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All Infinity Car Speakers for your 1978 Colt close

For consistent, high-quality sound, choose Infinity All Car Speakers.

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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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Infinity Primus 603F (INFSPKPR603C)

300W Peak (100W RMS) 6.5” Primus Series 2 Way Coaxial 3-ohm Speakers

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Infinity Primus 603F (INFSPKPR603C)

300W Peak (100W RMS) 6.5” Primus Series 2 Way Coaxial 3-ohm Speakers

• 150 watts Peak Each, 50 watts RMS Each
• 1/2" Silk Edge Driven Dome tweeters
• Polypropylene cone material
• Impedance: 3 ohm
• Sensitivity: 92 dB

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List price $109.95
-27% $79.95

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Infinity REF407F (INFSPKRF407FUS)

210W Peak (75W RMS) 4" Reference Series 2-Way Coaxial 3-ohm Speakers

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Infinity REF407F (INFSPKRF407FUS)

210W Peak (75W RMS) 4" Reference Series 2-Way Coaxial 3-ohm Speakers

• 105 watts Peak Each, 35 watts RMS Each
• 1/2" Textile Edge Driven Dome Tweeters
• Polypropylene cone material
• Impedance: 3 ohm
• Sensitivity: 92 dB

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List price $139.95
-21% $109.95 /pair

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Infinity Reference 9633IX (REF9633IXAM)

600W Peak (200W RMS) 6x9" Reference Series 3-Way Coaxial 3-ohm Car Speakers

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Infinity Reference 9633IX (REF9633IXAM)

600W Peak (200W RMS) 6x9" Reference Series 3-Way Coaxial 3-ohm Car Speakers

• 300 watts Peak Each, 100 watts RMS Each
• 1" Textile Edge Driven Dome tweeter
• Textile Semi-Dome super tweeter
• Polypropylene cone material
• Impedance: 3 ohm
• Sensitivity: 94 dB

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Install kits available for most vehicles

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List price $199.95
Save $90.00
-45% $109.95 /pair

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Infinity Primus PR9610CS

600W Peak (200W RMS) 6x9" Primus Series 2-Way Component 2.7-ohm Speaker System

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Infinity Primus PR9610CS

600W Peak (200W RMS) 6x9" Primus Series 2-Way Component 2.7-ohm Speaker System

• 300 watts Peak Each, 100 watts RMS Each
• 1" Textile Edge Driven Dome tweeters
• Polypropylene cone material
• Impedance: 2.7 ohm
• Sensitivity: 89 dB

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List price $209.95
-43% $119.95 /set

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Infinity Reference 5032cfx (REF-5032CFXAM)

270W Peak (90W RMS) 5.25" Reference Series 2 Way Coaxial 3-ohm Speakers

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Infinity Reference 5032cfx (REF-5032CFXAM)

270W Peak (90W RMS) 5.25" Reference Series 2 Way Coaxial 3-ohm Speakers

• 135 watts Peak Each, 45 watts RMS Each
• Textile Edge Driven Dome Tweeters
• Polypropylene cone material
• Impedance: 3 ohm
• Sensitivity: 92 dB

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List price $130.00
-42% $74.99 /pair

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Infinity Primus PR5012IS (PR5012ISAM)

240W Peak (80W RMS) 5.25" Primus Series 2 Way Coaxial 2.7-ohm Speakers

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Infinity Primus PR5012IS (PR5012ISAM)

240W Peak (80W RMS) 5.25" Primus Series 2 Way Coaxial 2.7-ohm Speakers

• 120 watts Peak Each, 40 watts RMS Each
• Textile Edge Driven Dome tweeters
• Polypropylene cone material
• Impedance: 2.7 ohm
• Sensitivity: 88 dB

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List price $119.95
-54% $54.95 /pair

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Infinity Kappa 693C (INFSPKKA693CAM) (Open Box, Good)

870W Peak (290W RMS) 6x9" Kappa Series 2 Way Component 3-ohm Speaker System

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Infinity Kappa 693C (INFSPKKA693CAM) (Open Box, Good)

870W Peak (290W RMS) 6x9" Kappa Series 2 Way Component 3-ohm Speaker System

• 435 watts Peak Each, 145 watts RMS Each
• 3/4" Silk Edge Driven Dome Tweeters
• Glass Fiber cone material
• Impedance: 3 ohm
• Sensitivity: 94 dB

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List price $449.95
-7% $419.95 /set

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Infinity Kappa 503CF (INFSPKKA503CFAM) (Open Box, Great)

480W Peak (160W RMS) 5.25” Kappa Series 2 Way 3-ohm Component Speaker System

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Infinity Kappa 503CF (INFSPKKA503CFAM) (Open Box, Great)

480W Peak (160W RMS) 5.25” Kappa Series 2 Way 3-ohm Component Speaker System

• 240 watts Peak Each, 80 watts RMS Each
• 3/4" Silk Edge Driven Dome uni-pivot and angled tweeters
• Glass Fiber cone material
• Impedance: 3 ohm
• Sensitivity: 93 dB

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List price $449.95
-38% $279.30 /set

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Infinity Reference 5030cx (REF5030CX) (Open Box, Great)

390W Max (130W RMS) 5.25" Reference Series 2 Way 3-ohm Component Speaker System

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Infinity Reference 5030cx (REF5030CX) (Open Box, Great)

390W Max (130W RMS) 5.25" Reference Series 2 Way 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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List price $249.95
-44% $139.99 /set

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Infinity Kappa 603CF (INFSPKKA603CFAM) - Open Box, Great

Kappa Series 6.5" Component Speaker System

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Infinity Kappa 603CF (INFSPKKA603CFAM) - Open Box, Great

Kappa Series 6.5" Component Speaker System

• Peak Power: 330W
• RMS Power: 110W
• edge-driven, silk dome tweeter
• Mounting Depth: 2-1/8"
• Plus One+ glass-fiber woofer cone

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List price $499.95
-39% $305.96

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Infinity REF607CF (INFSPKRF607CFUS) (Open Box, Great)

540W Peak (180W RMS) 6.5" Reference Series 2 Way 3-ohm Component Speaker System

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Infinity REF607CF (INFSPKRF607CFUS) (Open Box, Great)

540W Peak (180W RMS) 6.5" Reference Series 2 Way 3-ohm Component Speaker System

• 270 watts Peak Each, 90 watts RMS Each
• 3/4" Textile Edge Driven Dome tweeters
• Polypropylene cone material
• Impedance: 3 ohm
• Sensitivity: 93 dB

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Save up to $21 on install kits for this speaker

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List price $249.95
-25% $186.96 /set

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Infinity REF607FSL (INFSPKRF607FSLUS)

330W Peak (110W RMS) 6.5" Reference Series 2-Way EZFit Coaxial 3-ohm Shallow Speakers

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Infinity REF607FSL (INFSPKRF607FSLUS)

330W Peak (110W RMS) 6.5" Reference Series 2-Way EZFit Coaxial 3-ohm Shallow Speakers

• 165 watts Peak Each, 55 watts RMS Each
• 1" Textile Edge Driven Dome Tweeters
• Polypropylene cone material
• Impedance: 3 ohm
• Sensitivity: 93 dB

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List price $139.95
-21% $109.95 /pair
Add to Cart

• 165 watts Peak Each, 55 watts RMS Each
• 1" Textile Edge Driven Dome Tweeters
• Polypropylene cone material
• Impedance: 3 ohm
• Sensitivity: 93 dB

Limited time!

Infinity Reference REF-4032cfx (REF4032CFXAM)

210W Peak (70W RMS) 4" Reference Series 2 Way Coaxial 3-ohm Speakers

REF4032CFXAM big Out of stock
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Infinity Reference REF-4032cfx (REF4032CFXAM)

210W Peak (70W RMS) 4" Reference Series 2 Way Coaxial 3-ohm Speakers

• 105 watts Peak Each, 35 watts RMS Each
• 1" Textile Balanced Dome tweeters
• Polypropylene cone material
• Impedance: 3 ohm
• Sensitivity: 92 dB

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List price $139.95
-43% $79.99 /pair
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• 105 watts Peak Each, 35 watts RMS Each
• 1" Textile Balanced Dome tweeters
• Polypropylene cone material
• Impedance: 3 ohm
• Sensitivity: 92 dB

Infinity REF607F (INFSPKRF607FUS)

360W Peak (120W RMS) 6.5" Reference Series 2-Way Coaxial 3-ohm Speakers

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Infinity REF607F (INFSPKRF607FUS)

360W Peak (120W RMS) 6.5" Reference Series 2-Way Coaxial 3-ohm Speakers

• 180 watts Peak Each, 60 watts RMS Each
• 1" Textile Edge Driven Dome tweeters
• Polypropylene cone material
• Impedance: 3 ohm
• Sensitivity: 93 dB

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Save up to $21 on install kits for this speaker

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List price $149.95
-20% $119.95 /pair
Notify Me

• 180 watts Peak Each, 60 watts RMS Each
• 1" Textile Edge Driven Dome tweeters
• Polypropylene cone material
• Impedance: 3 ohm
• Sensitivity: 93 dB

Limited time!

Infinity Primus PR693C (INFSPKPR693C)

480W Peak (160W RMS) 6x9” Primus Series 2 Way 3-ohm Component Speaker System

PR693C big Out of stock
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Infinity Primus PR693C (INFSPKPR693C)

480W Peak (160W RMS) 6x9” Primus Series 2 Way 3-ohm Component Speaker System

• 240 watts Peak Each, 80 watts RMS Each
• 3/4" Silk Edge Driven Dome Tweeters
• Polypropylene cone material
• Impedance: 3 ohm
• Sensitivity: 93 dB

Free Speaker Accessory at Checkout!
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VIP Product Get $17.00 in rewards to spend later

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Install kits available for most vehicles

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List price $199.95
-15% $169.95 /set
Add to Cart

• 240 watts Peak Each, 80 watts RMS Each
• 3/4" Silk Edge Driven Dome Tweeters
• Polypropylene cone material
• Impedance: 3 ohm
• Sensitivity: 93 dB

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