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1999 Porsche 911

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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 Independance Day Sale

Speakers & Speaker Installation for 1999 Porsche 911

Find speakers to upgrade your sound and fit in the factory speaker location for your 911.  After you choose your speakers, we'll help you find speaker adapters, speaker harnesses and other accessories for installation.

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Shop All Speaker Locations in the Vehicle

See all speakers that fit, regardless of location.

Front Door Panel Speakers

Front Door Speakers

Speakers for your front door panels

Rear Door Panel Speakers

Rear Door Panel Speakers

Speakers for your rear door panels

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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.
Series
Many brands group their products into series or lines of products to help customers know the level of quality (good, better, best for example). You can filter by series and the brand using our guided browsing.
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NVX NSP525 with Speaker Installation Kit

240W Peak (160W RMS) 5.25" N-Series 2-Way Coaxial Car Speakers with Speaker Baffles, Panel Removal Kit, Sound Dampening and Heavy Duty Roller

NSP525, XBAF525, SDSK2, SDRLR1, BTK106 big
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NVX NSP525 with Speaker Installation Kit

240W Peak (160W RMS) 5.25" N-Series 2-Way Coaxial Car Speakers with Speaker Baffles, Panel Removal Kit, Sound Dampening and Heavy Duty Roller

• 240 watts Peak Each, 80 watts RMS Each
• 3/4" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 85 dB
• Mounting Depth: 1.96"

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found car based on your search
Fits multiple locations in your 911
  • Front Door
  • Rear Door
176
List price $138.70
-31% $95.09 /pair

In stock

Add to Cart

• 240 watts Peak Each, 80 watts RMS Each
• 3/4" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 85 dB
• Mounting Depth: 1.96"

Cerwin Vega XED52 with Speaker Installation Kit

60W RMS 5.25" Coaxial 2-Way Speakers + 5.25” Speaker Baffles + Sound Dampening, Roller and Panel Removal Kit

XED52_ACC_KIT big
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Cerwin Vega XED52 with Speaker Installation Kit

60W RMS 5.25" Coaxial 2-Way Speakers + 5.25” Speaker Baffles + Sound Dampening, Roller and Panel Removal Kit

• 275 watts Peak Each, 30 watts RMS Each
• 1" Metallic Balanced Dome Tweeters
• Curvilinear polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 94 dB

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Save $8 on install kits for this speaker

found car based on your search
Fits multiple locations in your 911
  • Front Door
  • Rear Door
156
List price $126.70
-33% $85.02 /pair

In stock

Add to Cart

• 275 watts Peak Each, 30 watts RMS Each
• 1" Metallic Balanced Dome Tweeters
• Curvilinear polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 94 dB

Cerwin-Vega XED525C with Speaker Installation Kit

60W RMS 5.25” 2-Way Component Speakers + 5.25” Speaker Baffles + Sound Dampening, Roller and Panel Removal Kit

XED525C_ACC_KIT big
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Cerwin-Vega XED525C with Speaker Installation Kit

60W RMS 5.25” 2-Way Component Speakers + 5.25” Speaker Baffles + Sound Dampening, Roller and Panel Removal Kit

• 300 watts Peak Each, 30 watts RMS Each
• 1" Metallic Balanced Dome Tweeters
• Curvilinear polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 94 dB

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Save $8 on install kits for this speaker

found car based on your search
Fits multiple locations in your 911
  • Front Door
  • Rear Door
157
List price $144.70
-31% $100.02 /set

In stock

Add to Cart

• 300 watts Peak Each, 30 watts RMS Each
• 1" Metallic Balanced Dome Tweeters
• Curvilinear polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 94 dB

Diamond Audio MP525 with Speaker Installation Accessories

300W Max (150W RMS) 5.25" PRO Full-Range Coaxial Horn Driver Speakers

MP525, XBAF525, SDSK2, SDRLR1, BTK106 big
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Diamond Audio MP525 with Speaker Installation Accessories

300W Max (150W RMS) 5.25" PRO Full-Range Coaxial Horn Driver Speakers

• 150 watts Max Each, 75 watts RMS Each
• 1" Aluminum Horn Tweeters
• Sensitivity: 101 dB
• Mounting Depth: 2.99"

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Save $8 on install kits for this speaker

found car based on your search
Fits multiple locations in your 911
  • Front Door
  • Rear Door
151
List price $512.70
-6% $479.85 /pair

In stock

Only 2 Left!

Add to Cart

• 150 watts Max Each, 75 watts RMS Each
• 1" Aluminum Horn Tweeters
• Sensitivity: 101 dB
• Mounting Depth: 2.99"

Pioneer TS-G1320S with Installation Accessories

70W RMS 5.25" G-Series 2-Way Coaxial Speakers with Speaker Baffles, Sound Damping, Roller, and Panel Removal Kit

TS-G1320S, XBAF525, SDSK2, SDRLR1, BTK106 big
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Pioneer TS-G1320S with Installation Accessories

70W RMS 5.25" G-Series 2-Way Coaxial Speakers with Speaker Baffles, Sound Damping, Roller, and Panel Removal Kit

• 250W Max Each, 70W RMS Each
• 1-3/16 Balanced Dome Tweeter
• Injection Molded Polypropylene with Mica Cone
• 4 ohm Impedance
• Sensitivity: 88dB
• Mounting Depth: 1-3/4"

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Save $8 on install kits for this speaker

found car based on your search
Fits multiple locations in your 911
  • Front Door
  • Rear Door
183
List price $137.71
-38% $85.02 /pair

In stock

Add to Cart

• 250W Max Each, 70W RMS Each
• 1-3/16 Balanced Dome Tweeter
• Injection Molded Polypropylene with Mica Cone
• 4 ohm Impedance
• Sensitivity: 88dB
• Mounting Depth: 1-3/4"

Cerwin Vega XED52 with Sound Damping

550W Peak (60W RMS) 5.25" XED Series 2-Way Coaxial Car Speakers + NVX SDSK2 Sound Damping

XED52_SDSK2 big
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Cerwin Vega XED52 with Sound Damping

550W Peak (60W RMS) 5.25" XED Series 2-Way Coaxial Car Speakers + NVX SDSK2 Sound Damping

• 275 watts Peak Each, 30 watts RMS Each
• 1" Metallic Balanced Dome Tweeters
• Curvilinear polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 94 dB

shipping truck icon Free shipping in USA. Provide zip for delivery date.
found car based on your search
Fits your 911
55
List price $72.73
-18% $59.98

In stock

Add to Cart

• 275 watts Peak Each, 30 watts RMS Each
• 1" Metallic Balanced Dome Tweeters
• Curvilinear polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 94 dB

Cerwin Vega XED525C with Sound Damping

600W Peak (60W RMS) 5.25” XED Series 2-Way Component Speakers + NVX SDSK2 Sound Damping

XED525C_SDSK2 big
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Cerwin Vega XED525C with Sound Damping

600W Peak (60W RMS) 5.25” XED Series 2-Way Component Speakers + NVX SDSK2 Sound Damping

• 300 watts Peak Each, 30 watts RMS Each
• 1" Metallic Balanced Dome Tweeters
• Curvilinear polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 94 dB

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shipping truck icon Free shipping in USA. Provide zip for delivery date.
found car based on your search
Fits your 911
56
List price $90.73
-17% $74.98

In stock

Add to Cart

• 300 watts Peak Each, 30 watts RMS Each
• 1" Metallic Balanced Dome Tweeters
• Curvilinear polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 94 dB

Diamond Audio MP525 with Sound Damping

300W Max (150W RMS) 5.25" PRO Full-Range Coaxial Horn Driver Speakers + NVX SDSK2 Sound Damping

MP525_SDSK2 big
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Diamond Audio MP525 with Sound Damping

300W Max (150W RMS) 5.25" PRO Full-Range Coaxial Horn Driver Speakers + NVX SDSK2 Sound Damping

• 150 watts Max Each, 75 watts RMS Each
• 1" Aluminum Horn Tweeters
• Sensitivity: 101 dB
• Mounting Depth: 2.99"

Save 15% Off Package Deals at Checkout!
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found car based on your search
Fits your 911
50
List price $458.73
$454.98

In stock

Only 2 Left!

Add to Cart

• 150 watts Max Each, 75 watts RMS Each
• 1" Aluminum Horn Tweeters
• Sensitivity: 101 dB
• Mounting Depth: 2.99"

Infinity Primus PR5012IS (PR5012ISAM) with Sound Damping

240W Peak (80W RMS) 5.25" Primus Series 2-Way Coaxial Car Speakers + NVX SDSK2 Sound Damping

PR5012ISAM_SDSK2 big
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Infinity Primus PR5012IS (PR5012ISAM) with Sound Damping

240W Peak (80W RMS) 5.25" Primus Series 2-Way Coaxial Car Speakers + NVX SDSK2 Sound Damping

• 120 watts Peak Each, 40 watts RMS Each
• Textile Edge-driven Dome Tweeters
• Polypropylene cone material
• Impedance: 2.7
• Sensitivity: 88 dB

shipping truck icon Free shipping in USA. Provide zip for delivery date.
found car based on your search
Fits your 911
48
List price $138.69
-50% $69.94

In stock

Add to Cart

• 120 watts Peak Each, 40 watts RMS Each
• Textile Edge-driven Dome Tweeters
• Polypropylene cone material
• Impedance: 2.7
• Sensitivity: 88 dB

Infinity Reference 5032cfx (REF-5032cfx) with Sound Damping

270W Max (90W RMS) 5.25" Reference 2-Way Coaxial Car Speakers + NVX SDSK2 Sound Damping

REF5032CFXAM_SDSK2 big
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Infinity Reference 5032cfx (REF-5032cfx) with Sound Damping

270W Max (90W RMS) 5.25" Reference 2-Way Coaxial Car Speakers + NVX SDSK2 Sound Damping

• 135 Watts Max Each, 45 Watts RMS Each
• Edge-Driven Textile Tweeter
• Plus One Polypropylene Oversized Cone
• 3 ohm Impedance
• Sensitivity: 92dB
• Mounting Depth: 1-15/16"

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found car based on your search
Fits your 911
48
List price $148.74
-40% $89.98

In stock

Add to Cart

• 135 Watts Max Each, 45 Watts RMS Each
• Edge-Driven Textile Tweeter
• Plus One Polypropylene Oversized Cone
• 3 ohm Impedance
• Sensitivity: 92dB
• Mounting Depth: 1-15/16"

Infinity Primus 503F with Sound Damping

480W Peak (160W RMS) Primus Series 5.25” 2-Way Coaxial Car Speakers + NVX SDSK2 Sound Damping

PR503F_SDSK2 big
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Infinity Primus 503F with Sound Damping

480W Peak (160W RMS) Primus Series 5.25” 2-Way Coaxial Car Speakers + NVX SDSK2 Sound Damping

• 120 watts Peak Each, 40 watts RMS Each
• 3/4" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 3 ohm
• Sensitivity: 91 dB

Save 15% Off Package Deals at Checkout!
shipping truck icon Free shipping in USA. Provide zip for delivery date.
found car based on your search
Fits your 911
48
List price $118.69
-28% $84.94

In stock

Only 3 Left!

Add to Cart

• 120 watts Peak Each, 40 watts RMS Each
• 3/4" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 3 ohm
• Sensitivity: 91 dB

Infinity Primus PR5012IS (PR5012ISAM) with Installation Accessories

240W Peak (80W RMS) 5.25" Primus Series 2-Way Coaxial Car Speakers + 5.25" Speaker Baffles + Sound Damping, Roller and Panel Removal Kit

PR5012ISAM_ACC_KIT big
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Infinity Primus PR5012IS (PR5012ISAM) with Installation Accessories

240W Peak (80W RMS) 5.25" Primus Series 2-Way Coaxial Car Speakers + 5.25" Speaker Baffles + Sound Damping, Roller and Panel Removal Kit

• 120 watts Peak Each, 40 watts RMS Each
• Textile Edge-driven Dome Tweeters
• Polypropylene cone material
• Impedance: 2.7
• Sensitivity: 88 dB

shipping truck icon Free shipping in USA. Provide zip for delivery date.
found car based on your search
Fits your 911
223
List price $192.66
-53% $91.31

In stock

Add to Cart

• 120 watts Peak Each, 40 watts RMS Each
• Textile Edge-driven Dome Tweeters
• Polypropylene cone material
• Impedance: 2.7
• Sensitivity: 88 dB

JBL STAGE151F (JBLSPKS151F) with Sound Damping

300W Peak (60W) RMS 5.25" Stage Series 2-way 4-ohm Coaxial Car Speakers + NVX SDBSK2 Premium Sound Damping

STAGE151F_SDBSK2 big
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JBL STAGE151F (JBLSPKS151F) with Sound Damping

300W Peak (60W) RMS 5.25" Stage Series 2-way 4-ohm Coaxial Car Speakers + NVX SDBSK2 Premium Sound Damping

• 150 watts Peak Each, 30 watts RMS Each
• Swayed Mylar Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 90 dB

Save 15% Off Package Deals at Checkout!
shipping truck icon Free shipping in USA. Provide zip for delivery date.
found car based on your search
Fits your 911
48
List price $98.73
-34% $64.98

In stock

Add to Cart

• 150 watts Peak Each, 30 watts RMS Each
• Swayed Mylar Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 90 dB

JBL Stage3 527 (STAGE3527AM) with Sound Damping

400W Peak (80W RMS) 5.25” Stage3 Series 2-way 3-ohm Coaxial Car Speakers + NVX SDBSK2 Premium Sound Damping

STAGE3527AM_SDBSK2 big
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JBL Stage3 527 (STAGE3527AM) with Sound Damping

400W Peak (80W RMS) 5.25” Stage3 Series 2-way 3-ohm Coaxial Car Speakers + NVX SDBSK2 Premium Sound Damping

• 200 watts Peak Each, 40 watts RMS Each
• Polypropylene cone material with Plus One woofer architecture
• Impedance: 3 ohm
• Sensitivity: 91 dB

Save 15% Off Package Deals at Checkout!
shipping truck icon Free shipping in USA. Provide zip for delivery date.
found car based on your search
Fits your 911
50
List price $128.69
-34% $84.94

In stock

Add to Cart

• 200 watts Peak Each, 40 watts RMS Each
• Polypropylene cone material with Plus One woofer architecture
• Impedance: 3 ohm
• Sensitivity: 91 dB

Kenwood KFC-1366S with Sound Damping

520W Peak (60W RMS) 5.25" Sport Series 2-way 4-ohm Coaxial Car Speakers + NVX SDBSK2 Premium Sound Damping

KFC1366S_SDBSK2 big
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Kenwood KFC-1366S with Sound Damping

520W Peak (60W RMS) 5.25" Sport Series 2-way 4-ohm Coaxial Car Speakers + NVX SDBSK2 Premium Sound Damping

• 260 watts Peak Each, 30 watts RMS Each
• 1" PEI (Polyetherimide) Balanced Dome tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 89 dB

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found car based on your search
Fits your 911
51
List price $98.74
-40% $59.49

In stock

Add to Cart

• 260 watts Peak Each, 30 watts RMS Each
• 1" PEI (Polyetherimide) Balanced Dome tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 89 dB

DS18 G5.25Xi with Sound Damping

270W Peak (90W RMS) 5.25" GEN-X Series 2-way 4-ohm Coaxial Speakers + NVX SDBSK2 Premium Sound Damping

G525XI_SDBSK2 big
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DS18 G5.25Xi with Sound Damping

270W Peak (90W RMS) 5.25" GEN-X Series 2-way 4-ohm Coaxial Speakers + NVX SDBSK2 Premium Sound Damping

• 135 watts Peak Each, 45 watts RMS Each
• 1" Mylar Balanced Dome tweeters with neodynium magnets
• Paper cone material
• Impedance: 4 ohm
• Sensitivity: 84 dB

shipping truck icon Free shipping in USA. Provide zip for delivery date.
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Fits your 911
48
List price $69.69
-12% $61.44

In stock

Add to Cart

• 135 watts Peak Each, 45 watts RMS Each
• 1" Mylar Balanced Dome tweeters with neodynium magnets
• Paper cone material
• Impedance: 4 ohm
• Sensitivity: 84 dB

Rockford Fosgate Prime R1525X2 with Sound Damping

160W Peak (80W RMS) 5.25" PRIME Series 2-way 4-ohm Coaxial Car Speakers + NVX SDBSK2 Premium Sound Damping

R1525X2_SDBSK2 big
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Rockford Fosgate Prime R1525X2 with Sound Damping

160W Peak (80W RMS) 5.25" PRIME Series 2-way 4-ohm Coaxial Car Speakers + NVX SDBSK2 Premium Sound Damping

• 80 watts Peak Each, 40 watts RMS Each
• 1/2" Silk Flush-mounted Dome tweeters
• Vacuum Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB

Save 15% Off Package Deals at Checkout!
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found car based on your search
Fits your 911
65
List price $98.73
$94.98

In stock

Add to Cart

• 80 watts Peak Each, 40 watts RMS Each
• 1/2" Silk Flush-mounted Dome tweeters
• Vacuum Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB

DS18 PRO-X5.4M (Pair)

600W Peak (300W RMS) 5.25” PRO-X Series Midrange Loudspeakers (Pair)

PROX54M_2 big
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DS18 PRO-X5.4M (Pair)

600W Peak (300W RMS) 5.25” PRO-X Series Midrange Loudspeakers (Pair)

• 300 watts Peak Each, 150 watts RMS Each
• Red Steel Basket
• Paper cone material
• Impedance: 4 ohm
• Sensitivity: 93 dB

shipping truck icon Free shipping in USA. Provide zip for delivery date.
found car based on your search
Fits your 911
1
List price $89.90
$87.20

In stock.

Add to Cart

• 300 watts Peak Each, 150 watts RMS Each
• Red Steel Basket
• Paper cone material
• Impedance: 4 ohm
• Sensitivity: 93 dB

JBL STAGE2 524 (STAGE2524) (2-Pairs, 4-Total)

840W Peak (140W RMS) 5.25" Stage2 Series 2-way Coaxial Car Speakers (2-Pairs)

STAGE2524_2 big
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JBL STAGE2 524 (STAGE2524) (2-Pairs, 4-Total)

840W Peak (140W RMS) 5.25" Stage2 Series 2-way Coaxial Car Speakers (2-Pairs)

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

Save 15% Off Package Deals at Checkout!
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3
List price $179.98
-44% $99.90

Available

Ships in 10-14 days

Add to Cart

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

DS18 PRO-X5M (Pair)

600W Peak (300W RMS) 5.25” PRO-X Series Midrange Loudspeakers (Pair)

PROX5M_2 big
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DS18 PRO-X5M (Pair)

600W Peak (300W RMS) 5.25” PRO-X Series Midrange Loudspeakers (Pair)

• 300 watts Peak Each, 150 watts RMS Each
• Red Steel Basket
• Paper cone material
• Impedance: 8 ohm
• Sensitivity: 90 dB

shipping truck icon Free shipping in USA. Provide zip for delivery date.
found car based on your search
Fits your 911
List price $89.90
$87.20

In stock.

Add to Cart

• 300 watts Peak Each, 150 watts RMS Each
• Red Steel Basket
• Paper cone material
• Impedance: 8 ohm
• Sensitivity: 90 dB

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    Q: Can I upgrade or change the Speakers in 1999 Porsche 911?

    A: Yes this page includes all the best Speakers that work in your 911.

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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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