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2003 Kia Optima

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

Speakers & Speaker Installation for 2003 Kia Optima

Find speakers to upgrade your sound and fit in the factory speaker location for your Optima.  After you choose your speakers, we'll help you find speaker adapters, speaker harnesses and other accessories for installation.

All car speakers

Shop All Speaker Locations in the Vehicle

See all speakers that fit, regardless of location.

Lower Front Door

Lower Front Door Speakers

Speakers for your lower front door.

Rear Deck Corner

Rear Deck Corner Speakers

Speakers for your corner rear deck

Upper Front Door Speakers

Upper Front Door Speakers

Speakers for your upper front door.

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Speakers with sound damping,
Price Range
Speaker Size
Refers to the size of the speaker measured in inches. Every vehicle has standard application sizes. Please use our vehicle fitment guide for your vehicle's specific speaker sizes if you do not know them.
Design
The number of individual drivers in a car speaker. Speakers with 2 drivers are known as a 2-way, and 3 drivers are known as a 3-way. Component systems are often referred to as "separates" because the tweeter is not attached to the midwoofer (main speaker driver) and mounts separately in a location such as a door post. Component systems typically come with an external crossover so you can easily adjust the high and low frequencies sent to both the midwoofer and the tweeter. Center channel speakers are great for those looking to have surround sound in their vehicle.
RMS Power Handling
The RMS power is the amount of power the speaker requires to operate safely and properly. RMS Power Handling refers to the amount of power a speaker can handle on a continuous basis. We recommend powering your speakers or subwoofer with 80%-120% of its recommended RMS rating. The RMS power handling specification is typically rated per speaker unless otherwise noted.
Peak Power Handling
Peak power handling refers to the amount of power a speaker can handle during a brief musical burst. The RMS power range figure is a much more reliable rating for determining the speaker's power requirements. The Peak power handling specification is typically rated per speaker unless otherwise noted.
Sensitivity
An efficiency or sensitivity rating tells you how effectively a speaker converts power into sound. The higher the number, the more efficient the speaker and the louder it will play with the same input power. An efficient speaker helps you maximize your available power. Most sensitivity ratings measure the speaker's output with 1 watt of input, 1 meter from the speaker. Some speakers' sensitivity is measured with 2.83 volts of input, instead of 1 watt.
  Efficiency (1w/1m) is not an accurate indicator of a subwoofer's output capability and should not be used as a comparison to other speakers or subwoofers to determine which one is "louder".
Impedance (Per Voice Coil)
The load value (in ohms) that the speakers present to the amplifier per voice coil - the amount of resistance to the current flow. This is a key specification as subs wired in parallel or low impedances can create problems with your amplifier and potentially void all warranties. We encourage you to ask our support department prior to purchase if you do not understand which impedance level will suit your application best.
Shallow Mount Installation
This means that the subwoofer/speaker is designed to be installed in areas that do not have a lot of space. Shallow mount subwoofers are typically found under a seat or behind the seat in some trucks.

Shallow mount speakers will typically have a mounting depth of 2" or less, while shallow mount subwoofers will typically have a mounting depth of 3" or less.
Tweeter Design
Designs such as cone, dome, semi-dome, balanced dome, and whizzer are most popular. Cone tweeters are simple, efficient and typically are the most reasonably priced. Dome tweeters are used in most home speakers, and provide a smoother and more accurate sound. Semi-dome design is one with a dome placed inside a cone. A Balanced dome driver is a semi-dome with equal reproduction area given the cone and dome portions of the driver. A whizzer tweeter is a separate tweeter cone driven by the voice coil of the woofer.
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Infinity REF697F with Sound Damping

600W Peak (200W RMS) 6x9" Reference Series 2-way 4-ohm Speakers + NVX SDSK2 Sound Damping

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Infinity REF697F with Sound Damping

600W Peak (200W RMS) 6x9" Reference Series 2-way 4-ohm Speakers + NVX SDSK2 Sound Damping

• 300 watts Peak Each, 100 watts RMS Each
• 1" Textile Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 94 dB

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Fits your Optima
54
List price $188.69
-33% $126.94

In stock.

Add to Cart

• 300 watts Peak Each, 100 watts RMS Each
• 1" Textile Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 94 dB

MB QUART PK1-169 with Sound Damping

220W Peak (110W RMS) 6x9" Premium Series 2-way 4-ohm Coaxial Car Speakers + NVX SDBSK2 Premium Sound Damping

PK1169_SDBSK2 big
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MB QUART PK1-169 with Sound Damping

220W Peak (110W RMS) 6x9" Premium Series 2-way 4-ohm Coaxial Car Speakers + NVX SDBSK2 Premium Sound Damping

• 110 watts Peak Each, 55 watts RMS Each
• 1" Magnesium Dome Tweeters
• Paper Fiber with Mica Coating curvilinear cone material
• Impedance: 4 ohm
• Sensitivity: 85.5 dB

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48
List price $238.73
-30% $167.73

Available

Ships in 10-14 days

Add to Cart

• 110 watts Peak Each, 55 watts RMS Each
• 1" Magnesium Dome Tweeters
• Paper Fiber with Mica Coating curvilinear cone material
• Impedance: 4 ohm
• Sensitivity: 85.5 dB

NVX - Worth the Envy - Direct to Consumer Car Audio

Hertz CK 165F with Sound Damping

270W Peak (90W RMS) 6.5" Cento Series 2-Way Flat-profile Component Speaker system + NVX SDSK2 Sound Damping

CK165F_SDSK2 big
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Hertz CK 165F with Sound Damping

270W Peak (90W RMS) 6.5" Cento Series 2-Way Flat-profile Component Speaker system + NVX SDSK2 Sound Damping

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

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48
List price $498.74
-17% $414.98

Available

Ships in 10-14 days

Add to Cart

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

DS18 PRO-X698BM with Sound Damping

550W Peak (275W RMS) 6x9” PRO-X Series 8-ohm Mid-Range Loudspeaker + NVX SDBSK2 Premium Sound Damping

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DS18 PRO-X698BM with Sound Damping

550W Peak (275W RMS) 6x9” PRO-X Series 8-ohm Mid-Range Loudspeaker + NVX SDBSK2 Premium Sound Damping

• 550 watts Peak Each, 275 watts RMS Each
• Non-Pressed Paper cone material
• Impedance: 8 ohm
• Sensitivity: 98 dB

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48
List price $102.69
-8% $94.44

In stock.

Add to Cart

• 550 watts Peak Each, 275 watts RMS Each
• Non-Pressed Paper cone material
• Impedance: 8 ohm
• Sensitivity: 98 dB

Diamond Audio H65SH with Sound Damping

300W Peak (150W RMS) 6.5" HEX 2-Way Shallow Component Speakers + NVX SDSK2 Sound Damping

H65SH_SDSK2 big
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Diamond Audio H65SH with Sound Damping

300W Peak (150W RMS) 6.5" HEX 2-Way Shallow Component Speakers + NVX SDSK2 Sound Damping

• 150 watts Max Each, 75 watts RMS Each
• 2" Neodymium tweeters available in silk or aluminum
• Hard anodized black aluminum cone
• Impedance: 4 ohm
• Sensitivity: 89 dB
• Mounting Depth: 1.3"

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48
$764.98

In stock.

Add to Cart

• 150 watts Max Each, 75 watts RMS Each
• 2" Neodymium tweeters available in silk or aluminum
• Hard anodized black aluminum cone
• Impedance: 4 ohm
• Sensitivity: 89 dB
• Mounting Depth: 1.3"

DS18 PRO-X6MSE (Sold Individually) with Sound Damping

450W Peak (225W RMS) 6.5” PRO-X Series 8-ohm Mid-Range Loudspeaker + NVX SDBSK2 Premium Sound Damping

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DS18 PRO-X6MSE (Sold Individually) with Sound Damping

450W Peak (225W RMS) 6.5” PRO-X Series 8-ohm Mid-Range Loudspeaker + NVX SDBSK2 Premium Sound Damping

• 450 watts Peak Each, 225 watts RMS Each
• Non-Pressed Paper cone material
• Impedance: 8 ohm
• Sensitivity: 95 dB

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48
List price $66.69
-12% $58.44

In stock.

Add to Cart

• 450 watts Peak Each, 225 watts RMS Each
• Non-Pressed Paper cone material
• Impedance: 8 ohm
• Sensitivity: 95 dB

DS18 PRO-X6.4MSQ (Sold Individually) with Sound Damping

500W Peak (250W RMS) 6.5"x6.5" PRO-X Series 4-ohm Square Midrange Loudspeaker + NVX SDBSK2 Premium Sound Damping

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DS18 PRO-X6.4MSQ (Sold Individually) with Sound Damping

500W Peak (250W RMS) 6.5"x6.5" PRO-X Series 4-ohm Square Midrange Loudspeaker + NVX SDBSK2 Premium Sound Damping

• 500 watts Peak Each, 250 watts RMS Each
• Square midrange construction
• Paper cone material
• Impedance: 4 ohm
• Sensitivity: 95 dB

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48
List price $78.69
-10% $70.44

In stock.

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• 500 watts Peak Each, 250 watts RMS Each
• Square midrange construction
• Paper cone material
• Impedance: 4 ohm
• Sensitivity: 95 dB

Diamond Audio HXPRO653DI with Sound Damping

360W Peak (180W RMS) 6.5" HEX PRO Diamante Italia Series 3-Way Component Speaker System + NVX SDSK2 Sound Damping

HXPRO653DI_SDSK2 big
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Diamond Audio HXPRO653DI with Sound Damping

360W Peak (180W RMS) 6.5" HEX PRO Diamante Italia Series 3-Way Component Speaker System + NVX SDSK2 Sound Damping

• 180 watts Peak Each, 90 watts RMS Each
• 1" Silk Dome Tweeters
• Composite Bronze Fiberglass cone material
• Impedance: 3.3 ohm
• Sensitivity: 89 dB

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48
$3,314.98

In stock.

Add to Cart

• 180 watts Peak Each, 90 watts RMS Each
• 1" Silk Dome Tweeters
• Composite Bronze Fiberglass cone material
• Impedance: 3.3 ohm
• Sensitivity: 89 dB

JBL Arena X 36Be (JBLSPKAXAM) with Sound Damping

400W Max (200W RMS) 6.5" Arena X Series 3-way 4-ohm Component Speaker System + NVX SDBSK2 Premium Sound Damping

ARENAX36BE_SDBSK2 big
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JBL Arena X 36Be (JBLSPKAXAM) with Sound Damping

400W Max (200W RMS) 6.5" Arena X Series 3-way 4-ohm Component Speaker System + NVX SDBSK2 Premium Sound Damping

• 200 watts Peak Each, 100 watts RMS Each
• 1" Beryllium Edge Driven Dome tweeters
• Carbon Fiber cone material
• Impedance: 4 ohm
• Sensitivity: 90 dB

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48
List price $5518.69
-9% $5,014.94

Available

Ships in 10-14 days

Add to Cart

• 200 watts Peak Each, 100 watts RMS Each
• 1" Beryllium Edge Driven Dome tweeters
• Carbon Fiber cone material
• Impedance: 4 ohm
• Sensitivity: 90 dB

Rockford Fosgate Power T3652-S with Sound Damping

500W Peak (250W RMS) 6.5" T3 Power Series 2-way 4-ohm Component Speaker System + NVX SDBSK2 Premium Sound Damping

T3652S_SDBSK2 big
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Rockford Fosgate Power T3652-S with Sound Damping

500W Peak (250W RMS) 6.5" T3 Power Series 2-way 4-ohm Component Speaker System + NVX SDBSK2 Premium Sound Damping

• 250 watts Peak Each, 125 watts RMS Each
• 1" Silk Dome tweeters with neodymium motor
• Liquid Crystal Polymer (LCP) cone material
• Impedance: 4 ohm
• Sensitivity: 87.5 dB

Save 15% Off Package Deals at Checkout!
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55
List price $1318.73
$1,314.98

Available

Ships in 10-14 days

Add to Cart

• 250 watts Peak Each, 125 watts RMS Each
• 1" Silk Dome tweeters with neodymium motor
• Liquid Crystal Polymer (LCP) cone material
• Impedance: 4 ohm
• Sensitivity: 87.5 dB

Infinity KAPPA 693C with Sound Damping

435W Peak (145W RMS) Kappa Series 6x9” Component Speaker System with Sound Damping

KAPPA693CF_SDSK2 big Out of stock
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Infinity KAPPA 693C with Sound Damping

435W Peak (145W RMS) Kappa Series 6x9” Component Speaker System with Sound Damping

• 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!
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Fits your Optima
48
List price $568.69
-27% $414.94
Add to Cart

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

Infinity KAPPA 693C with Installation Accessories

435W Peak (145W RMS) Kappa Series 6x9” Component Speaker System + 6x9" Speaker Baffles + Sound Damping, Roller and Panel Removal Kit

KAPPA693CF_ACC_KIT big Out of stock
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Infinity KAPPA 693C with Installation Accessories

435W Peak (145W RMS) Kappa Series 6x9” Component Speaker System + 6x9" Speaker Baffles + Sound Damping, Roller and Panel Removal Kit

• 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!
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269
List price $642.66
-30% $446.73
Add to Cart

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

JBL GX628 (GX628AM) with Sound Damping

360W Peak (120W RMS) 6.5" GX Series 2-way 2.3-ohm Coaxial Car Speakers + NVX SDBSK2 Premium Sound Damping

GX628AM_SDBSK2 big Out of stock
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JBL GX628 (GX628AM) with Sound Damping

360W Peak (120W RMS) 6.5" GX Series 2-way 2.3-ohm Coaxial Car Speakers + NVX SDBSK2 Premium Sound Damping

• 180 watts Peak Each, 60 watts RMS Each
• 1" Edge-driven Soft Dome tweeters with Harman-proprietary deflector
• Polypropylene cone material with Plus One woofer cone architecture
• Impedance: 2.3 ohm
• Sensitivity: 92 dB

Save 15% Off Package Deals at Checkout!
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Fits your Optima
49
List price $98.73
-14% $84.98
Add to Cart

• 180 watts Peak Each, 60 watts RMS Each
• 1" Edge-driven Soft Dome tweeters with Harman-proprietary deflector
• Polypropylene cone material with Plus One woofer cone architecture
• Impedance: 2.3 ohm
• Sensitivity: 92 dB

Hertz SV 165.1 with Installation Accessories

800W Peak (400W RMS) 6.5" SPL Show Series 4-ohm midrange car speakers + 6.5" Speaker Baffles + Sound Damping, Roller and Panel Removal Kit

SV1651_ACC_KIT big Out of stock
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Hertz SV 165.1 with Installation Accessories

800W Peak (400W RMS) 6.5" SPL Show Series 4-ohm midrange car speakers + 6.5" Speaker Baffles + Sound Damping, Roller and Panel Removal Kit

• 400 watts Peak Each, 200 watts RMS Each
• Paper cone material
• Impedance: 4 ohm
• Sensitivity: 97 dB

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Fits your Optima
339
List price $377.71
-22% $294.05
Add to Cart

• 400 watts Peak Each, 200 watts RMS Each
• Paper cone material
• Impedance: 4 ohm
• Sensitivity: 97 dB

Alpine R2-S653 with Sound Damping

600W Peak (200W RMS) 6.5" R-Series PRO 3-Way Component Speakers with Magnesium Hard-Dome Tweeters + NVX SDSK2 Sound Damping

R2S653_SDSK2 big Out of stock
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Alpine R2-S653 with Sound Damping

600W Peak (200W RMS) 6.5" R-Series PRO 3-Way Component Speakers with Magnesium Hard-Dome Tweeters + NVX SDSK2 Sound Damping

• 300 watts Peak Each, 100 watts RMS Each
• 1" Magnesium Hard Dome Tweeters
• Glass Fiber cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB

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48
List price $858.74
-33% $574.94
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• 300 watts Peak Each, 100 watts RMS Each
• 1" Magnesium Hard Dome Tweeters
• Glass Fiber cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB

Limited time!

NVX XSP65KIT with Sound Damping

600W Peak (200W RMS) 6.5" X-Series 2-Way Component Speaker System with Carbon Fiber Cones and 25mm Silk Dome Tweeters + NVX SDBSK2 Premium Sound Damping

XSP65KIT_SDBSK2 big Out of stock
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NVX XSP65KIT with Sound Damping

600W Peak (200W RMS) 6.5" X-Series 2-Way Component Speaker System with Carbon Fiber Cones and 25mm Silk Dome Tweeters + NVX SDBSK2 Premium Sound Damping

• 300 watts Peak Each, 100 watts RMS Each
• 1" Silk Dome Tweeters
• Carbon Fiber cone material
• Impedance: 4 ohm
• Sensitivity: 92 dB

Purchase $400 or More of NVX and Save 15%!
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60
List price $210.73
-14% $180.48
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• 300 watts Peak Each, 100 watts RMS Each
• 1" Silk Dome Tweeters
• Carbon Fiber cone material
• Impedance: 4 ohm
• Sensitivity: 92 dB

Limited time!

NVX XSP69KIT with Sound Damping

600W Peak (300W RMS) 6x9" X-Series 2-Way Component Speaker System with Carbon Fiber Cones and 25mm Silk Dome Tweeters + NVX SDBSK2 Premium Sound Damping

XSP69KIT_SDBSK2 big Out of stock
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NVX XSP69KIT with Sound Damping

600W Peak (300W RMS) 6x9" X-Series 2-Way Component Speaker System with Carbon Fiber Cones and 25mm Silk Dome Tweeters + NVX SDBSK2 Premium Sound Damping

• 300 watts Peak Each, 150 watts RMS Each
• 1" Silk Dome Tweeters
• Carbon Fiber cone material
• Impedance: 4 ohm
• Sensitivity: 96 dB

Purchase $400 or More of NVX and Save 15%!
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53
List price $222.73
-17% $184.98
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• 300 watts Peak Each, 150 watts RMS Each
• 1" Silk Dome Tweeters
• Carbon Fiber cone material
• Impedance: 4 ohm
• Sensitivity: 96 dB

Rockford Fosgate Punch P165-SI with Sound Damping

240W Peak (120W RMS) 6.5" Punch Series 2-way 4-ohm Component Speaker System + NVX SDBSK2 Premium Sound Damping

P165SI_SDBSK2 big Out of stock
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Rockford Fosgate Punch P165-SI with Sound Damping

240W Peak (120W RMS) 6.5" Punch Series 2-way 4-ohm Component Speaker System + NVX SDBSK2 Premium Sound Damping

• 120 watts Peak Each, 60 watts RMS Each
• 1" treated PEI (Polyetherimide) Dome Tweeters
• Injection molded mineral filled Mineral-Filled Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB

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57
List price $178.73
$174.98
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• 120 watts Peak Each, 60 watts RMS Each
• 1" treated PEI (Polyetherimide) Dome Tweeters
• Injection molded mineral filled Mineral-Filled Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB

Infinity REF607F with Sound Damping

360W Peak (120W RMS) 6.5" Reference Series 2-way 4-ohm Coaxial Speakers + NVX SDSK2 Sound Damping

REF607F_SDSK2 big Out of stock
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Infinity REF607F with Sound Damping

360W Peak (120W RMS) 6.5" Reference Series 2-way 4-ohm Coaxial Speakers + NVX SDSK2 Sound Damping

• 180 watts Peak Each, 60 watts RMS Each
• 1" Textile Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 93 dB

Save 15% Off Package Deals at Checkout!
found car based on your search
Fits your Optima
50
List price $168.69
-34% $110.94
Add to Cart

• 180 watts Peak Each, 60 watts RMS Each
• 1" Textile Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 93 dB

JBL GX9638 (JBLGX9638AM) with Sound Damping

600W Peak (200W RMS) 6x9" GX Series 3-way 2.3-ohm Coaxial Car Speakers + NVX SDBSK2 Premium Sound Damping

GX9638_SDBSK2 big Out of stock
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JBL GX9638 (JBLGX9638AM) with Sound Damping

600W Peak (200W RMS) 6x9" GX Series 3-way 2.3-ohm Coaxial Car Speakers + NVX SDBSK2 Premium Sound Damping

• 300 watts Peak Each, 100 watts RMS Each
• 1" Soft Dome tweeters
• Polypropylene cone material
• Impedance: 2.3 ohm
• Sensitivity: 94 dB

found car based on your search
Fits your Optima
64
List price $118.69
-12% $104.94
Add to Cart

• 300 watts Peak Each, 100 watts RMS Each
• 1" Soft Dome tweeters
• Polypropylene cone material
• Impedance: 2.3 ohm
• Sensitivity: 94 dB

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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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