Garage
Shop
Loading...
filter-icon Filters & Sort

DS18 DX2 (2-Pairs, 4-Total)

1840W Peak (920W) RMS 6.5” DX Series 2-Way Component Speakers w/ Silk Dome Tweeters (2-Pairs)

Go to item page Right Arrow Icon of Right Arrow

1840W Peak (920W) RMS 6.5” DX Series 2-Way Component Speakers w/ Silk Dome Tweeters (2-Pairs)

• 460 watts Max Each, 230 watts RMS Each
• 1.18" Silk Dome Tweeters
• Carbon Fiber cone material
• Impedance: 4 ohm
• Sensitivity: 89 dB
• Mounting Depth: 2.85

found car based on your search
Fits your Optima
1
List price $799.90
-25% $599.90

• 460 watts Max Each, 230 watts RMS Each
• 1.18" Silk Dome Tweeters
• Carbon Fiber cone material
• Impedance: 4 ohm
• Sensitivity: 89 dB
• Mounting Depth: 2.85

Hertz CK 165 (2-Pairs, 4-Total)

570W Peak (190W RMS) 6.5" Cento Series 2-Way Component Speaker system (2-Pairs)

Go to item page Right Arrow Icon of Right Arrow

570W Peak (190W RMS) 6.5" Cento Series 2-Way Component Speaker system (2-Pairs)

• 142 Watts Max Each, 45 Watts RMS Each
•Semi Pressed Paper-Mica cone material
• Tetolon Tweeter dome
• 4 Ohm Impedance
• Sensitivity: 93 dB
• Mounting Depth: 2"

Save 15% Off Package Deals at Checkout!
found car based on your search
Fits your Optima
1
List price $960.00
-17% $799.98

• 142 Watts Max Each, 45 Watts RMS Each
•Semi Pressed Paper-Mica cone material
• Tetolon Tweeter dome
• 4 Ohm Impedance
• Sensitivity: 93 dB
• Mounting Depth: 2"

NVX - Worth the Envy - Direct to Consumer Car Audio

JBL Stage3 627F (Stage 3 627F) (2-Pairs, 4-Total)

540W Peak (180W RMS) 6.5" Stage3 Series 2-Way 3-Ohm Coaxial Car Speaker (2-Pairs)

Go to item page Right Arrow Icon of Right Arrow

540W Peak (180W RMS) 6.5" Stage3 Series 2-Way 3-Ohm Coaxial Car Speaker (2-Pairs)

• 135 watts Max Each, 45 watts RMS Each
• Dome Tweeters
• Plus One™ polypropylene woofer cones
• Impedance: 3 ohm
• Sensitivity: 92 dB @2.83V
• Mounting Depth: 1.91"

Save 15% Off Package Deals at Checkout!
found car based on your search
Fits your Optima
3
List price $199.90
-20% $159.90

• 135 watts Max Each, 45 watts RMS Each
• Dome Tweeters
• Plus One™ polypropylene woofer cones
• Impedance: 3 ohm
• Sensitivity: 92 dB @2.83V
• Mounting Depth: 1.91"

Hertz CX 690 (2-Pairs, 4-Total)

1200W Peak (400W RMS) 6x9" Cento Series 3-Way Coaxial Car Speakers (2-Pairs)

Go to item page Right Arrow Icon of Right Arrow

1200W Peak (400W RMS) 6x9" Cento Series 3-Way Coaxial Car Speakers (2-Pairs)

• 300 watts Peak Each, 100 watts RMS Each
• 1-5/8 PEI (Polyetherimide) Dome Tweeters
• Semi-pressed paper + Mica cone material
• Impedance: 4 ohm
• Sensitivity: 94.5 dB

Save 15% Off Package Deals at Checkout!
found car based on your search
Fits your Optima
3
List price $790.00
-11% $699.98

• 300 watts Peak Each, 100 watts RMS Each
• 1-5/8 PEI (Polyetherimide) Dome Tweeters
• Semi-pressed paper + Mica cone material
• Impedance: 4 ohm
• Sensitivity: 94.5 dB

Infinity KAPPA 693C (2-Pairs, 4-Total)

870W Peak (290W RMS) Kappa Series 6x9” Component Speaker System (2-Pairs)

Go to item page Right Arrow Icon of Right Arrow

870W Peak (290W RMS) Kappa Series 6x9” Component Speaker System (2-Pairs)

• 435 watts Peak Each, 145 watts RMS Each
• 3/4" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 91 dB

Save 15% Off Package Deals at Checkout!
found car based on your search
Fits your Optima
List price $1099.90
-27% $799.90

• 435 watts Peak Each, 145 watts RMS Each
• 3/4" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 91 dB

JBL STAGE1 621 (STAGE1621) (2-Pairs, 4-Total)

700W Peak (140W RMS) 6.5" Stage1 Series 2-way Coaxial Car Speakers (2-Pairs)

Go to item page Right Arrow Icon of Right Arrow

700W Peak (140W RMS) 6.5" Stage1 Series 2-way Coaxial Car Speakers (2-Pairs)

• 175 watts Peak Each, 35 watts RMS Each
• PEI (Polyetherimide) Balanced Dome Tweeters
• Injection Molded Polypropylene - IMPP cone material
• Impedance: 4 ohm
• Sensitivity: 90 dB

found car based on your search
Fits your Optima
5
List price $199.98
-50% $99.90

• 175 watts Peak Each, 35 watts RMS Each
• PEI (Polyetherimide) Balanced Dome Tweeters
• Injection Molded Polypropylene - IMPP cone material
• Impedance: 4 ohm
• Sensitivity: 90 dB

2) Hifonics ZS693 6x9" Coaxial Speakers + (2) ZS653 6.5" Speakers

(2) 800W 6x9" 3-Way + (2) 600W 6.5" 3-Way Coaxial Package

Go to item page Right Arrow Icon of Right Arrow

(2) 800W 6x9" 3-Way + (2) 600W 6.5" 3-Way Coaxial Package

• 400 Watts Max Each, 60 Watts RMS Each
• 1" Mylar Dome Tweeter
• Alpha-Cellulose Cones
• 4 Ohm Impedance
• Sensitivity: 88 dB
• Mounting Depth: 3.35"

found car based on your search
Fits your Optima
50
List price $84.98
-22% $65.99

• 400 Watts Max Each, 60 Watts RMS Each
• 1" Mylar Dome Tweeter
• Alpha-Cellulose Cones
• 4 Ohm Impedance
• Sensitivity: 88 dB
• Mounting Depth: 3.35"

Hifonics ZS693 (2-Pairs, 4-Total)

1600W Max (240W RMS) 6x9" Zeus 3-Way Coaxial Car Speakers (2-Pairs)

Go to item page Right Arrow Icon of Right Arrow

1600W Max (240W RMS) 6x9" Zeus 3-Way Coaxial Car Speakers (2-Pairs)

• 400 Watts Max Each, 60 Watts RMS Each
• 1" Mylar Dome Tweeter
• Alpha-Cellulose Cones
• 4 Ohm Impedance
• Sensitivity: 88 dB
• Mounting Depth: 3.35"

found car based on your search
Fits your Optima
36
List price $99.98
-36% $63.98

• 400 Watts Max Each, 60 Watts RMS Each
• 1" Mylar Dome Tweeter
• Alpha-Cellulose Cones
• 4 Ohm Impedance
• Sensitivity: 88 dB
• Mounting Depth: 3.35"

Pioneer TS-A6961F (2-Pairs, 4-Total)

1800W Peak (360W RMS) 6x9" A-Series 4-way Coaxial Car Speakers (2-Pairs)

Go to item page Right Arrow Icon of Right Arrow

1800W Peak (360W RMS) 6x9" A-Series 4-way Coaxial Car Speakers (2-Pairs)

• 450 watts Peak Each, 90 watts RMS Each
• 0.71" PET Hard Dome Tweeters
• Carbon Mica cone material
• Impedance: 4 ohm
• Sensitivity: 92 dB

found car based on your search
Fits your Optima
4
List price $220.00
-39% $133.98

• 450 watts Peak Each, 90 watts RMS Each
• 0.71" PET Hard Dome Tweeters
• Carbon Mica cone material
• Impedance: 4 ohm
• Sensitivity: 92 dB

BRAND NEW 4 x CRUNCH 6.5-INCH 6-1/2" 3-WAY CAR AUDIO COAXIAL SPEAKERS 300 WATTS

BRAND NEW 4 x CRUNCH 6.5-INCH 6-1/2" 3-WAY CAR AUDIO COAXIAL SPEAKERS 300 WATTS

Go to item page Right Arrow Icon of Right Arrow

BRAND NEW 4 x CRUNCH 6.5-INCH 6-1/2" 3-WAY CAR AUDIO COAXIAL SPEAKERS 300 WATTS

• Peak Power: 300W
• RMS Power: 150W
• Neo Mylar Soft Dome Tweeter
• Impedance: 4 ohm
• Cellulose Cone and Rubber Surround

found car based on your search
Fits your Optima
21
List price $65.98
-18% $53.98

• Peak Power: 300W
• RMS Power: 150W
• Neo Mylar Soft Dome Tweeter
• Impedance: 4 ohm
• Cellulose Cone and Rubber Surround

Hertz MPK165.3 (2-Pairs, 4-Total)

880W Peak (440W RMS) 6.5" Mille PRO Series 2-Way 4 Ohm Component speaker system (2-Pairs)

Go to item page Right Arrow Icon of Right Arrow

880W Peak (440W RMS) 6.5" Mille PRO Series 2-Way 4 Ohm Component speaker system (2-Pairs)

• 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

Save 15% Off Package Deals at Checkout!
found car based on your search
Fits your Optima
2
List price $1410.00
-15% $1,199.98

• 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

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 2003 Optima

    Q: Can I upgrade or change the Speakers in 2003 Kia Optima?

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

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

    2003 Kia Optima

    1998 Chrysler 300M

    2016 Chevrolet Volt

    2023 Ram 2500

    2008 Mitsubishi Raider

    1997 Saturn SL2

    2000 Lexus LX470

    2005 Cadillac STS

    2003 Kia Rio

    2020 Audi A3

    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.