MDF Black Carpeted Subwoofer Enclosure – 1.5 Cu. Ft. with Polyfil and NVX Logo w/8" Punch Series Dual 4-ohm Shallow Car Subwoofer

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NVX NE82P w/ Rockford Fosgate Punch P3 P3SD4-8

Dual 8" Slot Ported 3/4" MDF Black Carpeted Subwoofer Enclosure – 1.5 Cu. Ft. with Polyfil and NVX Logo w/8" Punch Series Dual 4-ohm Shallow 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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6
List price $531.97
-11% $471.97

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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

NVX VADM2 v2, 2x Alpine W12S4, Belva Dual 12 Enclosure + NVX Amp Kit

600W RMS V-Series 2-Channel Amplifier, 750W Peak 12" Bass Series Single 4-ohm Car Subwoofer, Dual 12-inch Sealed MDF Enclosure and 8 Gauge Wiring Kit

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NVX VADM2 v2, 2x Alpine W12S4, Belva Dual 12 Enclosure + NVX Amp Kit

600W RMS V-Series 2-Channel Amplifier, 750W Peak 12" Bass Series Single 4-ohm Car Subwoofer, Dual 12-inch Sealed MDF Enclosure and 8 Gauge Wiring Kit

  • NVX VADM2 v2 600W RMS V-Series Micro Class D 2-Channel Amplifier
  • Alpine W12S4 750W Peak 12" Bass Series Single 4-ohm Subwoofer
  • Dual 12" Sealed Enclosure with 3/4" MDF and Polyfil Lining
  • 8 Gauge 100% OFC Complete 2-Channel Amplifier Wiring Kit
  • Comprehensive car audio bundle with high-output amp and sub setup
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200
List price $735.97
-16% $619.87

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  • NVX VADM2 v2 600W RMS V-Series Micro Class D 2-Channel Amplifier
  • Alpine W12S4 750W Peak 12" Bass Series Single 4-ohm Subwoofer
  • Dual 12" Sealed Enclosure with 3/4" MDF and Polyfil Lining
  • 8 Gauge 100% OFC Complete 2-Channel Amplifier Wiring Kit
  • Comprehensive car audio bundle with high-output amp and sub setup

Cerwin-Vega BKX212S with Amplifier Wiring Kit

2000W Peak Loaded Dual 12" Sealed Subwoofer Enclosure with 1000W Basskit Amplifier and Amplifier Wiring Kit

BKX212S, BAK42 big
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Cerwin-Vega BKX212S with Amplifier Wiring Kit

2000W Peak Loaded Dual 12" Sealed Subwoofer Enclosure with 1000W Basskit Amplifier and Amplifier Wiring Kit

• 12" Amplified Loaded Subwoofer System
• 1000 watts RMS
• Built-In Class D Amplifier
• Variable bass boost
• Wired remote bass level control

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181
List price $491.98
-27% $359.99

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• 12" Amplified Loaded Subwoofer System
• 1000 watts RMS
• Built-In Class D Amplifier
• Variable bass boost
• Wired remote bass level control

Alpine S2-SB10V Package

Two 600W 10” Loaded Subwoofer Enclosures with Linking Kit + 1200W Class-D Monoblock Amplifier with Bass Knob

S2-SB10V_PKG big
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Alpine S2-SB10V Package

Two 600W 10” Loaded Subwoofer Enclosures with Linking Kit + 1200W Class-D Monoblock Amplifier with Bass Knob

• Includes preloaded Alpine S-W10D4 10” subwoofer
• Ported enclosure with 2 10" S Series Subwoofer
• 600 watts RMS (1800 watts Peak)
• Final Impedance: 2-ohm
• USA Designed for sound quality performance

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13
List price $2000.00
-21% $1,571.99

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• Includes preloaded Alpine S-W10D4 10” subwoofer
• Ported enclosure with 2 10" S Series Subwoofer
• 600 watts RMS (1800 watts Peak)
• Final Impedance: 2-ohm
• USA Designed for sound quality performance

Kicker DL7S122 (44DL7S122) and NVX VAD17001v2 Amp + XKIT42 Amp Kit

3000W Peak Loaded Dual 12" Vented Enclosure with 3400W Peak Monoblock Amplifier and 4 Gauge OFC 2-Channel Amplifier Wiring Kit

44DL7S122_VAD17001_XKIT42 big
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Kicker DL7S122 (44DL7S122) and NVX VAD17001v2 Amp + XKIT42 Amp Kit

3000W Peak Loaded Dual 12" Vented Enclosure with 3400W Peak Monoblock Amplifier and 4 Gauge OFC 2-Channel Amplifier Wiring Kit

  • Kicker DL7S122 3000W Peak Loaded Dual 12 Inch Vented Subwoofer Enclosure
  • NVX VAD17001 v2 3400W Peak Class D Monoblock Marine Certified Amplifier
  • XKIT42 Full Spec 4 Gauge 100% OFC Oxygen Free Copper Wiring Kit
  • Complete Bass Package includes 1500W RMS Subwoofers and 1700W RMS Amp
  • High-performance setup with Bass Remote and 2-Channel RCA cables
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171
List price $1436.96
-17% $1,192.86

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  • Kicker DL7S122 3000W Peak Loaded Dual 12 Inch Vented Subwoofer Enclosure
  • NVX VAD17001 v2 3400W Peak Class D Monoblock Marine Certified Amplifier
  • XKIT42 Full Spec 4 Gauge 100% OFC Oxygen Free Copper Wiring Kit
  • Complete Bass Package includes 1500W RMS Subwoofers and 1700W RMS Amp
  • High-performance setup with Bass Remote and 2-Channel RCA cables
Limited time!

Atrend 12TKDV with (2) NVX SMW12D4 Subwoofers

Dual 12" Vented Truck Enclosure with (2) 400W RMS Shallow-Mount 12" Dual 4-Ohm Subwoofer

SMW12D4_12TKDV big
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Atrend 12TKDV with (2) NVX SMW12D4 Subwoofers

Dual 12" Vented Truck Enclosure with (2) 400W RMS Shallow-Mount 12" Dual 4-Ohm Subwoofer

• 800 watts Watts Peak
• 400 watts Watts RMS
• Carbon Fiber Reinforced Polypropylene Cone
• Butyl Rubber Surround
• Includes Depth Extension Clearance Plate
• Mounting Depth: 3-15/16"

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10
List price $473.97
-32% $319.93

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Only 1 Left!

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Limited time!

NVX NE121P w/ Kicker 51CWQ122 (Sold Individually)

Single 12" Slot Ported 3/4" MDF Black Carpeted Subwoofer Enclosure – 1.75 Cu. Ft. with Polyfil and NVX Logo w/ 2000W Peak (1000W RMS) 12" CompQ Series Dual 2-ohm Subwoofer

NE121P_51CWQ122 big
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NVX NE121P w/ Kicker 51CWQ122 (Sold Individually)

Single 12" Slot Ported 3/4" MDF Black Carpeted Subwoofer Enclosure – 1.75 Cu. Ft. with Polyfil and NVX Logo w/ 2000W Peak (1000W RMS) 12" CompQ Series Dual 2-ohm 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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7
List price $499.98
$486.94

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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 NE121P w/ Sundown Audio SAV312D2

Single 12" Slot Ported 3/4" MDF Black Carpeted Subwoofer Enclosure – 1.75 Cu. Ft. with Polyfil and NVX Logo w/3000W Peak (1500W RMS) 12" SA Series Dual 2-ohm Subwoofer

NE121P_SAV312D2 big
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NVX NE121P w/ Sundown Audio SAV312D2

Single 12" Slot Ported 3/4" MDF Black Carpeted Subwoofer Enclosure – 1.75 Cu. Ft. with Polyfil and NVX Logo w/3000W Peak (1500W RMS) 12" SA Series Dual 2-ohm Subwoofer

• 12" Single Ported Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Internal box volume: 1.75 cubic feet
• Premium Black Carpet with Black NVX Logo

Purchase $400 or More of NVX and Save 15%!
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4
List price $635.98
-15% $539.55

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• 12" Single Ported Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Internal box volume: 1.75 cubic feet
• Premium Black Carpet with Black NVX Logo

EXCLUSIVE

Belva BPKG112v2 600W 12" Subwoofer + Ported Box + Amp Kit + 1 Farad Capacitor

600 Watt Complete Car Audio Bass Package

BB1D,BPKG112v2 big
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Belva BPKG112v2 600W 12" Subwoofer + Ported Box + Amp Kit + 1 Farad Capacitor

600 Watt Complete Car Audio Bass Package

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

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102
List price $319.98
-32% $218.98

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

NVX - Worth the Envy - Direct to Consumer Car Audio
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    FAQ for Universal-fit Loaded Subwoofer Boxes in 1975 Fox

    Q: Can I upgrade or change the Universal-fit Loaded Subwoofer Boxes in 1975 Audi Fox?

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

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    • Vehicle produced after 2005: Inside driver's side door
    • Vehicle produced before 2005: Rear passenger doorjamb, glove box, center console, or engine compartment
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    Modern vehicles often require specific brackets, wiring harnesses, and mounting solutions. A fit guide ensures:

    • You see only parts engineered for your exact vehicle
    • You avoid incompatible radios, speakers, or wiring
    • 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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