Garage
Shop

1983 Alfa Romeo Spider

Universal gear includes car amplifiers, subs, and other products that do not install in a specific location or require fitment to integrate with a vehicle.

Universal-Fit Audio for 1983 Alfa Romeo Spider

When thinking of universal gear, we consider products like a car amp that gives more power to your speakers or subs, cell phone chargers, equalizers and sound processors, rear-seat entertainment and video monitors, as well as dash cameras.

Loading...
Filters
You Recently Chose:

We are sorry, no available results!

filter-icon Filters & Sort

Crux MVA-124

1-Input and 4-Output RCA Multi-Video Amplifier

MVA-124 big
Go to item page Right Arrow Icon of Right Arrow

1-Input and 4-Output RCA Multi-Video Amplifier

• Multi-Video Amplifier
• Includes one RCA input and four RCA outputs
• Video level control for each level

shipping truck icon Free shipping in USA. Provide zip for delivery date.

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

List price $48.30
-36% $31.05

In stock

Only 3 Left!

• Multi-Video Amplifier
• Includes one RCA input and four RCA outputs
• Video level control for each level

JL Audio SGR-10TW3

Mesh Grille for JL Audio 10" TW3 Subwoofers

Go to item page Right Arrow Icon of Right Arrow

Mesh Grille for JL Audio 10" TW3 Subwoofers

• 10" Subwoofer Grille
• Steel Mesh Material
• For Use with TW3 Series Subwoofers
• Powder Coated Satin Black Finish

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

• 10" Subwoofer Grille
• Steel Mesh Material
• For Use with TW3 Series Subwoofers
• Powder Coated Satin Black Finish

NVX - Worth the Envy - Direct to Consumer Car Audio

JBL JBLSUBBPACCKITAM

BassPro Go Vehicle Installation Kit

JBLSUBBPACCKITAM big
Go to item page Right Arrow Icon of Right Arrow

BassPro Go Vehicle Installation Kit

• BassPro Go Vehicle Installation Kit
• Designed for installing a JBL BassPro Go powered subwoofer in another vehicle
• Vehicle mounting bracket, hardware and harnesses included

shipping truck icon Free shipping in USA. Provide zip for delivery date.

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

List price $139.95
-21% $109.95

In stock

• BassPro Go Vehicle Installation Kit
• Designed for installing a JBL BassPro Go powered subwoofer in another vehicle
• Vehicle mounting bracket, hardware and harnesses included

JL Audio HD-RLC

Flush-Mount Wired Bass Remote Controller for JL Audio HD, MHD and XDM Amplifiers

HD-RLC big
Go to item page Right Arrow Icon of Right Arrow

Flush-Mount Wired Bass Remote Controller for JL Audio HD, MHD and XDM Amplifiers

• Wired Bass Remote Controller
• Compatible with select JL Audio HD, MHD and XDM amplifiers
• Flush-mountable installation
• Color: Black

shipping truck icon Free shipping in USA. Provide zip for delivery date.

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

18
$59.99

In stock

• Wired Bass Remote Controller
• Compatible with select JL Audio HD, MHD and XDM amplifiers
• Flush-mountable installation
• Color: Black

Stinger SSGA48

Stinger Select 4 to 8 Ga Set Screw Gauge Adapter

SSGA48 big
Go to item page Right Arrow Icon of Right Arrow

Stinger Select 4 to 8 Ga Set Screw Gauge Adapter

• Brass Construction
• 4 GA to 8 GA
• Nickel Plated Finish
• Large Set Screws

shipping truck icon Free shipping in USA. Provide zip for delivery date.

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

3
List price $9.00
-11% $7.99

Available

Ships in 10-14 days

• Brass Construction
• 4 GA to 8 GA
• Nickel Plated Finish
• Large Set Screws

Belva BAMMD3

Automotive 9-Function Digital Multimeter Tester

BAMMD3 big
Go to item page Right Arrow Icon of Right Arrow

Automotive 9-Function Digital Multimeter Tester

• Features easy-to-read 2-3/4" Digital display
• Updates 2.5 times per second
• Low battery indicator
• Over range indicator
• Includes two 36 in. 18 gauge CCA test leads

shipping truck icon Free shipping in USA. Provide zip for delivery date.

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

7
List price $29.99
-67% $9.99

In stock

• Features easy-to-read 2-3/4" Digital display
• Updates 2.5 times per second
• Low battery indicator
• Over range indicator
• Includes two 36 in. 18 gauge CCA test leads

JL Audio 10W0v3-4

300W RMS 10" W0v3 Series Single 4-ohm Car Subwoofer

10W0v3-4 big
Go to item page Right Arrow Icon of Right Arrow

300W RMS 10" W0v3 Series Single 4-ohm Car Subwoofer

• RMS Power: 300 watts
• Impedance: Single 4 ohm
• Mount depth: 4.90"
• Sensitivity: 84.07 dB

shipping truck icon Free shipping in USA. Provide zip for delivery date.
VIP Star Icon

VIP Product Get $14.00 in rewards to spend later

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

89
$139.99

In stock

Used from: $83.99
Limited time!

NVX SDBSK2 Premium Stealth Black

91 mil 1.38 sq ft Car Speaker Sound Deadening Kit (Two 10" x 10" Sheets)

SDBSK2 big
Go to item page Right Arrow Icon of Right Arrow

91 mil 1.38 sq ft Car Speaker Sound Deadening Kit (Two 10" x 10" Sheets)

• 1.38 square feet sound deadening kit
• Solid black design for any stealth car audio installation
• Material Used: Vibration Dampener
• Material Thickness: 0.091
• Install Location: Speaker
• Pack includes two 10" x 10" sheets

Purchase $400 or More of NVX and Save 15%!
shipping truck icon Free shipping in USA. Provide zip for delivery date.

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

48
List price $18.74
-20% $14.99

In stock

Used from: $10.49

• 1.38 square feet sound deadening kit
• Solid black design for any stealth car audio installation
• Material Used: Vibration Dampener
• Material Thickness: 0.091
• Install Location: Speaker
• Pack includes two 10" x 10" sheets

Omega DS-2.4

Economy Door Lock Actuator

DS-2.4 big
Go to item page Right Arrow Icon of Right Arrow

Economy Door Lock Actuator

• Single Door Lock Actuator
• Converts Manual Doorlocks Into Power Doorlocks
• Two-Wire Reverse Polarity Operation
• Universal Mounting Hardware Included

shipping truck icon Free shipping in USA. Provide zip for delivery date.

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

5
List price $19.99
-40% $11.99

In stock

• Single Door Lock Actuator
• Converts Manual Doorlocks Into Power Doorlocks
• Two-Wire Reverse Polarity Operation
• Universal Mounting Hardware Included

T-Spec VBTPN

(4) 0 Gauge or (4) 4/8/10 Gauge outputs with bolt-on post for factory harness retention

VBTPN big
Go to item page Right Arrow Icon of Right Arrow

(4) 0 Gauge or (4) 4/8/10 Gauge outputs with bolt-on post for factory harness retention

• For positive or negative battery post use
• Add a Post System
• >Solid brass construction

shipping truck icon Free shipping in USA. Provide zip for delivery date.

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

7
List price $47.99
-19% $38.99

In stock

• For positive or negative battery post use
• Add a Post System
• >Solid brass construction

Stinger SPXRGBUBKIT8

8-Piece Underbody RGB LED Light Kit

SPXRGBUBKIT8 big
Go to item page Right Arrow Icon of Right Arrow

8-Piece Underbody RGB LED Light Kit

• 8-way RGB LED Underbody Light Kit
• IP65 water-resistant rating
• Bright CREE light pods
• Controllable LED colors and patterns via Android or iOS app

shipping truck icon Free shipping in USA. Provide zip for delivery date.
VIP Star Icon

VIP Product Get $29.90 in rewards to spend later

Universal Icon
Universal – fits most vehicles.
Shop similar products or Update vehicle
List price $429.00
-30% $299.00

Available

Ships in 10-14 days

• 8-way RGB LED Underbody Light Kit
• IP65 water-resistant rating
• Bright CREE light pods
• Controllable LED colors and patterns via Android or iOS app

Limited time!

Kicker CWRT124 (48CWRT124)

1000W Peak (500W RMS) 12" CompRT Series Dual 4-ohm Shallow Car Subwoofer

CWRT124 big
Go to item page Right Arrow Icon of Right Arrow

1000W Peak (500W RMS) 12" CompRT Series Dual 4-ohm Shallow Car Subwoofer

• Peak Power: 1000 watts
• RMS Power: 500 watts
• Impedance: Dual 4 ohm
• UV-Treated Polypropylene Cone
• UV-resistant Santoprene Surround
• Mount depth: 3-3/4"
• Sensitivity: 85.5 dB

shipping truck icon Free shipping in USA. Provide zip for delivery date.

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

18
List price $279.99
Save $80.03
-29% $199.96

In stock

Only 3 Left!

Used from: $174.99

SMD DD-1+

Distortion Detector/Analyzer

DD-1+ big
Go to item page Right Arrow Icon of Right Arrow

Distortion Detector/Analyzer

• Check Gain Overlap Settings
• Input Voltage Capacity Raised to 200Vrms
• RMS AC Voltmeter Built-in

shipping truck icon Free shipping in USA. Provide zip for delivery date.

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

3
List price $314.98
$304.98

In stock

• Check Gain Overlap Settings
• Input Voltage Capacity Raised to 200Vrms
• RMS AC Voltmeter Built-in

Limited time!

NVX NE101S

Single 10" Sealed 3/4" MDF Black Carpeted Subwoofer Enclosure – 0.65 Cu. Ft. with Polyfil and NVX Logo

NE101S big
Go to item page Right Arrow Icon of Right Arrow

Single 10" Sealed 3/4" MDF Black Carpeted Subwoofer Enclosure – 0.65 Cu. Ft. with Polyfil and NVX Logo

• 10" Single Sealed Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Internal box volume: .65 cubic feet
• Premium Black Carpet with Black NVX Logo

Purchase $400 or More of NVX and Save 15%!
shipping truck icon Free shipping in USA. Provide zip for delivery date.

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

4
List price $83.99
-17% $69.99

In stock

• 10" Single Sealed Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Internal box volume: .65 cubic feet
• Premium Black Carpet with Black NVX Logo

Stinger SI4617

17 ft. (5.1 meters) of 6-Channel 4000 Series RCA Interconnect Cables

SI4617 big
Go to item page Right Arrow Icon of Right Arrow

17 ft. (5.1 meters) of 6-Channel 4000 Series RCA Interconnect Cables

• 6-Channel 4000 Series RCA Interconnect Cables
• 17 ft. (5.1 meter) Cables
• Stinger Audiophile Grade
• Twisted Pair Construction
• Perfect for 5-Channel Amplifiers
• Durable

shipping truck icon Free shipping in USA. Provide zip for delivery date.

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

14
List price $49.00
-14% $41.99

In stock

• 6-Channel 4000 Series RCA Interconnect Cables
• 17 ft. (5.1 meter) Cables
• Stinger Audiophile Grade
• Twisted Pair Construction
• Perfect for 5-Channel Amplifiers
• Durable

Dual 12" 3/4 MDF Sealed Subwoofer Enclosure (Belva MDFD12)

Dual 12-inch Sealed Car Sub Box Made with 3/4" MDF and lined w/Polyfil (2.46 cu ft Airspace - 12SQB)

MDFD12 big
Go to item page Right Arrow Icon of Right Arrow

Dual 12-inch Sealed Car Sub Box Made with 3/4" MDF and lined w/Polyfil (2.46 cu ft Airspace - 12SQB)

• 3/4" Medium Density Fiberboard Construction
• Durable Black Carpeting
• Pre-Lined with Poly-Fil
• Gold Speaker Terminals

shipping truck icon Free shipping in USA. Provide zip for delivery date.

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

121
List price $119.99
-17% $99.99

In stock

• 3/4" Medium Density Fiberboard Construction
• Durable Black Carpeting
• Pre-Lined with Poly-Fil
• Gold Speaker Terminals

Limited time!

NVX STBXC32 (Open Box, Great)

32 sq. ft. Black Subwoofer Box/Trunk Liner Carpet with Adhesive Backing

STBXC32 big
Go to item page Right Arrow Icon of Right Arrow

32 sq. ft. Black Subwoofer Box/Trunk Liner Carpet with Adhesive Backing

• Extremely durable fabric that will stand up to heavy usage
• Adhesive backing allows for an easier installation process
• Easy to cut, fit, and mold to desired shape or size
• Stain resistant
• Color: Black
• Carpet Thickness: 1/8 inch

10% Off Open Box!
shipping truck icon Free shipping in USA. Provide zip for delivery date.

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

List price $62.49
-44% $34.99
$31.49 with coupon | Price details

In stock

Only 1 Left!

• Extremely durable fabric that will stand up to heavy usage
• Adhesive backing allows for an easier installation process
• Easy to cut, fit, and mold to desired shape or size
• Stain resistant
• Color: Black
• Carpet Thickness: 1/8 inch

NVX QBUS10P

500W Peak (200W RMS) 10" Under-Seat Powered Car Subwoofer System

QBUS10P big
Go to item page Right Arrow Icon of Right Arrow

500W Peak (200W RMS) 10" Under-Seat Powered Car Subwoofer System

• Low Profile Ported Subwoofer System
• 200 Watts RMS
• Built-In Class D Amplifier
• Variable Bass Boost
• Speaker-Level Inputs
• Wired Remote Bass Level Control

2+ offers available
shipping truck icon Free shipping in USA. Provide zip for delivery date.
VIP Star Icon

VIP Product Get $20.00 in rewards to spend later

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

38
List price $219.99
-9% $199.99

In stock

Continue to cart

Available Offers (2) for NVX QBUS10P
Offer image
Prime Time! Save 20% at Checkout!
List price $219.99
-9% $199.99
$159.99 with coupon | Price details
2026-06-28 23:59:00
Purchase $400 or More of NVX and Save 15%!
2026-07-27 11:08:20
Used from: $109.99

• Low Profile Ported Subwoofer System
• 200 Watts RMS
• Built-In Class D Amplifier
• Variable Bass Boost
• Speaker-Level Inputs
• Wired Remote Bass Level Control

Scosche Tuneshare IUHPS

3.5 mm to 3.5 mm Headphone Audio Splitter

IUHPS big
Go to item page Right Arrow Icon of Right Arrow

3.5 mm to 3.5 mm Headphone Audio Splitter

• 3.5 mm to 3.5 mm Headphone Audio Splitter
• Allows for two people to listen to one audio source at once
• Length: 4.56" / 0.38 ft

shipping truck icon Free shipping in USA. Provide zip for delivery date.

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

2
List price $9.99
-20% $7.95

In stock

• 3.5 mm to 3.5 mm Headphone Audio Splitter
• Allows for two people to listen to one audio source at once
• Length: 4.56" / 0.38 ft

JL Audio 12W6v3-D4

600W RMS 12" W6v3 Series Dual 4-ohm Car Subwoofer

12W6v3-D4 big
Go to item page Right Arrow Icon of Right Arrow

600W RMS 12" W6v3 Series Dual 4-ohm Car Subwoofer

• RMS Power: 600 watts
• Impedance: Dual 4 ohm
• Mineral-Filled Polypropylene Cone
• Butyl Rubber Surround
• Mount depth: 7.52"
• Sensitivity: 85.4 dB

shipping truck icon Free shipping in USA. Provide zip for delivery date.
VIP Star Icon

VIP Product Get $95.00 in rewards to spend later

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

82
$949.99

In stock

Used from: $807.49
NVX - Worth the Envy - Direct to Consumer Car Audio

Items per page: 20 40 60

    Clear all
    why-shoping-with-sonic

    We love people and we're ready to help you! See what separates us from our competition.

    Take advantage of our VIP rewards like 10% back on your purchases, free 2-day shipping, extended warranties, and free returns! Gain access to all of these rewards without any membership fees.
    Get great discounted (and possibly FREE) installation accessories with most car stereo purchases. This includes dash kits, wiring harnesses and antenna adapters that you will need to properly install your new car stereo.
    We are an Authorized Dealer for all the brands we sell, including the most premium brands in car and marine audio such as Hertz, JL Audio, NVX, Rockford Fosgate, Kicker, Alpine, Kenwood and many more.
    Shop Deals and get up to 30% off premium brands! Shop Now! We are always looking out for the best products and deals to offer our customers. Don’t pay too much by shopping elsewhere!
    We have information on brands, gear, and more for you to explore! Check out our YouTube Channel for helpful how-to videos, product reviews, and Q&As. For a more detailed look, also visit our Learning Center!
    Our trained experts are here to assist you! They are just a phone call or click away to help you get the right gear for you and your vehicle!
    Why Shop With Us?
    FAQ for Universal-Fit Audio & Electronics in 1983 Spider

    Q: Can I upgrade or change the Universal-Fit Audio & Electronics in 1983 Alfa Romeo Spider?

    A: Yes this page includes all the best Universal-Fit Audio & Electronics that work in your Spider.

    Save up to 10 different vehicles in your garage
    Vehicle
    Store
    Delete

    2024 Toyota RAV4

    1989 Jaguar XJ6

    1983 Alfa Romeo Spider

    2018 Acura ILX

    2002 Saturn SC2

    1966 Chrysler Newport

    2011 Lexus GS460

    1983 Nissan 720

    2002 GMC Yukon

    1981 Ford B700

    Vehicle
    Store
    Delete

    2015 Can-Am Commander E XT

    2020 Can-Am Defender HD8

    Add vehicle Clear all vehicles
    Where to find vehicle info
    Are you sure you want to clear your garage?
    This action cannot be undone. Confirm
    This category was not designed for products.
    If you continue, you will be redirected to a category customized for your vehicle. Continue
    Loading...
    Identify your vehicle and submodel details
    • Owner's manual
    • Vehicle's insurance card
    • Vehicle registration
    • Vehicle produced after 2005: Inside driver's side door
    • Vehicle produced before 2005: Rear passenger doorjamb, glove box, center console, or engine compartment
    Car Info Side Door Icon
    Vehicle Registration Icon
    Vehicle Insurance Icon

    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.