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2005 Cadillac STS

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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 2005 Cadillac STS

Find speakers to upgrade your sound and fit in the factory speaker location for your STS.  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.

Center Dash Speaker(s)

Center Dash Speakers

Speakers for your center dash

Dash Corner

Dash Corner Speakers

Speakers for your dash corner

Front Door Panel Speakers

Front Door Speakers

Speakers for your front door panels

Rear Deck Corner

Rear Deck Corner Speakers

Speakers for your corner rear deck

Rear Door Panel Speakers

Rear Door Panel Speakers

Speakers for your rear door panels

Under Front Seat

Under Front Seat Speakers

Speakers for your under front seat.

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Speakers with sound damping,
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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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Diamond Audio H65S with Sound Damping

300W Peak (150W RMS) 6.5" HEX Series 2-Way Component Speaker System + NVX SDSK2 Sound Damping

H65S_SDSK2 big
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Diamond Audio H65S with Sound Damping

300W Peak (150W RMS) 6.5" HEX Series 2-Way Component Speaker System + NVX SDSK2 Sound Damping

• 150 watts Peak Each, 75 watts RMS Each
• 1" Silk Dome Tweeters
• Anodized Aluminum cone material
• Impedance: 4 ohm
• Sensitivity: 88.3 dB

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$784.98

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• 150 watts Peak Each, 75 watts RMS Each
• 1" Silk Dome Tweeters
• Anodized Aluminum cone material
• Impedance: 4 ohm
• Sensitivity: 88.3 dB

Rockford Fosgate Power T1650 with Sound Damping

300W Peak (150W RMS) 6.5" Power Series 2-way 4-ohm Coaxial Car Speakers + NVX SDBSK2 Premium Sound Damping

T1650_SDBSK2 big
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Rockford Fosgate Power T1650 with Sound Damping

300W Peak (150W RMS) 6.5" Power Series 2-way 4-ohm Coaxial Car Speakers + NVX SDBSK2 Premium Sound Damping

• 150 watts Peak Each, 75 watts RMS Each
• 1" Aluminum Dome tweeters
• Injection-molded Carbon Fiber-filled Polypropylene cone material with Vertical Attach Surround Technique (VAST)
• Impedance: 4 ohm
• Sensitivity: 88 dB

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58
List price $238.73
$234.98

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• 150 watts Peak Each, 75 watts RMS Each
• 1" Aluminum Dome tweeters
• Injection-molded Carbon Fiber-filled Polypropylene cone material with Vertical Attach Surround Technique (VAST)
• Impedance: 4 ohm
• Sensitivity: 88 dB

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AudioControl PNW-35 with Sound Damping

100W Peak (30W RMS) 3.5″ PNW Series High-fidelity 2-way 2-ohm Coaxial Speakers + NVX SDSK2 Sound Damping

PNW35_SDSK2 big
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AudioControl PNW-35 with Sound Damping

100W Peak (30W RMS) 3.5″ PNW Series High-fidelity 2-way 2-ohm Coaxial Speakers + NVX SDSK2 Sound Damping

• 50 watts Peak Each, 15 watts RMS Each
• 1" Silk Dome Tweeters
• Rigid Poly Mica cone material
• Impedance: 2 ohm
• Edge-enhanced steel frame

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50
List price $187.74
-13% $163.99

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• 50 watts Peak Each, 15 watts RMS Each
• 1" Silk Dome Tweeters
• Rigid Poly Mica cone material
• Impedance: 2 ohm
• Edge-enhanced steel frame

JBL Stage3 607C (STAGE3607CAM) with Sound Damping

300W Peak (100W RMS) 6.5" Stage3 Series 2-way 3-ohm Component Speaker System + NVX SDBSK2 Premium Sound Damping

STAGE3607CAM_SDBSK2 big
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JBL Stage3 607C (STAGE3607CAM) with Sound Damping

300W Peak (100W RMS) 6.5" Stage3 Series 2-way 3-ohm Component Speaker System + NVX SDBSK2 Premium Sound Damping

• 150 watts Peak Each, 50 watts RMS Each
• 1" PEI (Polyetherimide) Edge Driven Dome tweeters
• Polypropylene cone material
• Impedance: 3 ohm
• Sensitivity: 92 dB

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49
List price $198.69
-27% $144.94

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• 150 watts Peak Each, 50 watts RMS Each
• 1" PEI (Polyetherimide) Edge Driven Dome tweeters
• Polypropylene cone material
• Impedance: 3 ohm
• Sensitivity: 92 dB

Kenwood eXcelon XR-1801P with Sound Damping

660W Peak (240W RMS) 6.5" eXcelon Series 2-way 3-ohm Component Speaker System + NVX SDBSK2 Premium Sound Damping

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Kenwood eXcelon XR-1801P with Sound Damping

660W Peak (240W RMS) 6.5" eXcelon Series 2-way 3-ohm Component Speaker System + NVX SDBSK2 Premium Sound Damping

• 330 watts Peak Each, 120 watts RMS Each
• 1-3/16" Titanium Hard Dome tweeters
• Glass Fiber cone material
• Impedance: 3 ohm
• Sensitivity: 87 dB

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List price $548.74
-33% $369.49

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• 330 watts Peak Each, 120 watts RMS Each
• 1-3/16" Titanium Hard Dome tweeters
• Glass Fiber cone material
• Impedance: 3 ohm
• Sensitivity: 87 dB

Hertz C 165 F with Sound Damping

420W Peak (140W RMS) 6.5" Cento Series Mid-Bass Woofer + NVX SDSK2 Sound Damping

C165F_SDSK2 big
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Hertz C 165 F with Sound Damping

420W Peak (140W RMS) 6.5" Cento Series Mid-Bass Woofer + NVX SDSK2 Sound Damping

• 210 watts Peak Each, 70 watts RMS Each
• Semi-Pressed paper with Mica cone material
• Impedance: 4 ohm
• Sensitivity: 93 dB

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48
List price $248.74
-14% $214.98

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• 210 watts Peak Each, 70 watts RMS Each
• Semi-Pressed paper with Mica cone material
• Impedance: 4 ohm
• Sensitivity: 93 dB

Infinity Kappa 63XF with Sound Damping

510W Peak (170W RMS) 6.5" Kappa Series 2-Way Coaxial Speakers with Silk Dome Tweeters + NVX SDSK2 Sound Damping

KAPPA63XF_SDSK2 big
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Infinity Kappa 63XF with Sound Damping

510W Peak (170W RMS) 6.5" Kappa Series 2-Way Coaxial Speakers with Silk Dome Tweeters + NVX SDSK2 Sound Damping

• 255 watts Peak Each, 85 watts RMS Each
• Silk Dome Tweeters
• Glass Fiber cone material
• Impedance: 3 ohm
• Sensitivity: 93 dB

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58
List price $318.69
-33% $214.94

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• 255 watts Peak Each, 85 watts RMS Each
• Silk Dome Tweeters
• Glass Fiber cone material
• Impedance: 3 ohm
• Sensitivity: 93 dB

Diamond Audio DESK3 with Sound Damping

100W Peak (50W RMS) 3.5" Elite Series 3-Way Component Speaker System + NVX SDSK2 Sound Damping

DESK3_SDSK2 big
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Diamond Audio DESK3 with Sound Damping

100W Peak (50W RMS) 3.5" Elite Series 3-Way Component Speaker System + NVX SDSK2 Sound Damping

• 100 watts Peak Each, 25 watts RMS Each
• 1" Aluminum Dome Tweeters
• Composite foam core carbon fiber cone material
• Impedance: 4 ohm
• Sensitivity: 83 dB

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48
List price $308.73
$304.98

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• 100 watts Peak Each, 25 watts RMS Each
• 1" Aluminum Dome Tweeters
• Composite foam core carbon fiber cone material
• Impedance: 4 ohm
• Sensitivity: 83 dB

Cerwin-Vega V465C with Sound Damping

800W Peak (200W RMS) 6.5" Vega Series 2-Way Component Speaker System + NVX SDSK2 Sound Damping

V465C_SDSK2 big
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Cerwin-Vega V465C with Sound Damping

800W Peak (200W RMS) 6.5" Vega Series 2-Way Component Speaker System + NVX SDSK2 Sound Damping

• 400 watts Peak Each, 100 watts RMS Each
• 1" Titanium Dome Tweeters
• Curvilinear mica fiber composite cone material
• Impedance: 4 ohm
• Sensitivity: 94 dB

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59
List price $234.73
-17% $194.98

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• 400 watts Peak Each, 100 watts RMS Each
• 1" Titanium Dome Tweeters
• Curvilinear mica fiber composite cone material
• Impedance: 4 ohm
• Sensitivity: 94 dB

AudioControl PNW-65 with Sound Damping

200W Peak (150W RMS) 6.5″ PNW Series 2-way Coaxial Speakers + NVX SDSK2 Sound Damping

PNW65_SDSK2 big
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AudioControl PNW-65 with Sound Damping

200W Peak (150W RMS) 6.5″ PNW Series 2-way Coaxial Speakers + NVX SDSK2 Sound Damping

• 100 watts Peak Each, 50 watts RMS Each
• 1" Silk Dome Tweeters
• Rigid Poly Mica cone material
• Impedance: 3 ohm
• Sensitivity: 88.9 dB

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51
List price $297.74
-8% $273.99

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• 100 watts Peak Each, 50 watts RMS Each
• 1" Silk Dome Tweeters
• Rigid Poly Mica cone material
• Impedance: 3 ohm
• Sensitivity: 88.9 dB

Cerwin Vega CVMPCL6.5 with Sound Damping

200W Max (100W RMS) 6.5" Stroker Pro Series Coaxial Car Speaker + NVX SDSK2 Sound Damping

CVMPCL65_SDSK2 big
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Cerwin Vega CVMPCL6.5 with Sound Damping

200W Max (100W RMS) 6.5" Stroker Pro Series Coaxial Car Speaker + NVX SDSK2 Sound Damping

• 200 watts Peak , 100 watts RMS
• Impedance: 4 ohm
• Sensitivity: 93.2 dB

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57
List price $138.73
-17% $114.98

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• 200 watts Peak , 100 watts RMS
• Impedance: 4 ohm
• Sensitivity: 93.2 dB

Hertz CX 165 with Sound Damping

420W Peak (140W RMS) 6.5" Cento Series 2-Way Coaxial Car Speakers + NVX SDSK2 Sound Damping

CX165_SDSK2 big
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Hertz CX 165 with Sound Damping

420W Peak (140W RMS) 6.5" Cento Series 2-Way Coaxial Car Speakers + NVX SDSK2 Sound Damping

• 210 watts Peak Each, 70 watts RMS Each
• 15/16 Tetolon Dome Tweeters
• Semi-pressed paper+ Mica cone material
• Impedance: 4 ohm
• Sensitivity: 93 dB

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50
List price $278.74
-5% $264.98

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• 210 watts Peak Each, 70 watts RMS Each
• 15/16 Tetolon Dome Tweeters
• Semi-pressed paper+ Mica cone material
• Impedance: 4 ohm
• Sensitivity: 93 dB

JBL SHOCK WAVE 150W65 (JBLSPKSW150W65) with Sound Damping

600W Peak (300W RMS) 6.5" Shock Wave Series 4-ohm Midrange Car Speakers with Sound Damping

JBLSPKSW150W65_SDBSK2 big
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JBL SHOCK WAVE 150W65 (JBLSPKSW150W65) with Sound Damping

600W Peak (300W RMS) 6.5" Shock Wave Series 4-ohm Midrange Car Speakers with Sound Damping

• 300 watts Peak Each, 150 watts RMS Each
• Pressed Pulp Fiber cone material
• Impedance: 4 ohm
• Sensitivity: 96 dB

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53
List price $148.69
-9% $134.94

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• 300 watts Peak Each, 150 watts RMS Each
• Pressed Pulp Fiber cone material
• Impedance: 4 ohm
• Sensitivity: 96 dB

Rockford Fosgate Punch Pro PPS4-10 (Sold Individually) with Sound Damping

700W Peak (350W RMS) 10" Punch Pro Series Midrange Speaker + NVX SDBSK2 Premium Sound Damping

PPS410_SDBSK2 big
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Rockford Fosgate Punch Pro PPS4-10 (Sold Individually) with Sound Damping

700W Peak (350W RMS) 10" Punch Pro Series Midrange Speaker + NVX SDBSK2 Premium Sound Damping

• 700 watts Peak Each, 350 watts RMS Each
• Fiber-Reinforced High Strength Paper cone material
• Impedance: 4 ohm
• Sensitivity: 96 dB

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54
List price $268.73
$264.98

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• 700 watts Peak Each, 350 watts RMS Each
• Fiber-Reinforced High Strength Paper cone material
• Impedance: 4 ohm
• Sensitivity: 96 dB

Hertz CK 165 with Sound Damping

285W Peak (95W RMS) 6.5" Cento Series 2-Way Component Speaker system + NVX SDSK2 Sound Damping

CK165_SDSK2 big
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Hertz CK 165 with Sound Damping

285W Peak (95W RMS) 6.5" Cento Series 2-Way Component Speaker system + NVX SDSK2 Sound Damping

• 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"

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List price $498.74
-17% $414.98

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• 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"

Hertz CK 165L with Sound Damping

300W Peak (100W RMS) 6.5" Cento Series 2-Way Component Speaker system + NVX SDSK2 Sound Damping

CK165L_SDSK2 big
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Hertz CK 165L with Sound Damping

300W Peak (100W RMS) 6.5" Cento Series 2-Way Component Speaker system + NVX SDSK2 Sound Damping

• 150 Watts Max Each, 50 Watts RMS Each
•Non Pressed Paper cone material
• Tetolon Tweeter dome
• 4 Ohm Impedance
• Sensitivity: 92 dB

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List price $478.74
-13% $414.98

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• 150 Watts Max Each, 50 Watts RMS Each
•Non Pressed Paper cone material
• Tetolon Tweeter dome
• 4 Ohm Impedance
• Sensitivity: 92 dB

Hifonics ZS653 with Installation Accessories

600W Peak (100W RMS) Zeus 6.5" Series 3-Way Coaxial Car Speakers with Speaker Installation Kit + 6.5" Speaker Baffles + Sound Damping, Roller and Panel Removal Kit

ZS653_ACC_KIT big
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Hifonics ZS653 with Installation Accessories

600W Peak (100W RMS) Zeus 6.5" Series 3-Way Coaxial Car Speakers with Speaker Installation Kit + 6.5" Speaker Baffles + Sound Damping, Roller and Panel Removal Kit

• 300 Watts Max Each, 50 Watts RMS Each
• 1" Neo-Mylar Soft Dome Tweeter
• Alpha-Cellulose mid-woofer cone material
• 4 Ohm Impedance
• Sensitivity: 88dB
• CEA-426B compliant speakers

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List price $107.70
-29% $76.25

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• 300 Watts Max Each, 50 Watts RMS Each
• 1" Neo-Mylar Soft Dome Tweeter
• Alpha-Cellulose mid-woofer cone material
• 4 Ohm Impedance
• Sensitivity: 88dB
• CEA-426B compliant speakers

JBL Stadium 62CF (JBLSPKSD62CFAM) with Sound Damping

660W Peak (220W RMS) 6.5" Stadium Series 2-way 3-ohm Component Speaker System + NVX SDBSK2 Premium Sound Damping

STADIUM62CF_SDBSK2 big
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JBL Stadium 62CF (JBLSPKSD62CFAM) with Sound Damping

660W Peak (220W RMS) 6.5" Stadium Series 2-way 3-ohm Component Speaker System + NVX SDBSK2 Premium Sound Damping

• 330 watts Peak Each, 110 watts RMS Each
• 3/4" Aluminum Dome Tweeters
• Glass Fiber cone material
• Impedance: 3 ohm
• Sensitivity: 93 dB

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List price $498.69
-7% $464.94

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• 330 watts Peak Each, 110 watts RMS Each
• 3/4" Aluminum Dome Tweeters
• Glass Fiber cone material
• Impedance: 3 ohm
• Sensitivity: 93 dB

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

500W Peak (250W RMS) 6.5” PRO-X Series 4-ohm Mid-Range Loudspeaker + NVX SDBSK2 Premium Sound Damping

PROX64BM_SDBSK2 big
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DS18 PRO-X6.4BM (Sold Individually) with Sound Damping

500W Peak (250W RMS) 6.5” PRO-X Series 4-ohm Mid-Range Loudspeaker + NVX SDBSK2 Premium Sound Damping

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

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49
List price $71.69
-12% $63.44

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

DS18 PRO-ZXI6.4BM (Sold Individually) with Sound Damping

600W Peak (300W RMS) 6.5" ZXi Series 4-Ohm Midrange Bullet Loudspeaker + NVX SDBSK2 Premium Sound Damping

PROZXI64BM_SDBSK2 big
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DS18 PRO-ZXI6.4BM (Sold Individually) with Sound Damping

600W Peak (300W RMS) 6.5" ZXi Series 4-Ohm Midrange Bullet Loudspeaker + NVX SDBSK2 Premium Sound Damping

• 600 watts Peak, 300 watts RMS
• 1" Aluminum Bullet Tweeter
• Paper cone material
• Impedance: 4 ohm
• Sensitivity: 97 dB

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List price $99.69
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• 600 watts Peak, 300 watts RMS
• 1" Aluminum Bullet Tweeter
• Paper cone material
• Impedance: 4 ohm
• Sensitivity: 97 dB

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    • Owner's manual
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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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