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1978 BMW 633CSi

Speakers & Speaker Installation for 1978 BMW 633CSi

Find speakers to upgrade your sound and fit in the factory speaker location for your 633CSi.  After you choose your speakers, we'll help you find speaker adapters, speaker harnesses and other accessories for installation.

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Cerwin Vega H746 with Sound Damping

550W Max (60W RMS) 4x6" HED Series 2-way Coaxial Car speakers + NVX SDSK2 Sound Damping

H746_SDSK2 big
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550W Max (60W RMS) 4x6" HED Series 2-way Coaxial Car speakers + NVX SDSK2 Sound Damping

• 275 watts Peak Each, 30 watts RMS Each
• 1" PEI (Polyetherimide) Balanced Dome Tweeters
• Graphite-injected reinforced spun cone material
• Impedance: 4 ohm
• Sensitivity: 86 dB

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found car based on your search
Fits your 633CSi
55
List price $78.73
-5% $74.98

In stock

• 275 watts Peak Each, 30 watts RMS Each
• 1" PEI (Polyetherimide) Balanced Dome Tweeters
• Graphite-injected reinforced spun cone material
• Impedance: 4 ohm
• Sensitivity: 86 dB

Lowest price in 30 days

Infinity Kappa 463XF with Sound Damping

360W Peak (120W RMS) 4x6" Kappa Series 2-way Coaxial Car Speakers + NVX SDSK2 Sound Damping

KAPPA463XF_SDSK2 big
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360W Peak (120W RMS) 4x6" Kappa Series 2-way Coaxial Car Speakers + NVX SDSK2 Sound Damping

• 180 watts Peak Each, 60 watts RMS Each
• 1" Silk Edge-driven Dome Tweeters
• Glass Fiber cone material
• Impedance: 3 ohm
• Sensitivity: 93 dB

Save 15% Off Package Deals at Checkout!
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found car based on your search
Fits your 633CSi
49
List price $288.69
-26% $214.94

Available

Ships in 10-14 days

• 180 watts Peak Each, 60 watts RMS Each
• 1" Silk Edge-driven Dome Tweeters
• Glass Fiber cone material
• Impedance: 3 ohm
• Sensitivity: 93 dB

MTX TERMINATOR46 (2-Pairs, 4-Total)

320W Peak (160W RMS) 4x6” Terminator Series 2-way Coaxial Speakers (2-Pairs)

TERMINATOR46_2 big
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320W Peak (160W RMS) 4x6” Terminator Series 2-way Coaxial Speakers (2-Pairs)

• 80 watts Peak Each, 40 watts RMS Each
• 1" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 86.1 dB

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found car based on your search
Fits your 633CSi
3
List price $129.90
-15% $109.90

In stock

Only 2 Left!

• 80 watts Peak Each, 40 watts RMS Each
• 1" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 86.1 dB

Rockford Fosgate Punch P1462 (2-Pairs, 4-Total)

280W Peak (140W RMS) 4x6” Punch Series 2-Way Coaxial Car Speakers (2-Pairs)

09-P1462_2 big
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280W Peak (140W RMS) 4x6” Punch Series 2-Way Coaxial Car Speakers (2-Pairs)

• 70 watts Peak Each, 35 watts RMS Each
• 3/4" PEI (Polyetherimide) Dome Tweeters
• Injection molded Mineral-Filled Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 87.5 dB

Save 15% Off Package Deals at Checkout!
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found car based on your search
Fits your 633CSi
37
$219.98

In stock

• 70 watts Peak Each, 35 watts RMS Each
• 3/4" PEI (Polyetherimide) Dome Tweeters
• Injection molded Mineral-Filled Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 87.5 dB

Rockford Fosgate Power T1462 + FREE $25 Gift Card

180W Peak (90W RMS) 4x6” Power Series 2-Way Coaxial Speakers

T1462, 25egift big
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180W Peak (90W RMS) 4x6” Power Series 2-Way Coaxial Speakers

• 90 watts Peak Each, 45 watts RMS Each
• 1" Aluminum Dome Tweeters
• Carbon Fiber cone material
• Impedance: 4 ohm
• Sensitivity: 85.5 dB

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Install kits available for most vehicles

found car based on your search
Fits the following location in your 633CSi
  • Car Speakers
20
List price $244.99
-10% $219.99 /pair

In stock

Only 3 Left!

• 90 watts Peak Each, 45 watts RMS Each
• 1" Aluminum Dome Tweeters
• Carbon Fiber cone material
• Impedance: 4 ohm
• Sensitivity: 85.5 dB

Rockford Fosgate Punch P142 + FREE $25 Gift Card

120W MAX (60W RMS) 4" Punch Series 2-Way Coaxial Car Speakers

P142, 25EGIFT big
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120W MAX (60W RMS) 4" Punch Series 2-Way Coaxial Car Speakers

• 60 watts Peak Each, 30 watts RMS Each
• 3/4" PEI (Polyetherimide) Dome Tweeters
• Mineral-Filled Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 86.5 dB

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Install kits available for most vehicles

found car based on your search
Fits the following location in your 633CSi
  • Car Speakers
15
List price $134.99
-19% $109.99 /pair

In stock

Only 1 Left!

• 60 watts Peak Each, 30 watts RMS Each
• 3/4" PEI (Polyetherimide) Dome Tweeters
• Mineral-Filled Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 86.5 dB

Rockford Fosgate Power T1462 with Sound Damping

180W Peak (90W RMS) 4x6” Power Series 2-way 4-ohm Coaxial Car Speakers + NVX SDBSK2 Premium Sound Damping

09-T1462_SDBSK2 big
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180W Peak (90W RMS) 4x6” Power Series 2-way 4-ohm Coaxial Car Speakers + NVX SDBSK2 Premium Sound Damping

• 90 watts Peak Each, 45 watts RMS Each
• 1" Aluminum Dome tweeters with polyurethane suspension
• Carbon Fiber & Polypropylene-injected cone material
• Impedance: 4 ohm
• Sensitivity: 85.5 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 633CSi
62
List price $238.73
-8% $219.99

In stock

Only 3 Left!

• 90 watts Peak Each, 45 watts RMS Each
• 1" Aluminum Dome tweeters with polyurethane suspension
• Carbon Fiber & Polypropylene-injected cone material
• Impedance: 4 ohm
• Sensitivity: 85.5 dB

Polk Audio DB462 Two Pack (DB 462)

2 Pair of 4x6" 2-Way DB+ (Plus) Series Coaxial Car Audio Speakers with Marine/ATV/UTV Certification

DB462 2 Pack big
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2 Pair of 4x6" 2-Way DB+ (Plus) Series Coaxial Car Audio Speakers with Marine/ATV/UTV Certification

• Two Pair (4 Speakers)
• 50 Watts Max Each, 150 Watts RMS Each
• 0.75" shallow tweeter design
• Polypropylene UV tolerant cone
• 4 Ohm Impedance
• Sensitivity: 90dB
• Mounting Depth: 1.81"
• IP65 rated

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found car based on your search
Fits your 633CSi
7
List price $199.98
-46% $108.00

In stock

Only 1 Left!

• Two Pair (4 Speakers)
• 50 Watts Max Each, 150 Watts RMS Each
• 0.75" shallow tweeter design
• Polypropylene UV tolerant cone
• 4 Ohm Impedance
• Sensitivity: 90dB
• Mounting Depth: 1.81"
• IP65 rated

Cerwin Vega H746 (2-Pairs, 4-Total)

1100W Max (120W RMS) 4x6" HED Series 2-way Coaxial Car speakers (2-Pairs)

H746_2 big
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1100W Max (120W RMS) 4x6" HED Series 2-way Coaxial Car speakers (2-Pairs)

• 275 watts Peak Each, 30 watts RMS Each
• 1" PEI (Polyetherimide) Balanced Dome Tweeters
• Graphite-injected reinforced spun cone material
• Impedance: 4 ohm
• Sensitivity: 86 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 633CSi
9
$119.98

In stock

• 275 watts Peak Each, 30 watts RMS Each
• 1" PEI (Polyetherimide) Balanced Dome Tweeters
• Graphite-injected reinforced spun cone material
• Impedance: 4 ohm
• Sensitivity: 86 dB

Rockford Fosgate Power T1462 (2-Pairs, 4-Total)

360W Peak (180W RMS) 4x6” Power Series 2-Way Coaxial Speakers (2-Pairs)

09-T1462_2 big
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360W Peak (180W RMS) 4x6” Power Series 2-Way Coaxial Speakers (2-Pairs)

• 90 watts Peak Each, 45 watts RMS Each
• 1" Aluminum Dome Tweeters
• Carbon Fiber cone material
• Impedance: 4 ohm
• Sensitivity: 85.5 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 633CSi
16
List price $439.98
-5% $419.98

In stock

Only 1 Left!

• 90 watts Peak Each, 45 watts RMS Each
• 1" Aluminum Dome Tweeters
• Carbon Fiber cone material
• Impedance: 4 ohm
• Sensitivity: 85.5 dB

Rockford Fosgate Punch P142 (Open Box, Great)

120W Peak (60W RMS) 4" Punch Series 2-way 4-ohm Coaxial Car Speakers

P142 big
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120W Peak (60W RMS) 4" Punch Series 2-way 4-ohm Coaxial Car Speakers

• 60 watts Peak Each, 30 watts RMS Each
• 3/4" PEI (Polyetherimide) Dome tweeters
• Injection-molded mineral-filled polypropylene cone material with VAST technology
• Impedance: 4 ohm
• Sensitivity: 86.5 dB

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Install kits available for most vehicles

found car based on your search
Fits the following location in your 633CSi
  • Car Speakers
11
List price $109.99
-15% $93.49 /pair

In stock

JBL Stage3 6427 with Installation Accesories

175W Peak (70W RMS) 4x6” 3-way Stage 3 Series Speakers + Speaker Baffles, Sound Damping, Roller, and Panel Removal Kit

Stage3 6427, FRING46, SDSK2, SDRLR2, BTK106 big
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175W Peak (70W RMS) 4x6” 3-way Stage 3 Series Speakers + Speaker Baffles, Sound Damping, Roller, and Panel Removal Kit

• Pair of 4" x 6" Two-Way Coaxial Speakers
• RMS: 35 Watts / Peak: 175 Watts
• Impedance: 3 Ohm
• Edge-driven dome tweeter
• Vented basket Frame design
• Competitively Tuned

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Install kits available for most vehicles

found car based on your search
Fits the following location in your 633CSi
  • Car Speakers
111
List price $183.66
-31% $127.01 /pair

In stock

• Pair of 4" x 6" Two-Way Coaxial Speakers
• RMS: 35 Watts / Peak: 175 Watts
• Impedance: 3 Ohm
• Edge-driven dome tweeter
• Vented basket Frame design
• Competitively Tuned

Rockford Fosgate P1462 with Accessories

140W Peak (70W RMS) 4"x6” Punch Series 2-Way Coaxial Car Speakers

P1462, FRING46, SDSK2, SDRLR1, BTK106 big
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140W Peak (70W RMS) 4"x6” Punch Series 2-Way Coaxial Car Speakers

• 70 watts Peak Each, 35 watts RMS Each
• 3/4" PEI (Polyetherimide) Dome Tweeters
• Injection molded Mineral-Filled Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 87.5 dB

Save 15% Off Package Deals at Checkout!
shipping truck icon Free shipping in USA. Provide zip for delivery date.
install icon

Install kits available for most vehicles

found car based on your search
Fits the following location in your 633CSi
  • Car Speakers
176
List price $182.70
-20% $145.82 /pair

In stock

• 70 watts Peak Each, 35 watts RMS Each
• 3/4" PEI (Polyetherimide) Dome Tweeters
• Injection molded Mineral-Filled Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 87.5 dB

(4) Hifonics ZS46CX 4x6" 800 Watt Coaxial Car Audio Speakers

2 Pairs (4 Total) 400W Max (80W RMS) 4x6" Zeus Series 2-Way Coaxial Car Speakers Package

ZS46CX 2 Pack big
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2 Pairs (4 Total) 400W Max (80W RMS) 4x6" Zeus Series 2-Way Coaxial Car Speakers Package

• 200 Watts Max Each, 40 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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found car based on your search
Fits your 633CSi
23
List price $49.98
-24% $37.92

In stock

• 200 Watts Max Each, 40 Watts RMS Each
• 1" Neo-Mylar Soft Dome Tweeter
• Alpha-Cellulose mid-woofer cone material
• 4 Ohm Impedance
• Sensitivity: 88dB
• CEA-426B compliant speakers

Hertz DCX460.3 with Speaker Installation Accessories

40W RMS 4"x6” Dieci Series 2-way Coaxial Speaker with Speaker Baffles, Sound Damping, Roller, and Panel Removal Kit

DCX 460.3, FRING46, SDSK2, SDRLR1, BTK106 big
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40W RMS 4"x6” Dieci Series 2-way Coaxial Speaker with Speaker Baffles, Sound Damping, Roller, and Panel Removal Kit

• 80 Watts Max Each, 40 Watts RMS Each
• Water-repellent pressed paper Cone
• Woofer magnet: High density flux ferrite
• 4 Ohm Impedance
• Sensitivity: 93 dB
• Mounting Depth: 1-13/16"

Save 15% Off Package Deals at Checkout!
shipping truck icon Free shipping in USA. Provide zip for delivery date.
install icon

Install kits available for most vehicles

found car based on your search
Fits the following location in your 633CSi
  • Car Speakers
139
List price $222.71
-26% $165.82 /pair

In stock

• 80 Watts Max Each, 40 Watts RMS Each
• Water-repellent pressed paper Cone
• Woofer magnet: High density flux ferrite
• 4 Ohm Impedance
• Sensitivity: 93 dB
• Mounting Depth: 1-13/16"

Polk Audio DB462 with Installation Accessories

100W RMS 4"x6” 2-way Car & Marine Coaxial Speakers with Speaker Baffles, Sound Damping, Roller, and Panel Removal Kit

DB462, FRING46, SDSK2, SDRLR1, BTK106 big
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100W RMS 4"x6” 2-way Car & Marine Coaxial Speakers with Speaker Baffles, Sound Damping, Roller, and Panel Removal Kit

• 150 watts Peak Each, 50 watts RMS Each
• 3/4" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 90 dB

shipping truck icon Free shipping in USA. Provide zip for delivery date.
install icon

Install kits available for most vehicles

found car based on your search
Fits the following location in your 633CSi
  • Car Speakers
146
List price $172.70
-27% $125.83 /pair

In stock

Only 2 Left!

• 150 watts Peak Each, 50 watts RMS Each
• 3/4" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 90 dB

Hertz DCX460.3 (2-Pairs, 4-Total)

160W Peak (80W RMS) 4x6” Dieci Series 2-way Coaxial Car Speaker (2-Pairs)

DCX4603_2 big
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160W Peak (80W RMS) 4x6” Dieci Series 2-way Coaxial Car Speaker (2-Pairs)

• 80 Watts Max Each, 40 Watts RMS Each
• Water-repellent pressed paper Cone
• Woofer magnet: High density flux ferrite
• 4 Ohm Impedance
• Sensitivity: 93 dB
• Mounting Depth: 1-13/16"

Save 15% Off Package Deals at Checkout!
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found car based on your search
Fits your 633CSi
List price $300.00
-13% $259.98

In stock

Only 2 Left!

• 80 Watts Max Each, 40 Watts RMS Each
• Water-repellent pressed paper Cone
• Woofer magnet: High density flux ferrite
• 4 Ohm Impedance
• Sensitivity: 93 dB
• Mounting Depth: 1-13/16"

Hertz DCX460.3 with Sound Damping

80W Peak (40W RMS) 4x6” Dieci Series 2-way Coaxial Car Speaker + NVX SDSK2 Sound Damping

DCX4603_SDSK2 big
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80W Peak (40W RMS) 4x6” Dieci Series 2-way Coaxial Car Speaker + NVX SDSK2 Sound Damping

• 80 Watts Max Each, 40 Watts RMS Each
• Water-repellent pressed paper Cone
• Woofer magnet: High density flux ferrite
• 4 Ohm Impedance
• Sensitivity: 93 dB
• Mounting Depth: 1-13/16"

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 633CSi
46
List price $168.74
-14% $144.98

In stock

• 80 Watts Max Each, 40 Watts RMS Each
• Water-repellent pressed paper Cone
• Woofer magnet: High density flux ferrite
• 4 Ohm Impedance
• Sensitivity: 93 dB
• Mounting Depth: 1-13/16"

Infinity REF467F with Installation Accessories

270W Peak (90W RMS) 4x6" Reference Series 2-way 3-ohm Speakers + 4"x6" Speaker Baffles + Sound Damping, Roller and Panel Removal Kit

REF467F_ACC_KIT big
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270W Peak (90W RMS) 4x6" Reference Series 2-way 3-ohm Speakers + 4"x6" Speaker Baffles + Sound Damping, Roller and Panel Removal Kit

• 135 watts Peak Each, 45 watts RMS Each
• 1/2" Textile Balanced Dome Tweeters
• Polypropylene cone material
• Impedance: 3 ohm
• Sensitivity: 92 dB

Save 15% Off Package Deals at Checkout!
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found car based on your search
Fits your 633CSi
216
List price $212.66
-31% $146.31

In stock

• 135 watts Peak Each, 45 watts RMS Each
• 1/2" Textile Balanced Dome Tweeters
• Polypropylene cone material
• Impedance: 3 ohm
• Sensitivity: 92 dB

Rockford Fosgate P1462 4 x 6 Inch 140W 2-Way Full Range Car Speakers (12 Pack)

Rockford Fosgate P1462 4 x 6 Inch 140W 2-Way Full Range Car Speakers (12 Pack)

P1462 6 Pack big
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Rockford Fosgate P1462 4 x 6 Inch 140W 2-Way Full Range Car Speakers (12 Pack)

• Peak Power: 70W
• RMS Power: 35W
• Mineral-Filled and Polypropylene Injection Molded Cone
• Butyl Rubber Surround
• PEI Dome Tweeter
• ICC Crossover
• VAST Surround

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 633CSi
37
$659.94

In stock

• Peak Power: 70W
• RMS Power: 35W
• Mineral-Filled and Polypropylene Injection Molded Cone
• Butyl Rubber Surround
• PEI Dome Tweeter
• ICC Crossover
• VAST Surround

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    FAQ for Speakers in 1978 633CSi

    Q: Can I upgrade or change the Speakers in 1978 BMW 633CSi?

    A: Yes this page includes all the best Speakers that work in your 633CSi.

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