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1981 BMW 633CSi

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Overview 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 1981 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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See all speakers that fit, regardless of location.

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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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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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Cerwin Vega H746 with Sound Damping

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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55
List price $78.73
-5% $74.98

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• 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 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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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

• 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

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62
List price $238.73
-8% $219.99

In stock

Only 3 Left!

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• 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

JBL Stage3 6427 (STAGE36427AM) with Sound Damping

350W Peak (70W RMS) 4x6” Stage3 Series 2-way 3-ohm Coaxial Car Speakers + NVX SDBSK2 Premium Sound Damping

STAGE36427AM_SDBSK2 big
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JBL Stage3 6427 (STAGE36427AM) with Sound Damping

350W Peak (70W RMS) 4x6” Stage3 Series 2-way 3-ohm Coaxial Car Speakers + NVX SDBSK2 Premium Sound Damping

• 175 watts Peak Each, 35 watts RMS Each
• Edge-driven dome tweeters
• Polypropylene cone material with Plus One woofer cone architecture
• Impedance: 3 ohm
• Sensitivity: 91 dB

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47
List price $128.69
-18% $104.94

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• 175 watts Peak Each, 35 watts RMS Each
• Edge-driven dome tweeters
• Polypropylene cone material with Plus One woofer cone architecture
• Impedance: 3 ohm
• Sensitivity: 91 dB

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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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Infinity Kappa 463XF with Sound Damping

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

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49
List price $288.69
-26% $214.94

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Ships in 10-14 days

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

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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Hertz DCX460.3 with Sound Damping

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"

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46
List price $168.74
-14% $144.98

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• 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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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

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

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216
List price $212.66
-31% $146.31

In stock

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

Infinity REF467F with Sound Damping

270W Peak (90W RMS) 4x6" Reference Series 2-way 3-ohm Speakers + NVX SDSK2 Sound Damping

REF467F_SDSK2 big
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Infinity REF467F with Sound Damping

270W Peak (90W RMS) 4x6" Reference Series 2-way 3-ohm Speakers + NVX SDSK2 Sound Damping

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

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46
List price $158.69
-21% $124.94

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• 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 Punch P142 with Sound Damping

120W Peak (60W RMS) 4" Punch Series 2-way 4-ohm Coaxial Car Speakers + NVX SDBSK2 Premium Sound Damping

09-P142_SDBSK2 big
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Rockford Fosgate Punch P142 with Sound Damping

120W Peak (60W RMS) 4" Punch Series 2-way 4-ohm Coaxial Car Speakers + NVX SDBSK2 Premium Sound Damping

• 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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57
List price $128.73
$124.98

In stock

Only 1 Left!

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• 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

Rockford Fosgate Punch with Sound Damping

140W Peak (70W RMS) 4x6” Punch Series 2-way 4-ohm Coaxial Car Speakers + NVX SDBSK2 Premium Sound Damping

09-P1462_SDBSK2 big
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Rockford Fosgate Punch with Sound Damping

140W Peak (70W RMS) 4x6” Punch Series 2-way 4-ohm Coaxial Car Speakers + NVX SDBSK2 Premium Sound Damping

• 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: 90 dB

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83
List price $128.73
$124.98

In stock

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• 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: 90 dB

Hifonics ZS46CX with Sound Damping

400W Peak (80W RMS) Zeus Series 4x6" Zeus Series 2-Way Coaxial Car Speakers + NVX SDSK2 Sound Damping

ZS46CX_SDSK2 big
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Hifonics ZS46CX with Sound Damping

400W Peak (80W RMS) Zeus Series 4x6" Zeus Series 2-Way Coaxial Car Speakers + NVX SDSK2 Sound Damping

• 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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69
List price $43.73
-18% $35.99

In stock

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• 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

Hifonics ZS46CX with Installation Accessories

400W Peak (80W RMS) Zeus Series 4x6" Zeus Series 2-Way Coaxial Car Speakers + 4"x6" Speaker Baffles + Sound Damping, Roller and Panel Removal Kit

ZS46CX_ACC_KIT big
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Hifonics ZS46CX with Installation Accessories

400W Peak (80W RMS) Zeus Series 4x6" Zeus Series 2-Way Coaxial Car Speakers + 4"x6" Speaker Baffles + Sound Damping, Roller and Panel Removal Kit

• 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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Fits your 633CSi
239
List price $97.70
-41% $57.36

In stock

Add to Cart

• 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

Kenwood KFC-4675C with Sound Damping

60W Peak (20W RMS) 4x6” 2-way 4-ohm Coaxial Car Speakers + NVX SDBSK2 Premium Sound Damping

KFC4675C_SDBSK2 big
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Kenwood KFC-4675C with Sound Damping

60W Peak (20W RMS) 4x6” 2-way 4-ohm Coaxial Car Speakers + NVX SDBSK2 Premium Sound Damping

• 60 watts Peak Each, 20 watts RMS Each
• 1" PEI (Polyetherimide) Balanced Dome tweeters
• Injection Molded Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 90 dB

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62
List price $146.74
-40% $87.49

In stock

Add to Cart

• 60 watts Peak Each, 20 watts RMS Each
• 1" PEI (Polyetherimide) Balanced Dome tweeters
• Injection Molded Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 90 dB

MTX TERMINATOR46 with Sound Damping

160W Peak (80W RMS) 4x6” Terminator Series 2-way 4-ohm Coaxial Car Speakers + NVX SDBSK2 Premium Sound Damping

TERMINATOR46_SDBSK2 big
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MTX TERMINATOR46 with Sound Damping

160W Peak (80W RMS) 4x6” Terminator Series 2-way 4-ohm Coaxial Car Speakers + NVX SDBSK2 Premium Sound Damping

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

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49
List price $83.69
-16% $69.94

In stock

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

Pioneer TS-G4620S with Sound Damping

400W Max (60W RMS) 4x6" G-Series 2-way 4-ohm Coaxial Car Speakers + NVX SDBSK2 Premium Sound Damping

TSG4620S_SDBSK2 big
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Pioneer TS-G4620S with Sound Damping

400W Max (60W RMS) 4x6" G-Series 2-way 4-ohm Coaxial Car Speakers + NVX SDBSK2 Premium Sound Damping

• 200 watts Peak Each, 30 watts RMS Each
• 1-3/16" Polyethylene Terephthalate (PET) Balanced Dome tweeters
• Injection-molded Polypropylene with MICA cone material
• Impedance: 4 ohm
• Sensitivity: 89 dB

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52
List price $83.74
-36% $53.18

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• 200 watts Peak Each, 30 watts RMS Each
• 1-3/16" Polyethylene Terephthalate (PET) Balanced Dome tweeters
• Injection-molded Polypropylene with MICA cone material
• Impedance: 4 ohm
• Sensitivity: 89 dB

Kenwood eXcelon KFC-X463C with Sound Damping

200W Peak (60W RMS) 4x6" 2-way 3-ohm Coaxial Car Speakers + NVX SDBSK2 Premium Sound Damping

KFCX463C_SDBSK2 big
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Kenwood eXcelon KFC-X463C with Sound Damping

200W Peak (60W RMS) 4x6" 2-way 3-ohm Coaxial Car Speakers + NVX SDBSK2 Premium Sound Damping

• 100 watts Peak Each, 30 watts RMS Each
• 1" PEI (Polyetherimide) Balanced Dome tweeters
• Carbon-Polypropylene Hybrid cone material with diamond array pattern
• Impedance: 3 ohm
• Sensitivity: 86 dB

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50
List price $138.74
-6% $130.48

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Ships in 10-14 days

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• 100 watts Peak Each, 30 watts RMS Each
• 1" PEI (Polyetherimide) Balanced Dome tweeters
• Carbon-Polypropylene Hybrid cone material with diamond array pattern
• Impedance: 3 ohm
• Sensitivity: 86 dB

MTX Audio THUNDER46 with Sound Damping

160W Peak (80W RMS) 4x6" Thunder Dome Series 2-way 4-ohm Coaxial Speakers + NVX SDBSK2 Premium Sound Damping

THUNDER46_SDBSK2 big
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MTX Audio THUNDER46 with Sound Damping

160W Peak (80W RMS) 4x6" Thunder Dome Series 2-way 4-ohm Coaxial Speakers + NVX SDBSK2 Premium Sound Damping

• 80 watts Peak Each, 40 watts RMS Each
• 0.98" Silk Soft Dome tweeters
• Polypropylene cone material with concave design
• Impedance: 4 ohm
• Sensitivity: 92 dB

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46
List price $118.69
$114.94

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Ships in 10-14 days

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• 80 watts Peak Each, 40 watts RMS Each
• 0.98" Silk Soft Dome tweeters
• Polypropylene cone material with concave design
• Impedance: 4 ohm
• Sensitivity: 92 dB

Crunch CS46CX with Sound Damping

500W Max (250W RMS) 4x6" CS Series 2-Way Coaxial Car Speakers + NVX SDSK2 Sound Damping

CS46CX_SDSK2 big
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Crunch CS46CX with Sound Damping

500W Max (250W RMS) 4x6" CS Series 2-Way Coaxial Car Speakers + NVX SDSK2 Sound Damping

• 250W Max each / 125W RMS each
• Neo Mylar Soft Dome Tweeter
• Impedance: 4 ohm
• Cellulose Cone and Rubber Surround

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57
List price $44.73
-13% $38.98

Available

Ships in 10-14 days

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• 250W Max each / 125W RMS each
• Neo Mylar Soft Dome Tweeter
• Impedance: 4 ohm
• Cellulose Cone and Rubber Surround

JBL GX6428 (JBLGX6428AM with Sound Damping

240W Peak (80W RMS) 4x6" GX Series 2-way 2.3-ohm Coaxial Speakers + NVX SDBSK2 Premium Sound Damping

GX6428AM_SDBSK2 big Out of stock
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JBL GX6428 (JBLGX6428AM with Sound Damping

240W Peak (80W RMS) 4x6" GX Series 2-way 2.3-ohm Coaxial Speakers + NVX SDBSK2 Premium Sound Damping

• 120 watts Peak Each, 40 watts RMS Each
• 1" Edge-driven Polypropylene Soft Dome tweeters
• Polypropylene cone material with Plus One woofer cone architecture
• Impedance: 2.3 ohm
• Sensitivity: 91 dB

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48
List price $118.69
-33% $79.94
Add to Cart

• 120 watts Peak Each, 40 watts RMS Each
• 1" Edge-driven Polypropylene Soft Dome tweeters
• Polypropylene cone material with Plus One woofer cone architecture
• Impedance: 2.3 ohm
• Sensitivity: 91 dB

JBL Club 6422F (SPKCB6422FAM) with Sound Damping

240W Peak (80W RMS) 4x6" Club Series 2-way 3-ohm Coaxial Car Speaker + NVX SDBSK2 Premium Sound Damping

CLUB6422FAM_SDBSK2 big Out of stock
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JBL Club 6422F (SPKCB6422FAM) with Sound Damping

240W Peak (80W RMS) 4x6" Club Series 2-way 3-ohm Coaxial Car Speaker + NVX SDBSK2 Premium Sound Damping

• 120 watts Peak Each, 40 watts RMS Each
• Edge-driven Silk Dome tweeters
• UV-resistant Polypropylene cone material
• Impedance: 3 ohm
• Sensitivity: 92 dB

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49
List price $148.69
-43% $84.98
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• 120 watts Peak Each, 40 watts RMS Each
• Edge-driven Silk Dome tweeters
• UV-resistant Polypropylene cone material
• Impedance: 3 ohm
• Sensitivity: 92 dB

Pioneer TS-A4671F with Sound Damping

420W Peak (60W RMS) 4x6" A-Series 4-way 4-ohm Coaxial Car Speakers + NVX SDBSK2 Premium Sound Damping

TSA4671F_SDBSK2 big Out of stock
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Pioneer TS-A4671F with Sound Damping

420W Peak (60W RMS) 4x6" A-Series 4-way 4-ohm Coaxial Car Speakers + NVX SDBSK2 Premium Sound Damping

• 210 watts Peak Each, 30 watts RMS Each
• Twin 0.43" Polyethylene Terephthalate (PET) Twin Hard Dome tweeters
• Carbon and Mica Reinforced Injection Molded Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB

found car based on your search
Fits your 633CSi
47
List price $128.74
-42% $74.98
Add to Cart

• 210 watts Peak Each, 30 watts RMS Each
• Twin 0.43" Polyethylene Terephthalate (PET) Twin Hard Dome tweeters
• Carbon and Mica Reinforced Injection Molded Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB

 
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    FAQ for Speakers in 1981 633CSi

    Q: Can I upgrade or change the Speakers in 1981 BMW 633CSi?

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

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    Shop your 1981 633CSi
    Why Use a Vehicle Fit Guide?
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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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