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Hertz K 130

440W Peak (110W RMS) 5.25” Uno Series 2-way 4-ohm Component Speakers

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440W Peak (110W RMS) 5.25” Uno Series 2-way 4-ohm Component Speakers

• 220 watts Peak Each, 55 watts RMS Each
• Tweeter-integrated crossover with 6dB/octave output
• 1" PEI (Polyetherimide) Dome tweeters with neodymium magnets
• Water-repellent Pressed Paper cone material
• Impedance: 4 ohm
• Sensitivity: 93 dB

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found car based on your search
Fits the following location in your 928
  • Rear Seat Side Panel
1
List price $150.00
-33% $99.99 /set

In stock

Hifonics HCC35CX

100W Peak (50W RMS) 3.5" Colossus Classic Series 2 Way Coaxial 4-ohm Speakers

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100W Peak (50W RMS) 3.5" Colossus Classic Series 2 Way Coaxial 4-ohm Speakers

• 50 watts Peak Each, 25 watts RMS Each
• 1" Aluminum Dome Tweeters
• Woven Fiber cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB

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Fits the following location in your 928
  • Front Door
$29.99 /pair

In stock

Limited time!

Hertz CX 130

300W Peak (100W RMS) 5.25" Cento Series 2-Way Coaxial 4-ohm Car Speakers

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300W Peak (100W RMS) 5.25" Cento Series 2-Way Coaxial 4-ohm Car Speakers

• 150 watts Peak Each, 50 watts RMS Each
• 0.9" Tetolon Dome tweeters
• Semi-Pressed paper with Mica cone material
• Impedance: 4 ohm
• Sensitivity: 92.5 dB

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found car based on your search
Fits the following location in your 928
  • Rear Seat Side Panel
List price $260.00
$249.99 /pair

In stock

Limited time!

Soundstream RS.42

160W Peak (80W RMS) 4" Reserve Series 2-way 4-ohm Coaxial Car Speakers

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160W Peak (80W RMS) 4" Reserve Series 2-way 4-ohm Coaxial Car Speakers

• 80 watts Peak Each, 40 watts RMS Each
• 3/4" Woven Poly-nylon Synthetic Hemispherical tweeters
• Natural Pulp Fiber Cone with Mica Crystalline Additive cone material
• Impedance: 4 ohm
• Sensitivity: 84.3 dB

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found car based on your search
Fits the following location in your 928
  • Side Panel
List price $43.99
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-32% $29.99 /pair

In stock

Only 1 Left!

Infinity REF-5030cx (REF5030CXAM)

390W Peak (130W RMS) 5.25” Reference Series 3 ohm Component Speaker System

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390W Peak (130W RMS) 5.25” Reference Series 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

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Install kits available for most vehicles

found car based on your search
Fits the following location in your 928
  • Rear Seat Side Panel
1
List price $249.95
-56% $109.95 /set

In stock

MTX TERMINATOR35

80W Peak (40W RMS) 3.5" Terminator Series 2 Way Coaxial 4-ohm Car Speakers

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80W Peak (40W RMS) 3.5" Terminator Series 2 Way Coaxial 4-ohm Car Speakers

• 40 watts Peak Each, 20 watts RMS Each
• Silk Dome tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 86 dB

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Install kits available for most vehicles

found car based on your search
Fits the following location in your 928
  • Rear Seat Side Panel
List price $59.95
-17% $49.95 /pair

In stock

Hifonics HCC4CX

150W Peak (80W RMS) 4" Colossus Classic Series 2 Way Coaxial 4-ohm Speakers

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150W Peak (80W RMS) 4" Colossus Classic Series 2 Way Coaxial 4-ohm Speakers

• 75 watts Peak Each, 40 watts RMS Each
• 1" Aluminum Dome Tweeters
• Woven Fiber cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB

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Install kits available for most vehicles

found car based on your search
Fits the following location in your 928
  • Side Panel
$39.99 /pair

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Available Offers (2) for Hifonics HCC4CX
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$39.99
$35.99 with coupon | Price details
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Hifonics HCC525CX

160W Peak (80W RMS) 5.25" Colossus Classic Series 2 Way Coaxial 4-ohm Speakers

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160W Peak (80W RMS) 5.25" Colossus Classic Series 2 Way Coaxial 4-ohm Speakers

• 80 watts Peak Each, 40 watts RMS Each
• 1" Aluminum Dome Tweeters
• Woven Fiber cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB

1+ offers available
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Install kits available for most vehicles

found car based on your search
Fits the following location in your 928
  • Rear Seat Side Panel
$49.99 /pair

In stock

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Available Offers (2) for Hifonics HCC525CX
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$49.99
$42.49 with coupon | Price details
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Rockford Fosgate P132 (Open Box, Great)

80W Peak (40W RMS) 3.5” Punch Series 2 Way Full Range Coaxial 4-ohm Speakers

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80W Peak (40W RMS) 3.5” Punch Series 2 Way Full Range Coaxial 4-ohm Speakers

• 40 watts Peak Each, 20 watts RMS Each
• 3/4" PEI (Polyetherimide) Dome tweeters
• Mineral-Filled Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 85 dB

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found car based on your search
Fits the following location in your 928
  • Front Door
43
List price $89.99
-15% $76.49 /pair

In stock

Cerwin-Vega H4C

300W Peak (100W RMS) 4" Vega Series 2 Way Component Speaker System

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300W Peak (100W RMS) 4" Vega Series 2 Way Component Speaker System

• 150 watts Peak Each, 50 watts RMS Each
• 1" PEI (Polyetherimide) Balanced Dome Tweeters
• Polypropylene cone material
• Powder-Coated, Rigid Stamped Steel Basket

1+ offers available
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found car based on your search
Fits the following location in your 928
  • Side Panel
List price $215.99
-17% $179.99 /set

In stock

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List price $215.99
-17% $179.99
$161.99 with coupon | Price details
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Alpine BRV-S40

240W Peak (80W RMS) 4" BassRev Series 4-ohm 2-Way Coaxial Speaker Set

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240W Peak (80W RMS) 4" BassRev Series 4-ohm 2-Way Coaxial Speaker Set

• 120 watts Peak Each, 40 watts RMS Each
• 1" Polyester cloth Dome Tweeters
• Polypropylene-Mica cone material
• BassRev tuning via Alpine OPTIM8
• Impedance: 4 ohm
• Sensitivity: 84 dB

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found car based on your search
Fits the following location in your 928
  • Side Panel
List price $300.00
Save $100.05
-33% $199.95 /pair

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Limited time!

Diamond Audio DES525

200W Peak (100W RMS) 5.25" Elite Series 2-way 4-ohm Coaxial Car Speakers

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200W Peak (100W RMS) 5.25" Elite Series 2-way 4-ohm Coaxial Car Speakers

• 100 watts Peak Each, 50 watts RMS Each
• 0.98" Aluminum Dome tweeters
• Composite Carbon Fiber cone material
• Impedance: 4 ohm
• Sensitivity: 85 dB

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Fits the following location in your 928
  • Rear Seat Side Panel
$199.99 /pair

In stock

Only 1 Left!

Lowest price in 30 days

JL Audio C2-525 (Open Box, Great)

200W Peak (120W RMS) 5.25” Evolution C2 Series 2-way 4-ohm Component Speaker System

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200W Peak (120W RMS) 5.25” Evolution C2 Series 2-way 4-ohm Component Speaker System

• 100 watts Peak Each, 60 watts RMS Each
• 3/4" Silk Dome tweeters with ferrofluid cooling and damping
• Mica Injected Polypropylene - MIPP cone material
• Impedance: 4 ohm
• Sensitivity: 89 dB

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found car based on your search
Fits the following location in your 928
  • Rear Seat Side Panel
9
List price $329.99
-34% $216.74 /set

In stock

Limited time!

JBL STAGE2524 (STAGE2 524)

420W Peak (70W RMS) 5.25" Stage2 Series 2 Way Coaxial 4-ohm Speakers

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420W Peak (70W RMS) 5.25" Stage2 Series 2 Way Coaxial 4-ohm Speakers

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

Free Speaker Accessory at Checkout!
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Install kits available for most vehicles

found car based on your search
Fits the following location in your 928
  • Rear Seat Side Panel
3
List price $89.99
-44% $49.95 /pair

Available

Ships in 10-14 days

Diamond Audio DMD35

80W Peak (40W RMS) 3.5” DMD Series Full-Range Car Speakers with Adaptor for BMW

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80W Peak (40W RMS) 3.5” DMD Series Full-Range Car Speakers with Adaptor for BMW

• 40 watts Peak Each, 20 watts RMS Each
• Includes square, triangle (BMW) and universal adaptors
• 0.79" Silk Dome tweeters
• Polypropylene cone material
• Sensitivity: 84 dB

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found car based on your search
Fits the following location in your 928
  • Front Door
$109.99 /pair

Available

Ships in 10-14 days

DS18 ZXI-354

240W Peak (80W RMS) 3.5” ZXI Series 4-ohm Full-Range Car Speakers

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240W Peak (80W RMS) 3.5” ZXI Series 4-ohm Full-Range Car Speakers

• 120 watts Peak Each, 40 watts RMS Each
• Glass Fiber cone material
• Impedance: 4 ohm
• Sensitivity: 86 dB

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Install kits available for most vehicles

found car based on your search
Fits the following location in your 928
  • Front Door
3
$59.95 /pair

In stock.

Used from: $35.97
Limited time!

Alpine S2-S40C

280W Peak (90W RMS) 4" S-Series Hi-Res 2-Way Component Car Speakers

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280W Peak (90W RMS) 4" S-Series Hi-Res 2-Way Component Car Speakers

• 140 watts Peak Each, 45 watts RMS Each
• Hi-Res Audio Certified
• 1" Cloth Dome Tweeters
• Adjustable tweeters with threaded removable housing
• Polypropylene, Glass Fiber and Mica cone material
• Impedance: 4 ohm
• Sensitivity: 86 dB

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found car based on your search
Fits the following location in your 928
  • Side Panel
1
List price $180.00
-17% $149.95 /set

In stock

DS18 ZXI-44

300W Peak (100W RMS) 4" ZXI Series 2-way 4-ohm Coaxial Car Speakers

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300W Peak (100W RMS) 4" ZXI Series 2-way 4-ohm Coaxial Car Speakers

• 150 watts Peak Each, 50 watts RMS Each
• 1" PEI (Polyetherimide) Dome tweeters
• Glass Fiber cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB

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Fits the following location in your 928
  • Side Panel
$80.95 /pair

In stock

Only 1 Left!

DS18 PRO-CUPOLA2 (Sold Individually)

300W Peak (100W RMS) 4" Pro Audio Soft Dome Midrange 4-ohm Loudspeaker

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300W Peak (100W RMS) 4" Pro Audio Soft Dome Midrange 4-ohm Loudspeaker

• 300 watts Peak, 100 watts RMS
• Coated non-resonant soft dome material
• Ultra-high sound quality
• Perfect for studio monitors or Hi-Fi applications
• Impedance: 4 ohm
• Sensitivity: 95 dB

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Fits the following location in your 928
  • Side Panel
List price $119.99
-17% $99.95

In stock.

Alpine S2-S40C with Installation Accessories

280W Peak (90W RMS) 4" Next-Generation S-Series 2-way Component Speaker System + 4" Speaker Baffles + Sound Damping, Roller and Panel Removal Kit

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280W Peak (90W RMS) 4" Next-Generation S-Series 2-way Component Speaker System + 4" Speaker Baffles + Sound Damping, Roller and Panel Removal Kit

• 140 watts Peak Each, 45 watts RMS Each
• 1" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB

Save 15% Off Package Deals at Checkout!
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224
List price $251.71
-26% $187.01

In stock

• 140 watts Peak Each, 45 watts RMS Each
• 1" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB

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    FAQ for Speakers in 1979 928

    Q: Can I upgrade or change the Speakers in 1979 Porsche 928?

    A: Yes this page includes all the best Speakers that work in your 928.

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    Modern vehicles often require specific brackets, wiring harnesses, and mounting solutions. A fit guide ensures:

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    Whether you're replacing a factory stereo or upgrading your entire audio system, the Fit Finder eliminates uncertainty.