Garage
Shop
Loading...
Filters
filter-icon Filters & Sort
Limited time!

Kicker CSC5 (46CSC54) (Open Box, Great)

450W Peak (150W RMS) 5.25” CS Series 2 Way Coaxial 4-ohm Speakers

46CSC54 big
Go to item page Right Arrow Icon of Right Arrow

450W Peak (150W RMS) 5.25” CS Series 2 Way Coaxial 4-ohm Speakers

• 225 watts Peak Each, 75 watts RMS Each
• 1/2" PEI (Polyetherimide) Balanced Dome tweeters with neodymium magnets
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 90 dB

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

Install kits available for most vehicles

found car based on your search
Fits your Regal
10
List price $119.99
-42% $69.99 /pair
$62.99 with coupon | Price details

In stock

• 225 watts Peak Each, 75 watts RMS Each
• 1/2" PEI (Polyetherimide) Balanced Dome tweeters with neodymium magnets
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 90 dB

Limited time!

DS18 PRO-X6.4BM (Sold Individually) (Open Box, Great)

500W Peak (250W RMS) 6.5” PRO-X Series 4-ohm Mid-Range Loudspeaker

PRO-X6.4BM big
Go to item page Right Arrow Icon of Right Arrow

500W Peak (250W RMS) 6.5” PRO-X Series 4-ohm Mid-Range Loudspeaker

• 500 watts Peak Each, 250 watts RMS Each
• Red Aluminum Bullet tweeters
• Non-Pressed Paper cone material
• Impedance: 4 ohm
• Sensitivity: 94 dB

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

Install kits available for most vehicles

found car based on your search
Fits your Regal
List price $52.95
-30% $37.07
$33.36 with coupon | Price details

In stock

Only 1 Left!

• 500 watts Peak Each, 250 watts RMS Each
• Red Aluminum Bullet tweeters
• Non-Pressed Paper cone material
• Impedance: 4 ohm
• Sensitivity: 94 dB

NVX - Worth the Envy - Direct to Consumer Car Audio
Limited time!

Infinity Kappa 503CF (INFSPKKA503CFAM) (Open Box, Great)

480W Peak (160W RMS) 5.25” Kappa Series 2 Way 3-ohm Component Speaker System

Kappa 503CF big
Go to item page Right Arrow Icon of Right Arrow

480W Peak (160W RMS) 5.25” Kappa Series 2 Way 3-ohm Component Speaker System

• 240 watts Peak Each, 80 watts RMS Each
• 3/4" Silk Edge Driven Dome uni-pivot and angled tweeters
• Glass Fiber cone material
• Impedance: 3 ohm
• Sensitivity: 93 dB

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

Install kits available for most vehicles

found car based on your search
Fits your Regal
List price $449.95
-38% $279.30 /set
$251.37 with coupon | Price details

In stock

Only 1 Left!

Limited time!

Massive Audio M6XL (Sold Individually) (Open Box, Great)

400W Peak (200W RMS) 6.5" Pro-Audio Midrange 8-ohm Speaker

M6XL big
Go to item page Right Arrow Icon of Right Arrow

400W Peak (200W RMS) 6.5" Pro-Audio Midrange 8-ohm Speaker

• 400 watts Peak Each, 200 watts RMS Each
• Hardened Paper cone material
• Impedance: 8 ohm
• Sensitivity: 97 dB

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

Install kits available for most vehicles

found car based on your search
Fits your Regal
List price $74.99
-44% $41.99
$37.79 with coupon | Price details

In stock

Only 1 Left!

Limited time!

Kicker CSC4 (46CSC44) (Open Box, Great)

300W Peak (100W RMS) 4” CS Series 2 Way Coaxial 4-ohm Speakers

46CSC44 big
Go to item page Right Arrow Icon of Right Arrow

300W Peak (100W RMS) 4” CS Series 2 Way Coaxial 4-ohm Speakers

• 150 watts Peak Each, 50 watts RMS Each
• 1/2" PEI (Polyetherimide) Balanced Dome Tweeters
• Polypropylene cone material
• Steel mesh speaker grilles included
• Impedance: 4 ohm
• Sensitivity: 88 dB

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

Install kits available for most vehicles

found car based on your search
Fits the following location in your Regal
  • Front Door
37
List price $84.99
-38% $52.49 /pair
$47.24 with coupon | Price details

In stock

• 150 watts Peak Each, 50 watts RMS Each
• 1/2" PEI (Polyetherimide) Balanced Dome Tweeters
• Polypropylene cone material
• Steel mesh speaker grilles included
• Impedance: 4 ohm
• Sensitivity: 88 dB

Limited time!

DS18 EXL-SQ5.25 (Open Box, Great)

680W Peak (160W RMS) 5.25" EXL-SQ Series 2-way 3-ohm Coaxial Car Speakers

EXL-SQ5.25 big
Go to item page Right Arrow Icon of Right Arrow

680W Peak (160W RMS) 5.25" EXL-SQ Series 2-way 3-ohm Coaxial Car Speakers

• 340 watts Peak Each, 80 watts RMS Each
• 1" PEI (Polyetherimide) Dome tweeters with neodynium magnets
• Glass Fiber cone material
• Impedance: 3 ohm
• Sensitivity: 86 dB

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

Install kits available for most vehicles

found car based on your search
Fits your Regal
List price $143.95
-30% $100.76 /pair
$90.68 with coupon | Price details

In stock

Only 1 Left!

Limited time!

Kicker CSC5 (46CSC54) (Like New (Open Box))

450W Peak (150W RMS) 5.25” CS Series 2 Way Coaxial 4-ohm Speakers

46CSC54 big
Go to item page Right Arrow Icon of Right Arrow

450W Peak (150W RMS) 5.25” CS Series 2 Way Coaxial 4-ohm Speakers

• 225 watts Peak Each, 75 watts RMS Each
• 1/2" PEI (Polyetherimide) Balanced Dome tweeters with neodymium magnets
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 90 dB

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

Install kits available for most vehicles

found car based on your search
Fits your Regal
10
List price $119.99
-29% $84.99 /pair
$76.49 with coupon | Price details

In stock

Only 2 Left!

• 225 watts Peak Each, 75 watts RMS Each
• 1/2" PEI (Polyetherimide) Balanced Dome tweeters with neodymium magnets
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 90 dB

Limited time!

Infinity Reference 5030cx (REF5030CX) (Open Box, Great)

390W Max (130W RMS) 5.25" Reference Series 2 Way 3-ohm Component Speaker System

Reference 5030cx big
Go to item page Right Arrow Icon of Right Arrow

390W Max (130W RMS) 5.25" Reference Series 2 Way 3-ohm Component Speaker System

• 195 watts Peak Each, 65 watts RMS Each
• 3/4" Textile Edge Driven Dome tweeters
• Polypropylene cone material
• Impedance: 3 ohm
• Sensitivity: 93 dB

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

Install kits available for most vehicles

found car based on your search
Fits your Regal
List price $249.95
-44% $139.99 /set
$125.99 with coupon | Price details

In stock

Only 1 Left!

Limited time!

JBL Stage3 427F (STAGE3427FAM) (Open Box, Great)

300W Peak (60W RMS) 4" Stage3 Series 2-way Coaxial 3-ohm Speakers

Stage3 427F big
Go to item page Right Arrow Icon of Right Arrow

300W Peak (60W RMS) 4" Stage3 Series 2-way Coaxial 3-ohm Speakers

• 150 watts Peak Each, 30 watts RMS Each
• Edge-driven Dome tweeters
• Polypropylene cone material
• Impedance: 3 ohm
• Sensitivity: 90 dB

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

Install kits available for most vehicles

found car based on your search
Fits the following location in your Regal
  • Front Door
List price $89.95
-46% $48.97 /pair
$44.07 with coupon | Price details

In stock

Only 1 Left!

Limited time!

Pioneer TS-G1320S (Open Box, Great)

500W Peak (70W RMS) 5.25" G-Series 2-way 4-ohm Coaxial Car Speakers

TS-G1320S big
Go to item page Right Arrow Icon of Right Arrow

500W Peak (70W RMS) 5.25" G-Series 2-way 4-ohm Coaxial Car Speakers

• 250 watts Peak Each, 35 watts RMS Each
• 1-3/16" Polyethylene Terephthalate (PET) Balanced Dome tweeters
• Mica Injected Polypropylene - MIPP cone material with Progressive Flex Suspension System (PFSS) spider
• Impedance: 4 ohm
• Sensitivity: 87 dB

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

Install kits available for most vehicles

found car based on your search
Fits your Regal
27
List price $65.00
-38% $39.99 /pair
$35.99 with coupon | Price details

In stock

Only 3 Left!

Limited time!

NVX NSP525 - Open Box, Great

240W Peak (160W RMS) 5.25" N-Series 2-Way Coaxial Car Speakers with 20mm Silk Dome Tweeters

NSP525 big
Go to item page Right Arrow Icon of Right Arrow

240W Peak (160W RMS) 5.25" N-Series 2-Way Coaxial Car Speakers with 20mm Silk Dome Tweeters

• 240 watts Peak Each, 80 watts RMS Each
• 3/4" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB
• Mounting Depth: 1.96"

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

Install kits available for most vehicles

found car based on your search
Fits your Regal
List price $71.99
-31% $49.99 /pair
$44.99 with coupon | Price details

In stock

Limited time!

Massive Audio M6 (Sold Individually) (Open Box, Great)

300W Peak (140W RMS) 6.5" M Series 8-ohm Midrange Car Speaker

M6-3 big
Go to item page Right Arrow Icon of Right Arrow

300W Peak (140W RMS) 6.5" M Series 8-ohm Midrange Car Speaker

• 300 watts Peak Each, 140 watts RMS Each
• Laminate-Treated Paper cone material
• Impedance: 8 ohm
• Sensitivity: 96 dB

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

Install kits available for most vehicles

found car based on your search
Fits your Regal
List price $49.99
-44% $27.99
$25.19 with coupon | Price details

In stock

Only 1 Left!

JL Audio C1-650se (Open Box, Great)

450W Peak (100W RMS) 6.5" C1 Series 2-Way 4-ohm Component Speaker System

C1-650se big
Go to item page Right Arrow Icon of Right Arrow

450W Peak (100W RMS) 6.5" C1 Series 2-Way 4-ohm Component Speaker System


• 50 watts RMS Each
• 1" Silk Dome Tweeters
• Mineral-Filled Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 91 dB

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

Install kits available for most vehicles

found car based on your search
Fits your Regal
2
List price $249.99
-15% $212.49 /set

In stock

Infinity Kappa 603CF (INFSPKKA603CFAM) - Open Box, Great

Kappa Series 6.5" Component Speaker System

Kappa 603CF big
Go to item page Right Arrow Icon of Right Arrow

Kappa Series 6.5" Component Speaker System

• Peak Power: 330W
• RMS Power: 110W
• edge-driven, silk dome tweeter
• Mounting Depth: 2-1/8"
• Plus One+ glass-fiber woofer cone

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

Install kits available for most vehicles

found car based on your search
Fits your Regal
6
List price $499.95
-39% $305.96

In stock

Pioneer TS-G1620F (2-Pairs)

600W Max (80W RMS) 6.5" G-Series 2-Way Coaxial Car Speakers

TS-G1620F 2 Pack big
Go to item page Right Arrow Icon of Right Arrow

600W Max (80W RMS) 6.5" G-Series 2-Way Coaxial Car Speakers

• 300 watts Max Each, 40 watts RMS Each
• Includes Two Pairs, Four Speakers Total
• 1-3/16" Balanced Dome Tweeter
• Injection Molded Polypropylene Cone
• 4 ohm Impedance
• Sensitivity: 89dB
• Mounting Depth: 1-3/4"

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

Install kits available for most vehicles

found car based on your search
Fits your Regal
13
List price $130.00
-26% $96.00

In stock

Hertz MPK165.3 + FREE $200 Gift Card

6.5" Mille PRO Series 2-Way 4 Ohm Component speaker system

MPK 165.3, 200egift big
Go to item page Right Arrow Icon of Right Arrow

6.5" Mille PRO Series 2-Way 4 Ohm Component speaker system

• 110 Watts Max Each, 55 Watts RMS Each
• Pressed-pulp cone with cotton fibers cone material
• Tetolon Tweeter Dome
• 4 Ohm Impedance
• Sensitivity: 92 dB

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

Install kits available for most vehicles

found car based on your search
Fits your Regal
3
List price $905.00
-34% $599.99 /set

In stock

Only 1 Left!

• 110 Watts Max Each, 55 Watts RMS Each
• Pressed-pulp cone with cotton fibers cone material
• Tetolon Tweeter Dome
• 4 Ohm Impedance
• Sensitivity: 92 dB

Hertz CX 100 + FREE $75 Gift Card

4" Cento Series 2-Way Coaxial Car Speakers

CX 100, 75EGIFT big
Go to item page Right Arrow Icon of Right Arrow

4" Cento Series 2-Way Coaxial Car Speakers

• 60 Watts Max Each, 20 Watts RMS Each
• Semi-pressed paper + Mica cone material
• Tetolon Tweeter dome
• 4 Ohm Impedance
• Sensitivity: 92 dB
• Mounting Depth: 1-3/4"

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

Install kits available for most vehicles

found car based on your search
Fits the following location in your Regal
  • Front Door
7
List price $335.00
-25% $249.99 /pair

In stock

• 60 Watts Max Each, 20 Watts RMS Each
• Semi-pressed paper + Mica cone material
• Tetolon Tweeter dome
• 4 Ohm Impedance
• Sensitivity: 92 dB
• Mounting Depth: 1-3/4"

Hertz CX 165 + FREE $100 Gift Card

6.5" Cento Series 2-Way Coaxial Car Speakers

CX 165, 100EGIFT big
Go to item page Right Arrow Icon of Right Arrow

6.5" Cento Series 2-Way Coaxial Car Speakers

• 105 Watts Max Each, 35 Watts RMS Each
• Semi-pressed paper + Mica cone material
• Tetolon Tweeter dome
• 4 Ohm Impedance
• Sensitivity: 93 dB
• Mounting Depth: 2-1/2"

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

Install kits available for most vehicles

found car based on your search
Fits your Regal
7
List price $360.00
-31% $249.99 /pair

In stock

• 105 Watts Max Each, 35 Watts RMS Each
• Semi-pressed paper + Mica cone material
• Tetolon Tweeter dome
• 4 Ohm Impedance
• Sensitivity: 93 dB
• Mounting Depth: 2-1/2"

JBL GX608C (2-Pairs, 4-Total)

840W Peak (280W RMS) GX Series 6.5” Component Speaker System (2-Pairs)

GX608C_2 big
Go to item page Right Arrow Icon of Right Arrow

840W Peak (280W RMS) GX Series 6.5” Component Speaker System (2-Pairs)

• 210 watts Peak Each, 70 watts RMS Each
• Dome Tweeters
• Polypropylene cone material
• Impedance: 2.3 ohm
• Sensitivity: 92 dB

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

Install kits available for most vehicles

found car based on your search
Fits your Regal
7
$239.90

In stock

Only 2 Left!

• 210 watts Peak Each, 70 watts RMS Each
• Dome Tweeters
• Polypropylene cone material
• Impedance: 2.3 ohm
• Sensitivity: 92 dB

Lowest price in 30 days

JL Audio C2-600 (Open Box, Great)

200W Peak (120W RMS) 6” Evolution C2 Series 2-way 4-ohm Component Speaker System

C2-600 big
Go to item page Right Arrow Icon of Right Arrow

200W Peak (120W RMS) 6” Evolution C2 Series 2-way 4-ohm Component Speaker System

• 100 watts Peak Each, 60 watts RMS Each
• 3/4" Silk Dome Tweeters
• Mica Injected Polypropylene - MIPP cone material
• Impedance: 4 ohm
• Sensitivity: 93.5 dB

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

Install kits available for most vehicles

found car based on your search
Fits your Regal
5
List price $329.99
-34% $216.74 /set

In stock

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 Speakers in 1981 Regal

    Q: Can I upgrade or change the Speakers in 1981 Buick Regal?

    A: Yes this page includes all the best Speakers that work in your Regal.

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

    2023 Ram 2500

    2005 Cadillac STS

    1960 Chevrolet Nomad

    1998 Chrysler 300M

    1981 Buick Regal

    1994 Honda Prelude

    2020 Audi A3

    2003 Kia Rio

    2009 Mazda RX-8

    2000 Lexus LX470

    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.